Texture::Texture(std::string filename, ResourceInfo* resourceInfo)
{
m_filename = filename;
m_resourceInfo = resourceInfo;
ImageBMP image;
image.Load(filename);
// Create one OpenGL texture
glGenTextures(1, &m_id);
// "Bind" the newly created texture : all future texture functions will modify this texture
glBindTexture(GL_TEXTURE_2D, m_id);
// Give the image to OpenGL
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, image.Width(), image.Height(), 0, GL_BGR, GL_UNSIGNED_BYTE, image.DataPtr());
image.FreeData();
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
}
void Terrain::Initialize(const char* sTexture, const char* sHeightMap, const char* sNormalMap, float fHeight)
{
SetHeight(fHeight);
ImageBMP* image = new ImageBMP(m_OpenGL);
image->Load(sHeightMap);
m_Texture = new Texture(m_OpenGL);
TextureID = m_Texture->GetTexture2D(sTexture);
iWidth = image->GetWidth();
iHeight = image->GetHeight();
hs = new float*[image->GetHeight()];
Normal = new Vector3f*[image->GetHeight()];
NormalTemp = new Vector3f*[image->GetHeight()];
for (unsigned int i = 0; i < image->GetHeight(); ++i)
{
hs[i] = new float[image->GetWidth()];
Normal[i] = new Vector3f[image->GetWidth()];
NormalTemp[i] = new Vector3f[image->GetWidth()];
}
for (unsigned int y = 0; y < image->GetHeight(); y++)
{
for (unsigned int x = 0; x < image->GetWidth(); x++)
{
unsigned char color = (unsigned char)image->GetData()[3 * (y * image->GetWidth() + x)];
float h = ((color / 255.0f) - 0.5f);
SetHeight(x, y, h);
}
}
ComputeNormal();
GenerateTerrain();
Bind();
vPosition = Vector3f(0, -20, 0);
}