GLuint LoadTexture( const char * filename)
{
GLuint id;
// Load image from tga file
//TGA *TGAImage = new TGA("./sphericalenvironmentmap/house2.tga");
TGA *TGAImage = new TGA(filename);
//TGA *TGAImage = new TGA("./cubicenvironmentmap/cm_right.tga");
// Use to dimensions of the image as the texture dimensions
uint width = TGAImage->GetWidth();
uint height = TGAImage->GetHeigth();
// The parameters for actual textures are changed
glGenTextures(1, &id);
glBindTexture(GL_TEXTURE_2D, id);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
// Finaly build the mipmaps
glTexImage2D (GL_TEXTURE_2D, 0, 4, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, TGAImage->GetPixels());
gluBuild2DMipmaps(GL_TEXTURE_2D, 4, width, height, GL_RGBA, GL_UNSIGNED_BYTE, TGAImage->GetPixels());
glEnable( GL_TEXTURE_2D );
glBindTexture (GL_TEXTURE_2D, id);
delete TGAImage;
return id;
}
void DisplayFunc(void)
{
GLuint id ;
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
//load projection and viewing transforms
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(60,(GLdouble) WindowWidth/WindowHeight,0.01,10000);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt(CameraRadius*cos(CameraTheta)*sin(CameraPhi),
CameraRadius*cos(CameraPhi),
CameraRadius*sin(CameraTheta)*sin(CameraPhi),
0,0,0,
0,1,0);
glEnable(GL_DEPTH_TEST);
glEnable(GL_TEXTURE_2D);
setParameters(program);
// Load image from tga file
char* tgaFile = "";
if(texture == 0 && mapping == 0)
tgaFile = "./planartexturemap/abstract2.tga";
else if(texture == 1 && mapping == 0)
tgaFile = "./sphericaltexturemap/earth2.tga";
else if(mapping == 1)
tgaFile = "./sphericalenvironmentmap/house2.tga";
else
tgaFile = "./planartexturemap/abstract2.tga";
//tgaFile = "./planarbumpmap/abstract_gray2.tga";
TGA *TGAImage = new TGA(tgaFile);
// Use to dimensions of the image as the texture dimensions
uint width = TGAImage->GetWidth();
uint height = TGAImage->GetHeigth();
// The parameters for actual textures are changed
glGenTextures(1, &id);
glBindTexture(GL_TEXTURE_2D, id);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
// Finaly build the mipmaps
glTexImage2D (GL_TEXTURE_2D, 0, 4, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, TGAImage->GetPixels());
gluBuild2DMipmaps(GL_TEXTURE_2D, 4, width, height, GL_RGBA, GL_UNSIGNED_BYTE, TGAImage->GetPixels());
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
glEnable( GL_TEXTURE_2D );
glBindTexture (GL_TEXTURE_2D, id);
delete TGAImage;
if (object == 0)
{
float w = .1;
for (float i = -20; i < 20; i += w)
for (float j = -20; j < 20; j += w)
{
point v1, v2, v3, v4;
v1.x = i;
v1.y = j;
v1.z = 0;
v2.x = i+w;
v2.y = j;
v2.z = 0;
v3.x = i;
v3.y = j+w;
v3.z = 0;
v4.x = i+w;
v4.y = j+w;
v4.z = 0;
drawTriangle(v1, v2, v3);
drawTriangle(v2, v3, v4);
}
}
else if(object == 1)
{
gluQuadricTexture(quad,1);
gluSphere(quad,2,20,20);
}
else if (object == 2)
for (int i = 0; i < faces; i++)
drawTriangle(vertList[faceList[i].v1], vertList[faceList[i].v2], vertList[faceList[i].v3]);
//glutSolidTeapot(1);
//setParameters(program);
glutSwapBuffers();
}