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source: orxonox.OLD/branches/test/src/lib/graphics/importer/texture_data.cc @ 10166

Last change on this file since 10166 was 8363, checked in by bensch, 18 years ago

trunk: splitted Texture and TextureData into two files.
Also fixed the Creator-Function for Textures with empty textures with size

File size: 2.3 KB
Line 
1/*
2   orxonox - the future of 3D-vertical-scrollers
3
4   Copyright (C) 2004 orx
5
6   This program is free software; you can redistribute it and/or modify
7   it under the terms of the GNU General Public License as published by
8   the Free Software Foundation; either version 2, or (at your option)
9   any later version.
10
11   ### File Specific:
12   main-programmer: Benjamin Grauer
13   co-programmer: ...
14*/
15
16#define DEBUG_SPECIAL_MODULE DEBUG_MODULE_IMPORTER
17
18#include "texture.h"
19
20#include "debug.h"
21#include "compiler.h"
22
23#include "sdlincl.h"
24
25/**
26 * @brief creates a new Texture Data.
27 */
28TextureData::TextureData()
29{
30  this->bAlpha = false;
31  this->texture = 0;
32  this->image = NULL;
33}
34
35
36/**
37 * @brief Destructor of a Texture
38 *
39 *  Frees Data, and deletes the textures from GL
40 */
41TextureData::~TextureData()
42{
43  if (this->texture != 0)
44    glDeleteTextures(1, &this->texture);
45  if (this->image != NULL)
46    SDL_FreeSurface(this->image);
47}
48
49
50/**
51 * @brief Loads an SDL_Surface.
52 * @param surface the Surface to Load.
53 * @param target the GL-Target to load the Surface to default GL_TEXTURE_2D
54 * @returns true on success, false otherwise.
55 */
56bool TextureData::loadSurface(SDL_Surface* surface, GLenum target)
57{
58  if (Texture::getTextureEnableState())
59  {
60    SDL_Surface* newSurf = Texture::prepareSurface(surface, this->bAlpha);
61    if (newSurf != NULL)
62    {
63      this->setSurface(newSurf);
64      this->setTexture(Texture::loadTexToGL(newSurf, target));
65      return true;
66    }
67  }
68  return false;
69}
70
71
72
73/**
74 * @brief set the surface this Texture handles
75 * @param newSurface the new Surface to set as the image for this Texture.
76 * @returns true on success.
77 *
78 * This deletes the old version of the stored Texture,
79 * and sets the newly given Surface as current.
80 */
81bool TextureData::setSurface(SDL_Surface* newSurface)
82{
83  if (this->image != NULL)
84    SDL_FreeSurface(this->image);
85
86  this->image = newSurface;
87
88  return (this->image != NULL);
89}
90
91
92/**
93 * @brief sets a new Texture to the Data.
94 * @param texture the Texture
95 * @returns true on success.
96 */
97bool TextureData::setTexture(GLuint texture)
98{
99     // unload the old Texture.
100  if (this->texture != 0 && glIsTexture(this->getTexture()))
101  {
102    glDeleteTextures(1, &this->texture);
103  }
104  this->texture = texture;
105  return (texture != 0);
106}
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