//********************************************
// Alloc
//********************************************
int CTexture::Alloc(unsigned int width,
unsigned int height,
unsigned int depth)
{
Free();
unsigned int BytePerPixel = (unsigned int)(depth / 8);
unsigned int Width32 = WidthByte32(width,depth);
// Only rgb and rgba modes
ASSERT(BytePerPixel == 3 ||
BytePerPixel == 4);
m_pData = new unsigned char [Width32 * height];
if(m_pData == NULL)
{
TRACE("CTexture::Alloc : Insuffisant memory\n");
AfxMessageBox("CTexture::Alloc : Insufisant memory");
return 0;
}
// Set members variables
m_Width = width;
m_WidthByte32 = Width32;
m_Height = height;
m_Depth = depth;
UpdateHeader();
return 1;
}
//********************************************
// Extract
//********************************************
int Texture::Extract(int left, int top, int right, int bottom)
{
// Saturate
if(right == -1)
right = m_Width-1;
if(bottom == -1)
bottom = m_Height-1;
// Check
if(left >= right || top >= bottom)
return 0;
if(left < 0 || left >= (int)m_Width ||
right < 0 || right >= (int)m_Width)
return 0;
if(top < 0 || top >= (int)m_Height ||
bottom < 0 || bottom >= (int)m_Height)
return 0;
int NewWidth = right-left+1;
int NewWidthByte32 = WidthByte32(NewWidth,m_Depth);
int NewHeight = bottom-top+1;
int BytePerPixel = m_Depth / 8;
int i,j,k;
//TRACE("Start extracting...\n");
//TRACE("New width : %d\n",NewWidth);
//TRACE("New height : %d\n",NewHeight);
// Alloc
unsigned char *pData = new unsigned char[NewWidthByte32*NewHeight];
if(pData == NULL)
{
//TRACE("Insufficiant memory");
return 0;
}
for(j=0;j<NewHeight;j++)
for(i=0;i<NewWidth;i++)
for(k=0;k<BytePerPixel;k++)
pData[NewWidthByte32*j+i*BytePerPixel+k] = m_pData[m_WidthByte32*(m_Height-1-(j+top))+(i+left)*BytePerPixel+k];
// Replace datas
delete [] m_pData;
m_pData = pData;
m_Width = NewWidth;
m_WidthByte32 = NewWidthByte32;
m_Height = NewHeight;
UpdateHeader();
return 1;
}
//********************************************
// DuplicateRepeatWidth
//********************************************
int Texture::DuplicateRepeatWidth(int left, int top, int right, int bottom)
{
if(!Extract(left,top,right,bottom))
return 0;
left = 0;
right = m_Width-1;
top = 0;
bottom = m_Height-1;
int NewWidth = 2*m_Width;
int NewWidthByte32 = WidthByte32(NewWidth,m_Depth);
int NewHeight = m_Height;
int BytePerPixel = m_Depth / 8;
int i,j,k;
////TRACE("Start duplicate repeat width...\n");
////TRACE("New width : %d\n",NewWidth);
////TRACE("New widthbyte32 : %d\n",NewWidthByte32);
////TRACE("New height : %d\n",NewHeight);
// Alloc
unsigned char *pData = new unsigned char[NewWidthByte32*NewHeight];
if(pData == NULL)
{
////TRACE("Insufficiant memory");
return 0;
}
// x o
for(j=0;j<NewHeight;j++)
for(i=0;i<NewWidth/2;i++)
for(k=0;k<BytePerPixel;k++)
pData[NewWidthByte32*j+i*BytePerPixel+k] = m_pData[m_WidthByte32*(bottom-(j+top))+(i+left)*BytePerPixel+k];
// o x
for(j=0;j<NewHeight;j++)
for(i=NewWidth/2;i<NewWidth;i++)
for(k=0;k<BytePerPixel;k++)
pData[NewWidthByte32*j+i*BytePerPixel+k] = m_pData[m_WidthByte32*(bottom-(j+top))+(i-NewWidth/2+left)*BytePerPixel+k];
// Replace datas
delete [] m_pData;
m_pData = pData;
m_Width = NewWidth;
m_WidthByte32 = NewWidthByte32;
m_Height = NewHeight;
UpdateHeader();
return 1;
}
//********************************************
// Alloc
//********************************************
int Texture::Alloc(unsigned int width, unsigned int height, unsigned int depth)
{
Free();
unsigned int Width32 = WidthByte32(width,depth);
m_pData = new unsigned char [Width32 * height];
if(m_pData == NULL)
{
return 0;
}
// Set members variables
m_Width = width;
m_WidthByte32 = Width32;
m_Height = height;
m_Depth = depth;
UpdateHeader();
return 1;
}
//********************************************
// UpdateWidthByte32
//********************************************
void Texture::UpdateWidthByte32()
{
m_WidthByte32 = WidthByte32(m_Width,m_Depth);
}
