Changeset 8255 in orxonox.OLD for trunk/src/lib/graphics/effects/cloud_effect.cc

Timestamp:

Jun 8, 2006, 3:44:12 PM (18 years ago)

Author:

bensch

Message:

merged the atmos back with command: ​https://svn.orxonox.net/orxonox/branches/atmospheric_engine

File:

• trunk/src/lib/graphics/effects/cloud_effect.cc (modified) (6 diffs)

trunk/src/lib/graphics/effects/cloud_effect.cc

@@ -11 +11 @@
 ### File Specific:
         main-programmer: hdavid, amaechler
+
+        INSPIRED BY http://www.codesampler.com/usersrc/usersrc_6.htm#oglu_sky_dome_shader
 */
 
@@ -17 +19 @@
 #include "util/loading/load_param.h"
 #include "util/loading/factory.h"
+#include "util/loading/resource_manager.h"
 
 #include "glincl.h"
-//#include "graphics_engine.h"
+#include "material.h"
 #include <math.h>
+#include "state.h"
+#include "p_node.h"
+#include "shader.h"
+#include "shell_command.h"
 
 #include "parser/tinyxml/tinyxml.h"
 
+#include "sglmodel.h"
+
 using namespace std;
+
+SHELL_COMMAND(activate, CloudEffect, activateCloud);
+SHELL_COMMAND(deactivate, CloudEffect, deactivateCloud);
 
 CREATE_FACTORY(CloudEffect, CL_CLOUD_EFFECT);
@@ -37 +49 @@
                 this->loadParams(root);
 
-        this->activate();
+        if(cloudActivate)
+                this->activate();
 }
 
@@ -43 +56 @@
 {
         this->deactivate();
-}
+
+        delete this->cloudMaterial;
+
+        cloudModel.Delete();
+        Shader::unload(this->cloudShader);
+
+}
+
+
+bool CloudEffect::init()
+{
+        PRINTF(1)("Initializing CloudEffect\n");
+
+        // Default values
+        this->cloudActivate = false;
+        this->cloudTint[4] = ( 0.9f, 0.7f, 0.7f, 1.0f );
+        this->cloudScroll = 1.0f;
+        this->time = 0.0f;
+        //g_cloud_texture = 0;
+
+        this->cloudTexture = "pictures/sky/cloud1.jpg";
+
+        cloudModel.Load("sky.sgl");
+        cloudModel.Unitize();
+
+        // Get the bounding box of the sky dome
+        float bbox[3] = {0};
+        cloudModel.GetDimensions(bbox[0], bbox[1], bbox[2]);
+        
+        // Load Shaders
+        this->cloudShader = new Shader( ResourceManager::getInstance()->getDataDir() + "/shaders/sky.vert", ResourceManager::getInstance()->getDataDir() +"/shaders/sky.frag");
+
+        // Tell the shader the bounding box of the sky dome
+        this->cloudShader->bindShader("bbox", bbox, 4);
+
+        // Initialze Cloud Material
+        this->cloudMaterial = new Material("Sky");
+        this->cloudMaterial->setIllum(3);
+        this->cloudMaterial->setAmbient(1.0, 1.0, 1.0);
+        this->cloudMaterial->setDiffuseMap(this->cloudTexture);
+
+}
+
 
 void CloudEffect::loadParams(const TiXmlElement* root)
@@ -49 +104 @@
         WeatherEffect::loadParams(root);
 
-        LoadParam(root, "animSpeed", this, CloudEffect, setCloudAnimation);
-
-}
-
-
-bool CloudEffect::init()
-{
-        // default values
-        this->cloudAnimTimeStep = 0;
-
-        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
-        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
-
-        // Generate noise map a
-        CloudEffect::genNoiseMap(cloudMap32_a);
-        
-        if (this->cloudAnimTimeStep > 0) {
-                // Generate noise map b
-                CloudEffect::genNoiseMap(cloudMap32_b);
+        // LoadParam(root, "speed", this, CloudEffect, setCloudAnimation);
+        // LoadParam(root, "texture", this, CloudEffect, setCloudTexture);
+
+        LOAD_PARAM_START_CYCLE(root, element);
+        {
+                LoadParam_CYCLE(element, "option", this, CloudEffect, setCloudOption);
         }
-}
+        LOAD_PARAM_END_CYCLE(element);
+}
+
 
 bool CloudEffect::activate()
 {
-        PRINTF(0)( "Activating CloudEffect\n");
-        if (this->cloudAnimTimeStep == 0) {
-                for (int i = 0; i < 32*32; i++)
-                        cloudMap32_c[i] = cloudMap32_a[i];
-
-                CloudEffect::overlapOctaves();
-                CloudEffect::expFilter();
-                CloudEffect::genCloudTexture();
-        }
+        PRINTF(0)( "Activating CloudEffect with Material %s\n", this->cloudTexture.c_str());
+
+        this->cloudActivate = true;
+        
 }
 
@@ -89 +126 @@
 {
         PRINTF(0)("Deactivating CloudEffect\n");
-}
-
-void CloudEffect::genCloudTexture() {
-        for(int i=0; i<256; i++)
-                for(int j=0; j<256; j++) 
-                {
-                        float color = cloudMap256[i*256+j]; 
-                        cloudTexture[i][j][0] = (char) color;
-                        cloudTexture[i][j][1] = (char) color;
-                        cloudTexture[i][j][2] = (char) color;
-                }
-
-        glGenTextures(2, &texID[0]);
-        glBindTexture(GL_TEXTURE_2D, texID[0]);
-        gluBuild2DMipmaps(GL_TEXTURE_2D, GL_RGB, 256, 256, GL_RGB, GL_UNSIGNED_BYTE, cloudTexture);
-}
-
-void CloudEffect::calcAnimMap(float timer) {
-
-        for (int x=0; x<32*32; x++)
-                cloudMap32_c[x] = (cloudMap32_a[x] * ((this->cloudAnimTimeStep - timer) / this->cloudAnimTimeStep)) + (cloudMap32_b[x] * (timer / this->cloudAnimTimeStep));
-
+
+        this->cloudActivate = false;
 }
 
 void CloudEffect::draw() const
 {
-        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
+        if (!this->cloudActivate)
+                return;
+                
+        //      glMatrixMode(GL_MODELVIEW);
+        //      glPushMatrix();
+        //
+        //      // Move sphere along with the camera
+        //      Vector r = State::getCameraNode()->getAbsCoor();
+        //      glTranslatef(r.x, r.y, r.z);
+        //
+        //      // Sky movement
+        //      glRotatef(mover, 0, 0, 1);
+        //
+        //      cloudMaterial->select();
+        //      gluSphere(this->sphereObj, this->sphereRadius, 20, 20);
+        //      glPopMatrix();
+
+        // ******
+
+        glMatrixMode(GL_MODELVIEW);
         glPushMatrix();
-        glEnable(GL_TEXTURE_2D);
-
-        glBindTexture(GL_TEXTURE_2D, texID[0]);
-
-        // FIXME : Bind this to the sky - how do I do this?
-        glBegin(GL_QUADS);
-                glTexCoord2f(0.0f, 0.0f); glVertex3f(20, 20,  60);      // Bottom Left Of The Texture and Quad
-                glTexCoord2f(1.0f, 0.0f); glVertex3f(60, 20,  60);      // Bottom Right Of The Texture and Quad
-                glTexCoord2f(1.0f, 1.0f); glVertex3f(60, 60,  60);      // Top Right Of The Texture and Quad
-                glTexCoord2f(0.0f, 1.0f); glVertex3f(20, 60,  60);      // Top Left Of The Texture and Quad
-        glEnd(); 
+
+        // glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
+        // glShadeModel(GL_SMOOTH);
+        // glEnable(GL_DEPTH_TEST);
+        // glEnable(GL_CULL_FACE);
+        // glCullFace(GL_BACK);
+        // glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
+        
+        // glLineWidth(3.0f);
+
+        static float time = 0.0f;
+        // static vector3f eye = {0.0f, 0.0f, 0.0f}, look = {0.0f, 0.0f, 1.0f}, up = {0.0f, 1.0f, 0.0f};
+
+        // glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+        // glLoadIdentity();
+        // gluLookAt(eye[x], eye[y], eye[z], look[x], look[y], look[z], up[x], up[y], up[z]);
+
+        // Turn off the depth buffer when rendering the background
+        // glDisable(GL_DEPTH_TEST);
+
+        this->cloudShader->activateShader();
+
+        /* Select the shader program and update parameters. */
+        /* The "time" parameter controls the cloud scrolling. */
+        this->cloudShader->bindShader("time", &time, 1);
+        /* The "horizon" parameter controls the sky tinting. */
+        this->cloudShader->bindShader("horizon", cloudTint, 4);
+
+        glActiveTexture(GL_TEXTURE0 + 0);
+        glActiveTexture(GL_TEXTURE0 + 1);
+
+        // Load the cloud texture
+        //glBindTexture(GL_TEXTURE_2D, g_cloud_texture);
+        this->cloudMaterial->select();
+
+        // Render the sky dome
+        cloudModel.Render();
+
+        // Unselect the shader
+        Shader::deactivateShader();
+
+        /* Turn on the depth buffer when rendering the foreground. */
+        // glEnable(GL_DEPTH_TEST);
+
+        /* Render the forground, for example, a teapot or bunny. */
+        //    glEnable(GL_LIGHTING);
+        //    glColor3f(0.0f, 1.0f, 0.0f);
+        //    glBegin(GL_QUADS);
+        //    glNormal3f( 0.0f,  1.0f,  0.0f);
+        //    glVertex3f( 20.0f, -1.0f,  20.0f);
+        //    glVertex3f( 20.0f, -1.0f, -20.0f);
+        //    glVertex3f(-20.0f, -1.0f, -20.0f);
+        //    glVertex3f(-20.0f, -1.0f,  20.0f);
+        //    glEnd();
+        //    glDisable(GL_LIGHTING);
 
         glPopMatrix();
+        
 }
 
 void CloudEffect::tick (float dt)
 {
-        if (this->cloudAnimTimeStep > 0) {
-                if (timer >= this->cloudAnimTimeStep) {
-                        timer -= this->cloudAnimTimeStep;
-                        for (int i = 0; i < 32*32; i++)
-                                cloudMap32_a[i] = cloudMap32_b[i];
-                        CloudEffect::genNoiseMap(cloudMap32_b);
-                }
-
-                //map32anim = (map32a * (10 - timer)) + (map32b * timer);
-                CloudEffect::calcAnimMap(timer);
-
-                CloudEffect::overlapOctaves();
-                CloudEffect::expFilter();
-                CloudEffect::genCloudTexture();
-
-                timer += dt;
-        }
-}
-
-/* 
-        Random noise generator
-*/
-float CloudEffect::noise(int x, int y, int random)
-{
-                int n = x + y * 57 + random * 131;
-                n = (n<<13) ^ n;
-                return (1.0f - ( (n * (n * n * 15731 + 789221) +
-                                                1376312589)&0x7fffffff)* 0.000000000931322574615478515625f);
-}
-
-/*
-        Set noise for the 32*32 noise map:
-*/
-void CloudEffect::genNoiseMap(float  *map)
-{
-        float temp[34][34];
-
-        int random = rand() % 5000;
-
-        for (int y = 1; y < 33; y++)
-                for (int x = 1; x < 33; x++)
-                        temp[x][y] = 128.0f + CloudEffect::noise(x,  y,  random) * 128.0f;
-
-        // Seamless cloud
-        for (int x=1; x<33; x++)
-        {
-                temp[0][x] = temp[32][x];
-                temp[33][x] = temp[1][x];
-                temp[x][0] = temp[x][32];
-                temp[x][33] = temp[x][1];
-        }
-        temp[0][0] = temp[32][32];
-        temp[33][33] = temp[1][1];
-        temp[0][33] = temp[32][1];
-        temp[33][0] = temp[1][32];
-
-        // We mirror the side and corner elements so our final cloud will be seamless without any ugly borders showing.
-        for (int y=1; y<33; y++)
-                for (int x=1; x<33; x++)
-                {
-                        float center = temp[x][y]/4.0f;
-                        float sides = (temp[x+1][y] + temp[x-1][y] + temp[x][y+1] + temp[x][y-1])/8.0f;
-                        float corners = (temp[x+1][y+1] + temp[x+1][y-1] + temp[x-1][y+1] + temp[x-1][y-1])/16.0f;
-
-                        map[((x-1)*32) + (y-1)] = center + sides + corners;
-                }
-}
-
-/*
-        Interpolation - average the value of each pixel value with that of its neighbors' values.
-*/
-float CloudEffect::interpolate(float x, float y, float  *map)
-{
-        int Xint = (int)x;
-        int Yint = (int)y;
-
-        float Xfrac = x - Xint;
-        float Yfrac = y - Yint;
-
-        int X0 = Xint % 32;
-        int Y0 = Yint % 32;
-        int X1 = (Xint + 1) % 32;
-        int Y1 = (Yint + 1) % 32;
-
-        float bot = map[X0*32 + Y0] + Xfrac * (map[X1*32 + Y0] - map[X0*32 + Y0]);
-        float top = map[X0*32 + Y1] + Xfrac * (map[X1*32 +  Y1] - map[X0*32 + Y1]);
-
-        return (bot + Yfrac * (top - bot));
-}
-
-
-/*
-        Octaves are overlapped together to give cloud more turbulence. We will use four octaves for our cloud.
-*/
-void CloudEffect::overlapOctaves()
-{
-        for (int x=0; x<256*256; x++)
-        {
-                cloudMap256[x] = 0;
-        }
-
-        for (int octave=0; octave<4; octave++)
-                for (int x=0; x<256; x++)
-                        for (int y=0; y<256; y++)
-                        {
-                                float scale = 1 / pow(2.0f, (float) 3-octave);
-                                float noise = CloudEffect::interpolate(x*scale, y*scale , cloudMap32_c);
-
-                                //The octaves are added together with the proper weight factors.
-                                //You could replace pow(2, i) with 1<<i for faster computation
-                                cloudMap256[(y*256) + x] += noise / pow(2.0f, (float) octave);
-                        }
-}
-
-
-/*
-        Filter the noise with exponential function
-*/
-void CloudEffect::expFilter()
-{
-        float cover = 20.0f;
-        float sharpness = 0.95f;
-
-        for (int x=0; x<256*256; x++)
-        {
-                float c = cloudMap256[x] - (255.0f-cover);
-                if (c<0)     c = 0;
-                cloudMap256[x] = 255.0f - ((float)(pow(sharpness, c))*255.0f);
-        }
-}
-
-
+        if (!this->cloudActivate)
+                return;
+
+        // Update the timer for scrolling the clouds
+        time = time + ((1.0f / 2000.0f) * cloudScroll);
+}
+