[5942] | 1 | /* |
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| 2 | orxonox - the future of 3D-vertical-scrollers |
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| 3 | |
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| 4 | Copyright (C) 2004 orx |
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| 5 | |
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| 6 | This program is free software; you can redistribute it and/or modify |
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| 7 | it under the terms of the GNU General Public License as published by |
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| 8 | the Free Software Foundation; either version 2, or (at your option) |
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| 9 | any later version. |
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| 10 | |
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| 11 | ### File Specific: |
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[6956] | 12 | main-programmer: bottac@ee.ethz.ch |
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[7468] | 13 | |
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| 14 | review: patrick boenzli, patrick@orxonox.ethz.ch |
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[5942] | 15 | */ |
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| 16 | |
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| 17 | #include "height_map.h" |
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| 18 | #include "model.h" |
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[5967] | 19 | #include "texture.h" |
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| 20 | #include "vector.h" |
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[6956] | 21 | #include "material.h" |
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| 22 | #include "p_node.h" |
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| 23 | #include "state.h" |
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[5967] | 24 | #include "debug.h" |
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| 25 | |
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| 26 | // INCLUDING SDL_Image |
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| 27 | #ifdef HAVE_SDL_IMAGE_H |
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| 28 | #include <SDL_image.h> |
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| 29 | #else |
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| 30 | #include <SDL/SDL_image.h> |
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| 31 | #endif |
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| 32 | |
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[7467] | 33 | |
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[7468] | 34 | /** |
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| 35 | * default constructor |
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[7499] | 36 | * @param xOffset |
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[7468] | 37 | */ |
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[7499] | 38 | Tile::Tile(int xOffset, int yOffset, int i2, int j2, HeightMap* heightMapReference ) |
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[5942] | 39 | { |
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[7499] | 40 | PRINTF(0)("Tile Constructor\n"); |
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[7490] | 41 | |
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[7469] | 42 | this->highResModel = new VertexArrayModel(); |
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| 43 | this->lowResModel = new VertexArrayModel(); |
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[6956] | 44 | |
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[7469] | 45 | this->heightMapReference = heightMapReference; |
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| 46 | |
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| 47 | // create high res model |
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[7499] | 48 | this->load(xOffset, yOffset, i2, j2, this->highResModel, 4); |
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[7469] | 49 | // create low res model |
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[7499] | 50 | this->load(xOffset, yOffset, i2, j2, this->lowResModel, 8); |
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[6956] | 51 | } |
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| 52 | |
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[7468] | 53 | |
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[6956] | 54 | Tile::~Tile() |
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| 55 | { |
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[7468] | 56 | if( highResModel) |
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| 57 | delete highResModel; |
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| 58 | if( lowResModel) |
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| 59 | delete lowResModel; |
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[6956] | 60 | } |
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| 61 | |
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[7468] | 62 | |
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[7469] | 63 | /** |
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| 64 | * this darws the tile in diefferent resolutions |
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| 65 | */ |
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[6956] | 66 | void Tile::draw() |
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| 67 | { |
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[7468] | 68 | // draw the tile depending on the distance from the camera with different LOD (level of details) |
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| 69 | float cameraDistance = fabs((State::getCameraNode()->getAbsCoor() - Vector(this->x, heightMapReference->offsetY , this->z) ).len()); |
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| 70 | |
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| 71 | if (cameraDistance < HM_LOD_HIGH_RES ) |
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[7467] | 72 | { |
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[7468] | 73 | this->drawHighRes(); |
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[7467] | 74 | } |
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[7468] | 75 | else if( cameraDistance < HM_LOD_LOW_RES) |
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[7467] | 76 | { |
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| 77 | this->drawLowRes(); |
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| 78 | } |
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[6956] | 79 | } |
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| 80 | |
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| 81 | |
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[7469] | 82 | /** |
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| 83 | * loads a tile |
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| 84 | */ |
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[7499] | 85 | void Tile::load(int xOffset, int yOffset, int i2, int j2, VertexArrayModel* model, int sampleRate) |
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[6956] | 86 | { |
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| 87 | |
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[7469] | 88 | // #define heightMap this->heightMapReference->heightMap |
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[7490] | 89 | #define colors this->heightMapReference->colors |
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[7469] | 90 | #define scaleX this->heightMapReference->scaleX |
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| 91 | #define scaleY this->heightMapReference->scaleY |
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| 92 | #define scaleZ this->heightMapReference->scaleZ |
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| 93 | #define shiftX this->heightMapReference->shiftX |
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| 94 | #define shiftY this->heightMapReference->shiftY |
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| 95 | #define shiftZ this->heightMapReference->shiftZ |
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| 96 | #define normalVectorField this->heightMapReference->normalVectorField |
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[6956] | 97 | |
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[7482] | 98 | |
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[7490] | 99 | //FIXME: OLD implementation |
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[7499] | 100 | this->x = this->heightMapReference->offsetX + ( this->heightMapReference->heightMap->h - ((xOffset + i2) / 2)) * scaleX; |
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| 101 | this->z = this->heightMapReference->offsetZ + ((yOffset + j2 ) / 2 ) * scaleZ; |
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[7490] | 102 | //NEW: |
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[7499] | 103 | this->setAbsCoor(this->heightMapReference->offsetX + ( this->heightMapReference->heightMap->h - ((xOffset + i2) / 2)) * scaleX, |
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[7490] | 104 | 0, |
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[7499] | 105 | this->heightMapReference->offsetZ + ((yOffset + j2 ) / 2 ) * scaleZ); |
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[7014] | 106 | |
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[7490] | 107 | |
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[7467] | 108 | float height = 0; |
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[7014] | 109 | |
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[7467] | 110 | float r = 0.0; |
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| 111 | float g = 0.0; |
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| 112 | float b = 0.0; |
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[7014] | 113 | |
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| 114 | |
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[7490] | 115 | //if( this->heightMapReference->heightMap != NULL && this->heightMapReference->heightMap->format->BitsPerPixel == 8 ) |
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[7014] | 116 | |
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[7469] | 117 | SDL_LockSurface(this->heightMapReference->heightMap); |
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[7490] | 118 | SDL_LockSurface(this->heightMapReference->colorMap); |
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[6956] | 119 | |
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[7499] | 120 | for( int i = xOffset ; i <= i2 ; i +=sampleRate) |
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[7467] | 121 | { |
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| 122 | int w = 0; |
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[6956] | 123 | |
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[7490] | 124 | // adjust the colors acoring to the color map |
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| 125 | if( this->heightMapReference->hasColourMap) |
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[7467] | 126 | { |
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[7492] | 127 | r = colors[3 * w + 2 + 3 * i * this->heightMapReference->heightMap->w]; |
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| 128 | g = colors[3 * w + 1 + 3 * i * this->heightMapReference->heightMap->w]; |
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| 129 | b = colors[3 * w + 0 + 3 * i * this->heightMapReference->heightMap->w]; |
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[7467] | 130 | } |
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[7014] | 131 | |
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[7499] | 132 | w = yOffset; |
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[7491] | 133 | |
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[8068] | 134 | // PRINTF(0)("Values: i = %i, w = %i\n", i, w); |
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[7499] | 135 | |
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[7491] | 136 | // add a vertex to the list |
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[7499] | 137 | model->addVertex(scaleX * (this->heightMapReference->heightMap->h - i) + shiftX, shiftY, scaleZ * w + shiftZ); // Top Right |
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[7491] | 138 | model->addNormal(normalVectorField[i % this->heightMapReference->heightMap->h][w % this->heightMapReference->heightMap->w].y, |
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| 139 | normalVectorField[i % this->heightMapReference->heightMap->h][w % this->heightMapReference->heightMap->w].z, |
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| 140 | normalVectorField[i % this->heightMapReference->heightMap->h][w % this->heightMapReference->heightMap->w].x); |
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[7500] | 141 | model->addTexCoor((float)(yOffset-sampleRate) /(HM_TEX_RATE), (float)(i %this->heightMapReference->heightMap->h)/(HM_TEX_RATE)); |
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[7492] | 142 | model->addColor(r/255.0f, g/255.0f, b/255.0f); |
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[7014] | 143 | |
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| 144 | |
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[7499] | 145 | for(int j = yOffset; j <= j2; j += sampleRate) |
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[7467] | 146 | { |
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[7491] | 147 | // adjust the colors acording to the color map |
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| 148 | if( this->heightMapReference->hasColourMap) |
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[7467] | 149 | { |
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[7492] | 150 | r = colors[3 * j + 2 + 3 * i * this->heightMapReference->heightMap->w]; |
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| 151 | g = colors[3 * j + 1 + 3 * i * this->heightMapReference->heightMap->w]; |
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| 152 | b = colors[3 * j + 0 + 3 * i * this->heightMapReference->heightMap->w]; |
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[7467] | 153 | } |
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[7491] | 154 | height = (float)(unsigned char)this->heightMapReference->heights[j + sampleRate + i * (this->heightMapReference->heightMap->w)]; |
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| 155 | height += (float)(unsigned char)this->heightMapReference->heights[j + 1 + sampleRate + (i + 1) * |
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[7494] | 156 | this->heightMapReference->heightMap->w]; |
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[7491] | 157 | height += (float)(unsigned char)this->heightMapReference->heights[j - 1 + sampleRate + (i + 1) * |
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[7494] | 158 | this->heightMapReference->heightMap->w]; |
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[7491] | 159 | height += (float)(unsigned char)this->heightMapReference->heights[j + sampleRate + (i + 2) * |
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[7494] | 160 | this->heightMapReference->heightMap->w]; |
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[7491] | 161 | height += (float)(unsigned char)this->heightMapReference->heights[j + sampleRate + i * (this->heightMapReference->heightMap->w)]; |
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| 162 | height /= 5.0; |
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[7014] | 163 | |
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[7492] | 164 | model->addVertex(scaleX * (this->heightMapReference->heightMap->h -i) + shiftX , |
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| 165 | ((double)(height)*scaleY) + shiftY , |
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| 166 | scaleZ*(j) + shiftZ); // Top Right |
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| 167 | model->addNormal(normalVectorField[i % this->heightMapReference->heightMap->h][j % this->heightMapReference->heightMap->w].y, |
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| 168 | normalVectorField[i % this->heightMapReference->heightMap->h][j % this->heightMapReference->heightMap->w].z, |
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| 169 | normalVectorField[i % this->heightMapReference->heightMap->h][j % this->heightMapReference->heightMap->w].x); |
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[7500] | 170 | model->addTexCoor((float)(j) /(HM_TEX_RATE), (float)(i %this->heightMapReference->heightMap->h)/(HM_TEX_RATE)); |
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[7492] | 171 | model->addColor(r/255.0f, g/255.0f, b/255.0f); |
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[7469] | 172 | //PRINTF(0)("TexCoord: %f %f \n",(float)j / 100.0, (float)(i %this->heightMapReference->h)/100.0); |
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[7014] | 173 | |
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[7467] | 174 | w = j; |
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| 175 | } |
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[7469] | 176 | model->addVertex(scaleX*(this->heightMapReference->heightMap->h -i)+ shiftX,shiftY,scaleZ*(w)+ shiftZ); // Top Right |
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[7494] | 177 | model->addNormal(normalVectorField[i % this->heightMapReference->heightMap->h][w % this->heightMapReference->heightMap->w].y, |
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| 178 | normalVectorField[i % this->heightMapReference->heightMap->h][w % this->heightMapReference->heightMap->w].z, |
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| 179 | normalVectorField[i% this->heightMapReference->heightMap->h][w % this->heightMapReference->heightMap->w].x); |
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[7500] | 180 | model->addTexCoor((float)(j2+sampleRate) /(HM_TEX_RATE), (float)(i %this->heightMapReference->heightMap->h)/(HM_TEX_RATE)); |
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[7494] | 181 | model->addColor(r/255.0f, g/255.0f, b/255.0f); |
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[7467] | 182 | } |
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[7014] | 183 | |
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[7469] | 184 | SDL_UnlockSurface(this->heightMapReference->heightMap); |
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[7467] | 185 | int cnt = 0; |
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[7492] | 186 | |
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[7499] | 187 | for( int i = xOffset; i < i2; i +=sampleRate) |
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[7467] | 188 | { |
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[7499] | 189 | for( int j = yOffset-sampleRate; j < j2 + 2 * sampleRate; j += sampleRate) |
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[7467] | 190 | { |
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| 191 | model->addIndice(cnt); |
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[7499] | 192 | model->addIndice(cnt + (j2 -yOffset + 3* sampleRate )/ sampleRate ); |
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[7467] | 193 | cnt++; |
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| 194 | } |
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| 195 | model->newStripe(); |
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| 196 | } |
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[7499] | 197 | cnt += (j2 -yOffset + 3* sampleRate)/ sampleRate; |
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[7014] | 198 | |
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[7499] | 199 | for( int j = yOffset; j <= j2; j += sampleRate) |
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[7467] | 200 | { |
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[7499] | 201 | int i = xOffset; |
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[7014] | 202 | |
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[7467] | 203 | // To be fixed |
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[7469] | 204 | if(this->heightMapReference->hasColourMap) |
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[7467] | 205 | { |
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[7492] | 206 | r = (float)colors[3 * j + 2 + 3 * i * this->heightMapReference->heightMap->w]; |
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| 207 | g = (float)colors[3 * j + 1 + 3 * i * this->heightMapReference->heightMap->w]; |
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| 208 | b = (float)colors[3 * j + 0 + 3 * i * this->heightMapReference->heightMap->w]; |
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[7467] | 209 | } |
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[7014] | 210 | |
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[7492] | 211 | model->addVertex(scaleX*(this->heightMapReference->heightMap->h -i) + shiftX , |
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| 212 | shiftY , |
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| 213 | scaleZ*(j) + shiftZ); // Top Right |
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| 214 | model->addNormal(normalVectorField[i % this->heightMapReference->heightMap->h][j % this->heightMapReference->heightMap->w].y, |
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| 215 | normalVectorField[i % this->heightMapReference->heightMap->h][j % this->heightMapReference->heightMap->w].z, |
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| 216 | normalVectorField[i % this->heightMapReference->heightMap->h][j % this->heightMapReference->heightMap->w].x); |
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[7500] | 217 | model->addTexCoor((float)j /(HM_TEX_RATE), (float)((i - sampleRate) %this->heightMapReference->heightMap->h)/(HM_TEX_RATE)); |
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[7492] | 218 | model->addColor(r/255.0f, g/255.0f, b/255.0f); |
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[7467] | 219 | } |
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[7014] | 220 | |
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[7494] | 221 | |
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[7499] | 222 | for(int j = yOffset ; j <= j2 ; j += sampleRate) |
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[7467] | 223 | { |
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[7499] | 224 | int i = xOffset; |
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[7494] | 225 | height = (float)(unsigned char)this->heightMapReference->heights[j + sampleRate + i * this->heightMapReference->heightMap->w]; |
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| 226 | height += (float)(unsigned char)this->heightMapReference->heights[j + 1 + sampleRate + (i + 1) * |
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| 227 | this->heightMapReference->heightMap->w]; |
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| 228 | height += (float)(unsigned char)this->heightMapReference->heights[j - 1 + sampleRate + (i + 1) * |
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| 229 | this->heightMapReference->heightMap->w]; |
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| 230 | height += (float)(unsigned char)this->heightMapReference->heights[j + sampleRate + (i + 2) * |
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| 231 | this->heightMapReference->heightMap->w]; |
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| 232 | height += (float)(unsigned char)this->heightMapReference->heights[j + sampleRate + i * this->heightMapReference->heightMap->w]; |
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[7467] | 233 | height=height/5.0; |
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[7014] | 234 | |
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[7494] | 235 | model->addVertex(scaleX*(this->heightMapReference->heightMap->h -i) + shiftX , |
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| 236 | ((double)(height)*scaleY) +shiftY , |
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| 237 | scaleZ*(j) + shiftZ); // Top Right |
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| 238 | model->addNormal(normalVectorField[i % this->heightMapReference->heightMap->h][j % this->heightMapReference->heightMap->w].y, |
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| 239 | normalVectorField[i % this->heightMapReference->heightMap->h][j% this->heightMapReference->heightMap->w].z, |
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| 240 | normalVectorField[i%this->heightMapReference->heightMap->h][j%this->heightMapReference->heightMap->w].x); |
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[7500] | 241 | model->addTexCoor((float)j /(HM_TEX_RATE), (float)(i %this->heightMapReference->heightMap->h)/(HM_TEX_RATE)); |
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[7494] | 242 | model->addColor(r/255.0f, g/255.0f, b/255.0f); |
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[7467] | 243 | } |
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[7014] | 244 | |
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| 245 | |
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[7499] | 246 | for(int j = yOffset; j <= j2; j += sampleRate) |
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[7467] | 247 | { |
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| 248 | int i = i2; |
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| 249 | // To be fixed |
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[7494] | 250 | if( this->heightMapReference->hasColourMap) |
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[7467] | 251 | { |
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[7494] | 252 | r = (float)colors[3 * j + 2 + 3 * i * this->heightMapReference->heightMap->w]; |
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| 253 | g = (float)colors[3 * j + 1 + 3 * i * this->heightMapReference->heightMap->w]; |
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| 254 | b = (float)colors[3 * j + 0 + 3 * i * this->heightMapReference->heightMap->w]; |
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[7467] | 255 | } |
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[7014] | 256 | |
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[7494] | 257 | model->addVertex(scaleX*(this->heightMapReference->heightMap->h -i) + shiftX , |
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| 258 | shiftY , |
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| 259 | scaleZ*(j) + shiftZ); // Top Right |
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| 260 | model->addNormal(normalVectorField[i%this->heightMapReference->heightMap->h][j%this->heightMapReference->heightMap->w].y, |
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| 261 | normalVectorField[i%this->heightMapReference->heightMap->h][j%this->heightMapReference->heightMap->w].z, |
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| 262 | normalVectorField[i%this->heightMapReference->heightMap->h][j%this->heightMapReference->heightMap->w].x); |
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[7500] | 263 | model->addTexCoor((float)j /(HM_TEX_RATE), (float)((i+ sampleRate) %this->heightMapReference->heightMap->h)/(HM_TEX_RATE)); |
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[7494] | 264 | model->addColor(r/255.0f, g/255.0f, b/255.0f); |
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[7467] | 265 | } |
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[7014] | 266 | |
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| 267 | |
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[7499] | 268 | for(int j = yOffset; j <= j2; j += sampleRate) |
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[7467] | 269 | { |
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| 270 | int i = i2; |
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[7494] | 271 | height = (float)(unsigned char)this->heightMapReference->heights[j + sampleRate + i * this->heightMapReference->heightMap->w]; |
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| 272 | height += (float)(unsigned char)this->heightMapReference->heights[j + 1 + sampleRate + (i + 1) |
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| 273 | * this->heightMapReference->heightMap->w]; |
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[7496] | 274 | height += (float)(unsigned char)this->heightMapReference->heights[j - 1 + sampleRate + (i + 1) * |
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| 275 | this->heightMapReference->heightMap->w]; |
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| 276 | height += (float)(unsigned char)this->heightMapReference->heights[j + sampleRate + (i + 2) * |
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| 277 | this->heightMapReference->heightMap->w]; |
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| 278 | height += (float)(unsigned char)this->heightMapReference->heights[j + sampleRate + i * this->heightMapReference->heightMap->w]; |
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| 279 | height /= 5.0; |
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| 280 | model->addVertex(scaleX*(this->heightMapReference->heightMap->h -i) + shiftX , |
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| 281 | ((double)(height)*scaleY) +shiftY , |
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| 282 | scaleZ*(j) + shiftZ); // Top Right |
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| 283 | model->addNormal(normalVectorField[i%this->heightMapReference->heightMap->h][j%this->heightMapReference->heightMap->w].y, |
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| 284 | normalVectorField[i%this->heightMapReference->heightMap->h][j%this->heightMapReference->heightMap->w].z, |
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| 285 | normalVectorField[i%this->heightMapReference->heightMap->h][j%this->heightMapReference->heightMap->w].x); |
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[7500] | 286 | model->addTexCoor((float)j /(HM_TEX_RATE), (float)(i %this->heightMapReference->heightMap->h)/(HM_TEX_RATE)); |
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[7496] | 287 | model->addColor(r/255.0f, g/255.0f, b/255.0f); |
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[7467] | 288 | } |
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[7014] | 289 | |
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[7467] | 290 | // link Boarder Stripe |
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[7499] | 291 | for(int j = yOffset - sampleRate; j < j2; j += sampleRate) |
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[7467] | 292 | { |
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| 293 | model->addIndice(cnt); |
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[7499] | 294 | model->addIndice(cnt + (j2 - yOffset + sampleRate) / sampleRate ); |
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[7467] | 295 | cnt++; |
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| 296 | } |
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| 297 | cnt++; |
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[7014] | 298 | |
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[7496] | 299 | |
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[7467] | 300 | model->newStripe(); |
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[7014] | 301 | |
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| 302 | |
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[7499] | 303 | cnt += (j2-yOffset)/ sampleRate; |
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[7467] | 304 | // link 2nd BoarderStripe |
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[7499] | 305 | for(int j = yOffset-sampleRate; j < j2; j += sampleRate) |
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[7467] | 306 | { |
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| 307 | model->addIndice(cnt); |
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[7499] | 308 | model->addIndice(cnt + (j2 - yOffset + sampleRate) / sampleRate); |
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[7467] | 309 | cnt++; |
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| 310 | } |
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[7014] | 311 | |
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[7490] | 312 | SDL_UnlockSurface(this->heightMapReference->colorMap); |
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[7014] | 313 | |
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[7467] | 314 | model->finalize(); |
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[7014] | 315 | |
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[7469] | 316 | // #undef heightMap |
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[7490] | 317 | #undef colors |
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[7014] | 318 | #undef scaleX |
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| 319 | #undef scaleY |
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| 320 | #undef scaleZ |
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| 321 | #undef shiftX |
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| 322 | #undef shiftY |
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| 323 | #undef shiftZ |
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| 324 | #undef normalVectorField |
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[5942] | 325 | } |
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| 326 | |
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[7469] | 327 | |
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[9869] | 328 | ObjectListDefinition(HeightMap); |
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[6956] | 329 | |
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[7469] | 330 | |
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[7498] | 331 | /** |
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| 332 | * constructor |
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| 333 | * @param heightMapName file name of the height map |
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| 334 | */ |
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[7497] | 335 | HeightMap::HeightMap(const std::string& heightMapName) |
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[7467] | 336 | : VertexArrayModel() |
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[6956] | 337 | { |
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[7497] | 338 | this->init(heightMapName); |
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[6956] | 339 | |
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[7497] | 340 | this->colorMap = NULL; |
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[6956] | 341 | } |
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| 342 | |
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[7498] | 343 | |
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| 344 | /** |
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| 345 | * constructor |
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| 346 | * @param heightMapName file name of the height map |
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| 347 | * @param colorMapName file name of the color map |
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| 348 | */ |
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[7497] | 349 | HeightMap::HeightMap(const std::string& heightMapName, const std::string& colorMapName) |
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[7467] | 350 | : VertexArrayModel() |
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[6956] | 351 | { |
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[7497] | 352 | this->init(heightMapName); |
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[6956] | 353 | |
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[7497] | 354 | this->colorMap = IMG_Load(colorMapName.c_str()); |
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| 355 | if( this->colorMap != NULL) |
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[6956] | 356 | { |
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[7497] | 357 | PRINTF(0)("loading Image %s\n", colorMapName.c_str()); |
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| 358 | PRINTF(0)("width : %i\n", this->colorMap->w); |
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| 359 | PRINTF(0)("height : %i\n", this->colorMap->h); |
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| 360 | PRINTF(0)("%i Byte(s) per Pixel \n", this->colorMap->format->BytesPerPixel); |
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| 361 | PRINTF(0)("Rshift : %i\n", this->colorMap->format->Rshift); |
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| 362 | PRINTF(0)("Bshift: %i\n", this->colorMap->format->Bshift); |
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| 363 | PRINTF(0)("Gshift: %i\n", this->colorMap->format->Gshift); |
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| 364 | PRINTF(0)("Rmask: %i\n", this->colorMap->format->Rmask); |
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| 365 | PRINTF(0)("Gmask: %i\n", this->colorMap->format->Gmask); |
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[7498] | 366 | |
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| 367 | this->colors = (unsigned char *) colorMap->pixels; |
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| 368 | this->hasColourMap = true; |
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[6956] | 369 | } |
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[7467] | 370 | else |
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[7498] | 371 | { |
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[7467] | 372 | PRINTF(0)("oops! couldn't load colorMap for some reason.\n"); |
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[7498] | 373 | this->hasColourMap = false; |
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[6956] | 374 | } |
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[5967] | 375 | } |
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| 376 | |
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| 377 | |
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[7498] | 378 | /** |
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| 379 | * deconstructor |
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| 380 | */ |
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[5967] | 381 | HeightMap::~HeightMap() |
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| 382 | { |
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[7526] | 383 | if( heightMap) |
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| 384 | delete heightMap; |
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| 385 | if( colorMap) |
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| 386 | delete colorMap; |
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[6956] | 387 | |
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[7526] | 388 | if( this->tiles) |
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[7467] | 389 | { |
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[7526] | 390 | for( int i = 0; i < heightMap->h / HM_TILE_SIZE; i++) { |
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| 391 | for( int j = 0; j < heightMap->w / HM_TILE_SIZE; j++) { |
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| 392 | delete tiles [i][j]; |
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| 393 | } |
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[7467] | 394 | } |
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[7526] | 395 | |
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| 396 | for( int i = 0; i < heightMap->h / HM_TILE_SIZE; i++) |
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| 397 | delete[] tiles[i]; |
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| 398 | delete[] tiles; |
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[7467] | 399 | } |
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[6956] | 400 | |
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[7526] | 401 | if( this->normalVectorField) |
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| 402 | { |
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| 403 | for(int i = 0; i < heightMap->h; i++) |
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| 404 | delete[] normalVectorField[i]; |
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| 405 | delete[] normalVectorField; |
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| 406 | } |
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[7497] | 407 | } |
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[6956] | 408 | |
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| 409 | |
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[7526] | 410 | /** |
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| 411 | * this is the init function with stuff shared between all constructors |
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| 412 | */ |
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[7497] | 413 | void HeightMap::init(const std::string& heightMapName) |
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| 414 | { |
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[9869] | 415 | this->registerObject(this, HeightMap::_objectList); |
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[6956] | 416 | |
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[7497] | 417 | this->shiftX = 0; |
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| 418 | this->shiftY = 0; |
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| 419 | this->shiftZ = 0; |
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[7014] | 420 | |
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[7497] | 421 | heightMap = IMG_Load(heightMapName.c_str()); |
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| 422 | if( heightMap != NULL) |
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| 423 | { |
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| 424 | /* |
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| 425 | WHAT about following checks: |
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| 426 | - image size (rectangular?) |
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| 427 | - image file type (bw?) |
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| 428 | */ |
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| 429 | PRINTF(1)("loading Image %s\n", heightMapName.c_str()); |
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| 430 | PRINTF(1)("width : %i\n", heightMap->w); |
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| 431 | PRINTF(1)("height : %i\n", heightMap->h); |
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| 432 | PRINTF(1)("%i Byte(s) per Pixel \n", heightMap->format->BytesPerPixel); |
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| 433 | PRINTF(1)("Rshift : %i\n", heightMap->format->Rshift); |
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| 434 | PRINTF(1)("Bshift: %i\n", heightMap->format->Bshift); |
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| 435 | PRINTF(1)("Gshift: %i\n", heightMap->format->Gshift); |
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| 436 | PRINTF(1)("Rmask: %i\n", heightMap->format->Rmask); |
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| 437 | PRINTF(1)("Gmask: %i\n", heightMap->format->Gmask); |
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| 438 | } |
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| 439 | else |
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| 440 | PRINTF(1)("oops! couldn't load %s for some reason.\n", heightMapName.c_str()); |
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[7014] | 441 | |
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[7526] | 442 | this->generateNormalVectorField(); |
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[7498] | 443 | |
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| 444 | this->heights = (unsigned char*)heightMap->pixels; |
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[5967] | 445 | } |
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| 446 | |
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[7497] | 447 | |
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[7498] | 448 | /** |
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| 449 | * this function loads the heightmap by creatin tiles |
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| 450 | */ |
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[5942] | 451 | void HeightMap::load() |
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| 452 | { |
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[7499] | 453 | // create a dynamicly sized 2D-array for tiles |
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[7500] | 454 | this->tiles = new Tile**[this->heightMap->h / HM_TILE_SIZE]; |
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[5967] | 455 | |
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[7500] | 456 | for( int i = 0;i < heightMap->h / HM_TILE_SIZE; i++) |
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| 457 | this->tiles [i]= new Tile*[this->heightMap->w / HM_TILE_SIZE]; |
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[7014] | 458 | |
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[7499] | 459 | // setup arrays |
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[7500] | 460 | for( int i = 0; i < this->heightMap->h / HM_TILE_SIZE; i++) { |
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| 461 | for( int j = 0; j < this->heightMap->w / HM_TILE_SIZE; j++) { |
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| 462 | this->tiles[i][j] = new Tile( i * HM_TILE_SIZE , j * HM_TILE_SIZE , (i+1) * HM_TILE_SIZE, (j+1) * HM_TILE_SIZE , this); |
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[7467] | 463 | } |
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| 464 | } |
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[6956] | 465 | } |
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[5993] | 466 | |
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| 467 | |
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[7498] | 468 | /** |
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| 469 | * this function draws the height map |
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| 470 | */ |
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| 471 | void HeightMap::draw() const |
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[6956] | 472 | { |
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[7526] | 473 | Vector v = State::getCameraNode()->getAbsCoor(); |
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[6956] | 474 | |
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[7500] | 475 | int i_max = (heightMap->h )/ HM_TILE_SIZE; |
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| 476 | int j_max= (heightMap->w ) / HM_TILE_SIZE; |
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[6956] | 477 | |
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| 478 | |
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| 479 | |
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[7526] | 480 | /* process the draw command to the tiles, FIXME: think of something more efficient*/ |
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| 481 | for( int i = 0; i < i_max; i++) { |
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| 482 | for( int j = 0; j < j_max; j++) { |
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[7467] | 483 | tiles[i][j]->draw(); |
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| 484 | } |
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| 485 | } |
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[7498] | 486 | } |
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[5980] | 487 | |
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[7498] | 488 | |
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| 489 | /** |
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| 490 | * this function generates the normal vector field |
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| 491 | */ |
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[6956] | 492 | void HeightMap::generateNormalVectorField() |
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| 493 | { |
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[7467] | 494 | int delta = 1; |
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| 495 | heights = (unsigned char*) heightMap->pixels; |
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[6956] | 496 | |
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[7467] | 497 | //Create a Dynamicly sized 2D-Array to store our normals |
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| 498 | normalVectorField = new Vector* [heightMap->h]; |
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| 499 | for(int i=0;i<heightMap->h;i++) |
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| 500 | normalVectorField [i]= new (Vector [heightMap->w]); |
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[6956] | 501 | |
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[7467] | 502 | // Initialize |
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| 503 | for(int i=0; i< heightMap->h; i++) |
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| 504 | { |
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| 505 | for(int j = 0; j> heightMap->w; j++) |
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| 506 | { |
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| 507 | Vector v = Vector(0.0, 1.0, 0.0); |
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| 508 | normalVectorField[i][j] = v; |
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| 509 | } |
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| 510 | } |
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[5967] | 511 | |
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[7467] | 512 | // !!! Does not yet calculate the normals of some border points!!!!! |
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[5990] | 513 | |
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[7467] | 514 | if(heightMap != NULL && heightMap->format->BitsPerPixel == 8 ) |
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| 515 | { |
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| 516 | SDL_LockSurface(heightMap); |
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| 517 | for(int i = 0 ; i < heightMap->h - 1 ; i ++) |
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| 518 | { |
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| 519 | for(int j = 0; j < heightMap->w - 1 ; j ++) |
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| 520 | { |
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[5942] | 521 | |
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| 522 | |
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[7467] | 523 | delta = (int)heights[j + (i+1)*(heightMap->w )] - (int) heights[j + i*(heightMap->w )]; |
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| 524 | Vector a = Vector(-scaleX,(float)delta*scaleY ,0.0f); |
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[5942] | 525 | |
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[7467] | 526 | delta = (int)heights[j+1 + i*(heightMap->w )] - (int)heights[j + i*(heightMap->w )]; |
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| 527 | Vector b = Vector(0.0f,(float) delta*scaleY ,scaleZ); |
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[5942] | 528 | |
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[6956] | 529 | |
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[7467] | 530 | normalVectorField[i][j] = b.cross(a); |
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| 531 | normalVectorField[i][j].normalize(); |
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[5942] | 532 | |
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[7467] | 533 | } |
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| 534 | } |
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| 535 | SDL_UnlockSurface(heightMap); |
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[7014] | 536 | |
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[7467] | 537 | } |
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[5942] | 538 | } |
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[6956] | 539 | |
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| 540 | |
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[7498] | 541 | /** |
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| 542 | * scales the height map about a vector |
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| 543 | * @param v scaling vector |
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| 544 | */ |
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[6956] | 545 | void HeightMap::scale(Vector v) |
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| 546 | { |
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[7467] | 547 | scaleX = v.x; |
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| 548 | scaleY = v.y; |
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| 549 | scaleZ = v.z; |
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| 550 | generateNormalVectorField(); |
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[6956] | 551 | } |
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| 552 | |
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[7498] | 553 | |
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| 554 | /** |
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| 555 | * sets the absolute coordinates of the height map |
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| 556 | * @param v the moving vector |
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| 557 | */ |
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[6956] | 558 | void HeightMap::setAbsCoor(Vector v) |
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| 559 | { |
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[7467] | 560 | offsetX = v.x; |
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| 561 | offsetY = v.y; |
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[7498] | 562 | offsetZ = v.z; |
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[6956] | 563 | } |
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| 564 | |
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| 565 | |
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[7498] | 566 | /** |
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| 567 | * returns the height at a given 2D coordinate |
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| 568 | * @param x x coordinate of the height map (world space) |
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| 569 | * @param y y coordinate of the height map (world space) |
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| 570 | * @return the height (z) |
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| 571 | */ |
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[7014] | 572 | float HeightMap::getHeight(float x, float y) |
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[6956] | 573 | { |
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[7467] | 574 | x -= offsetX; |
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| 575 | y -= offsetZ; |
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[7014] | 576 | |
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[7497] | 577 | int xInt = (int)( x / scaleX); |
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[7467] | 578 | x -= (float)((int)x); |
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| 579 | xInt = heightMap->h - xInt; |
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[7497] | 580 | int yInt = (int)( y / scaleZ); |
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[7467] | 581 | y -= (float) ((int) y); /*yInt = heightMap->w - yInt;*/ |
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[7014] | 582 | |
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[7467] | 583 | //PRINTF(0)("xInt: %i, yInt: %i, x: %f, y: %f\n", xInt, yInt, x, y); |
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[7014] | 584 | |
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[7467] | 585 | if(xInt <= 0 || xInt >= heightMap->h || yInt <= 0 || yInt >= heightMap->w ) |
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| 586 | return 0; |
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| 587 | if( y >= 0.5*x) |
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| 588 | { |
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| 589 | // Check for ... |
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| 590 | } |
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[6956] | 591 | |
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[7467] | 592 | float height = heights[yInt + (xInt)*heightMap->w]*scaleY; |
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[7014] | 593 | |
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[7467] | 594 | float a = normalVectorField[(xInt)][yInt].x; |
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| 595 | float b = normalVectorField [(xInt)][yInt].z; |
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| 596 | float c = normalVectorField [(xInt)][yInt].y; |
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[7014] | 597 | |
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[8068] | 598 | // PRINTF(0)("a: %f \n" ,a); |
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| 599 | // PRINTF(0)("b: %f \n" ,b); |
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| 600 | // PRINTF(0)("c: %f \n" ,c); |
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[7014] | 601 | |
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[7954] | 602 | |
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[7467] | 603 | height -= ( (a/c)*(x) + (b/c)*(y)); |
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[7014] | 604 | |
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[7954] | 605 | // PRINTF(0)("height: %f \n" ,height ); |
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[7467] | 606 | return (height + offsetZ); |
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[7954] | 607 | |
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[6956] | 608 | } |
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