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Texture.cpp
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//********************************************
// Texture.cpp
//********************************************
// class CTexture
//********************************************
// pierre.alliez@cnet.francetelecom.fr
// Created : 17/12/97
// Modified : 19/12/97
//********************************************
#include "stdafx.h"
#include "math.h"
#include "Texture.h"
//////////////////////////////////////////////
// CONSTRUCTORS
//////////////////////////////////////////////
//********************************************
// Constructor
//********************************************
CTexture::CTexture()
{
m_pData = NULL;
m_Width = 0;
m_WidthByte32 = 0;
m_Height = 0;
m_Depth = 0;
m_FileName = _T("");
}
//********************************************
// Destructor
//********************************************
CTexture::~CTexture()
{
Free();
}
//////////////////////////////////////////////
// DATAS
//////////////////////////////////////////////
//********************************************
// 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;
}
//********************************************
// Free
//********************************************
void CTexture::Free()
{
if(m_pData != NULL)
{
delete [] m_pData;
m_pData = NULL;
}
m_Width = 0;
m_Height = 0;
m_Depth = 0;
}
//////////////////////////////////////////////
//////////////////////////////////////////////
// FILE READING
//////////////////////////////////////////////
//////////////////////////////////////////////
//********************************************
// ReadFile
// Redirection
//********************************************
int CTexture::ReadFile(const char *filename,
unsigned int width,
unsigned int height,
unsigned int depth)
{
// Cleanup
Free();
// Storage
m_FileName = filename;
// Extension
CString string = filename;
string.MakeLower();
TRACE("CTexture::ReadFile : file : %s\n",filename);
CString extension = string.Right(4);
// Redirection BMP
if(extension == ".bmp")
return ReadFileBMP(filename);
// Redirection RAW
if(extension == ".raw")
return ReadFileRAW(filename,width,height,depth);
// Unrecognized file format
CString message;
message.Format("CTexture::ReadFile : invalid file redirection : %s\n",filename);
AfxMessageBox(string);
return 0;
}
//********************************************
// ReadFileBMP (*.bmp)
//********************************************
// Read windows bmp files
// Accept only 24 bits
// Size : 2^n x 2^m
//********************************************
int CTexture::ReadFileBMP(const char *filename)
{
// Check for valid bmp file
CFile file;
CFileException ex;
// Try to open file
if(!file.Open(filename, CFile::modeRead | CFile::typeBinary,&ex))
{
#ifdef _DEBUG
afxDump << "File could not be opened " << ex.m_cause << "\n";
#endif
AfxMessageBox("Unable to open file for reading");
return 0;
}
// File header
BITMAPFILEHEADER FileHeader;
TRY
{
file.Read(&FileHeader,sizeof(BITMAPFILEHEADER));
}
CATCH(CFileException, e)
{
#ifdef _DEBUG
afxDump << "Error during reading " << e->m_cause << "\n";
#endif
AfxMessageBox("Error during reading file header");
file.Close();
return 0;
}
END_CATCH
/*
TRACE("FileHeader.bfType : %d\n",FileHeader.bfType);
TRACE("FileHeader.bfSize : %d\n",FileHeader.bfSize);
TRACE("FileHeader.bfReserved1 : %d\n",FileHeader.bfReserved1);
TRACE("FileHeader.bfReserved2 : %d\n",FileHeader.bfReserved2);
TRACE("FileHeader.bfOffBits : %d\n",FileHeader.bfOffBits);
*/
// Is it a Windows BMP file ? (BM)
WORD sign = ((WORD) ('M' << 8) | 'B');
if(FileHeader.bfType != sign)
{
AfxMessageBox("Invalid BMP file");
file.Close();
return 0;
}
// Image header
TRY
{
file.Read(&m_Header,sizeof(BITMAPINFOHEADER));
}
CATCH(CFileException, e)
{
#ifdef _DEBUG
afxDump << "Error during reading " << e->m_cause << "\n";
#endif
AfxMessageBox("Error during reading image header");
file.Close();
return 0;
}
END_CATCH
/*
// DEBUG
TRACE("\n");
TRACE("**** IMAGE HEADER :\n");
TRACE("**** biSize : %d\n",m_Header.biSize);
TRACE("**** biWidth : %d\n",m_Header.biWidth);
TRACE("**** biHeight : %d\n",m_Header.biHeight);
TRACE("**** biPlanes : %d\n",m_Header.biPlanes);
TRACE("**** biBitCount : %d\n",m_Header.biBitCount);
TRACE("**** biCompression : %d\n",m_Header.biCompression);
TRACE("**** biSizeImage : %d\n",m_Header.biSizeImage);
TRACE("**** biXPelsPerMeter : %d\n",m_Header.biXPelsPerMeter);
TRACE("**** biYPelsPerMeter : %d\n",m_Header.biYPelsPerMeter);
TRACE("**** biClrUsed : %d\n",m_Header.biClrUsed);
TRACE("**** biClrImportant : %d\n",m_Header.biClrImportant);
*/
// 24 bits ?
if(m_Header.biPlanes != 1 ||
m_Header.biBitCount != 24)
{
AfxMessageBox("Texture file must have 24 bits depth");
file.Close();
return 0;
}
// Alloc (does call Free before)
Free();
m_pData = new unsigned char[m_Header.biSizeImage];
if(m_pData == NULL)
{
AfxMessageBox("Insuffisant memory");
file.Close();
return 0;
}
// Update datas
m_Width = m_Header.biWidth;
m_Height = m_Header.biHeight;
m_Depth = m_Header.biBitCount;
// Image reading
TRY
{
file.Read(m_pData,m_Header.biSizeImage);
}
CATCH(CFileException, e)
{
#ifdef _DEBUG
afxDump << "Error during reading " << e->m_cause << "\n";
#endif
AfxMessageBox("Error during reading image");
file.Close();
return 0;
}
END_CATCH
// Close file
file.Close();
// Success, also set FileName
m_FileName = filename;
UpdateWidthByte32();
return 1;
}
//********************************************
// UpdateWidthByte32
//********************************************
void CTexture::UpdateWidthByte32()
{
m_WidthByte32 = WidthByte32(m_Width,m_Depth);
}
//********************************************
// WidthByte32
//********************************************
unsigned int CTexture::WidthByte32(unsigned int width,
unsigned int depth)
{
// 32 bits alignment (4 bytes)
int rest=(width*depth/8)%4;
if(rest != 0)
return (width*depth/8 + 4-rest);
else
return (width*depth/8);
}
//********************************************
// UpdateHeader
//********************************************
void CTexture::UpdateHeader()
{
UpdateWidthByte32();
m_Header.biWidth = m_Width;
m_Header.biHeight = m_Height;
m_Header.biSizeImage = m_WidthByte32 * m_Height;
m_Header.biSize = 40;
m_Header.biPlanes = 1;
m_Header.biBitCount = m_Depth;
m_Header.biCompression = 0;
m_Header.biXPelsPerMeter = 0;
m_Header.biYPelsPerMeter = 0;
m_Header.biClrUsed = 0;
m_Header.biClrImportant = 0;
}
//********************************************
// ReadFileRAW (*.raw)
//********************************************
// Read raw files
// Accept only 24 or 32 bits
// Size : 2^n x 2^m
//********************************************
int CTexture::ReadFileRAW(const char *filename,
unsigned int width,
unsigned int height,
unsigned int depth)
{
ASSERT(width>0);
ASSERT(height>0);
ASSERT(depth>0);
ASSERT(depth%8==0);
ASSERT(depth/8==3 || depth/8==4);
// Check for valid file
CFile file;
CFileException ex;
// Try to open file
if(!file.Open(filename, CFile::modeRead | CFile::typeBinary,&ex))
{
#ifdef _DEBUG
afxDump << "File could not be opened " << ex.m_cause << "\n";
#endif
AfxMessageBox("Unable to open file for reading");
return 0;
}
// Alloc (does call Free before)
if(!Alloc(width,height,depth))
{
AfxMessageBox("Insuffisant memory");
file.Close();
return 0;
}
// Image reading
TRY
{
file.Read(m_pData,m_Width*m_Height*depth/8);
}
CATCH(CFileException, e)
{
#ifdef _DEBUG
afxDump << "Error during reading " << e->m_cause << "\n";
#endif
AfxMessageBox("Error during reading image");
file.Close();
return 0;
}
END_CATCH
// Close file
file.Close();
// Success, also set FileName
m_FileName = filename;
return 1;
}
//////////////////////////////////////////////
//////////////////////////////////////////////
// FILE SAVING
//////////////////////////////////////////////
//////////////////////////////////////////////
//********************************************
// SaveFile
// Redirection
//********************************************
int CTexture::SaveFile(char *filename)
{
CString string = filename;
string.MakeLower();
TRACE("CTexture::SaveFile : file : %s\n",filename);
CString extension = string.Right(4);
// Redirection RAW
if(extension == ".raw")
return SaveFileRAW(filename);
// Redirection BMP
if(extension == ".bmp")
return SaveFileBMP(filename);
// Unrecognized file format
CString message;
message.Format("CTexture::SaveFile : invalid file redirection : %s\n",filename);
AfxMessageBox(message);
return 0;
}
//********************************************
// SaveFileRAW
//********************************************
int CTexture::SaveFileRAW(char *filename)
{
// Check for valid image
if((m_Width * m_Height * m_Depth) == 0)
{
AfxMessageBox("CTexture::SaveFileRAW : invalid image");
return 0;
}
// Check for valid file
CFile file;
CFileException ex;
// Try to open file
if(!file.Open(filename, CFile::modeWrite | CFile::typeBinary,&ex))
{
#ifdef _DEBUG
afxDump << "File could not be opened " << ex.m_cause << "\n";
#endif
AfxMessageBox("Unable to open file for writing");
return 0;
}
// Image writing
TRY
{
file.Write(m_pData,m_Width*m_Height*m_Depth/8);
}
CATCH(CFileException, e)
{
#ifdef _DEBUG
afxDump << "Error during writing " << e->m_cause << "\n";
#endif
AfxMessageBox("Error during writing image");
file.Close();
return 0;
}
END_CATCH
// Close file
file.Close();
return 1;
}
//********************************************
// SaveFileBMP (*.bmp)
//********************************************
// Save windows bmp files
// Accept only 24 bits
//********************************************
int CTexture::SaveFileBMP(char *filename)
{
if(!IsValid())
return 0;
if(m_Depth != 24)
return 0;
// Check for valid bmp file
CFile file;
CFileException ex;
// Try to open file
if(!file.Open(filename,CFile::modeCreate | CFile::modeWrite | CFile::typeBinary,&ex))
{
#ifdef _DEBUG
afxDump << "File could not be opened " << ex.m_cause << "\n";
#endif
AfxMessageBox("Unable to open file for writing");
return 0;
}
// File header
BITMAPFILEHEADER FileHeader;
WORD sign = ((WORD) ('M' << 8) | 'B');
FileHeader.bfType = sign;
FileHeader.bfSize = 14 + 40 + m_WidthByte32*m_Height;
FileHeader.bfReserved1 = 0;
FileHeader.bfReserved2 = 0;
FileHeader.bfOffBits = 54;
TRACE("\nSave BMP File...\n");
TRACE("FileHeader.bfType : %d\n",FileHeader.bfType);
TRACE("FileHeader.bfSize : %d\n",FileHeader.bfSize);
TRACE("FileHeader.bfReserved1 : %d\n",FileHeader.bfReserved1);
TRACE("FileHeader.bfReserved2 : %d\n",FileHeader.bfReserved2);
TRACE("FileHeader.bfOffBits : %d\n",FileHeader.bfOffBits);
TRY
{
file.Write(&FileHeader,sizeof(BITMAPFILEHEADER));
}
CATCH(CFileException, e)
{
#ifdef _DEBUG
afxDump << "Error during writing " << e->m_cause << "\n";
#endif
AfxMessageBox("Error during writing file header");
file.Close();
return 0;
}
END_CATCH
// Image header
TRY
{
file.Write(&m_Header,sizeof(BITMAPINFOHEADER));
}
CATCH(CFileException, e)
{
#ifdef _DEBUG
afxDump << "Error during writing " << e->m_cause << "\n";
#endif
AfxMessageBox("Error during writing image header");
file.Close();
return 0;
}
END_CATCH
// DEBUG
TRACE("\n");
TRACE("**** IMAGE HEADER :\n");
TRACE("**** biSize : %d\n",m_Header.biSize);
TRACE("**** biWidth : %d\n",m_Header.biWidth);
TRACE("**** biHeight : %d\n",m_Header.biHeight);
TRACE("**** biPlanes : %d\n",m_Header.biPlanes);
TRACE("**** biBitCount : %d\n",m_Header.biBitCount);
TRACE("**** biCompression : %d\n",m_Header.biCompression);
TRACE("**** biSizeImage : %d\n",m_Header.biSizeImage);
TRACE("**** biXPelsPerMeter : %d\n",m_Header.biXPelsPerMeter);
TRACE("**** biYPelsPerMeter : %d\n",m_Header.biYPelsPerMeter);
TRACE("**** biClrUsed : %d\n",m_Header.biClrUsed);
TRACE("**** biClrImportant : %d\n",m_Header.biClrImportant);
// Image writing
TRY
{
file.Write(m_pData,m_Header.biSizeImage);
}
CATCH(CFileException, e)
{
#ifdef _DEBUG
afxDump << "Error during writing " << e->m_cause << "\n";
#endif
AfxMessageBox("Error during writing image");
file.Close();
return 0;
}
END_CATCH
// Close file
file.Close();
return 1;
}
//////////////////////////////////////////////
//////////////////////////////////////////////
// CHECKING
//////////////////////////////////////////////
//////////////////////////////////////////////
//********************************************
// IsValid
//********************************************
int CTexture::IsValid()
{
int success = 0;
success = (m_Depth == 24) || (m_Depth == 32);
success &= (m_Width != 0);
success &= (m_Height != 0);
success &= (m_pData != NULL);
if(!success)
{
TRACE("\n");
TRACE("Invalid texture\n");
TRACE("Width : %d\n",m_Width);
TRACE("Height : %d\n",m_Height);
TRACE("Depth : %d\n",m_Depth);
TRACE("Data : %x\n",m_pData);
}
return success;
}
//********************************************
// HigherPowerOfTwo
//********************************************
int CTexture::HigherPowerOfTwo(int value)
{
ASSERT(value > 0);
if(value <= 0)
return value;
int power = 1;
int x = 0;
while(1)
{
x = (int)pow(2,power);
if(x >= value)
return x;
power++;
}
return value;
}
//********************************************
// LowerPowerOfTwo
//********************************************
int CTexture::LowerPowerOfTwo(int value)
{
ASSERT(value > 0);
if(value <= 0)
return value;
int power = 1;
int x = 0;
while(1)
{
x = (int)pow(2,power);
if(x >= value)
return (int)pow(2,power-1);
power++;
}
return value;
}
//********************************************
// SameSize
//********************************************
int CTexture::SameSize(CTexture *pTexture)
{
int success = (m_Width == pTexture->GetWidth());
success &= (m_Height == pTexture->GetHeight());
return success;
}
//********************************************
// Flip BGR to RGB
//********************************************
int CTexture::BGRtoRGB(void)
{
if(!IsValid())
return 0;
unsigned char pixel;
int BytePerPixel = m_Depth/8;
for(unsigned int j=0;j<m_Height;j++)
for(unsigned int i=0;i<m_Width;i++)
{
pixel = m_pData[m_WidthByte32*j+i*BytePerPixel+2];
m_pData[m_WidthByte32*j+i*BytePerPixel+2] = m_pData[m_WidthByte32*j+i*BytePerPixel];
m_pData[m_WidthByte32*j+i*BytePerPixel] = pixel;
}
return 1;
}
//////////////////////////////////////////////
//////////////////////////////////////////////
// DUPLICATE
//////////////////////////////////////////////
//////////////////////////////////////////////
//********************************************
// Extract
//********************************************
int CTexture::Extract(int left,
int top,
int right,
int bottom)
{
ASSERT(IsValid());
// 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);
ASSERT(NewWidth>=1);
ASSERT(NewHeight>=1);
// Alloc
unsigned char *pData = new unsigned char[NewWidthByte32*NewHeight];
if(pData == NULL)
{
AfxMessageBox("Insuffisant memeory");
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;
}
//********************************************
// DuplicateMirror
//********************************************
int CTexture::DuplicateMirror(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 = 2*m_Height;
int BytePerPixel = m_Depth / 8;
int i,j,k;
TRACE("Start duplicate mirror...\n");
TRACE("New width : %d\n",NewWidth);
TRACE("New widthbyte32 : %d\n",NewWidthByte32);
TRACE("New height : %d\n",NewHeight);
ASSERT(NewWidth>=1);
ASSERT(NewHeight>=1);
// Alloc
unsigned char *pData = new unsigned char[NewWidthByte32*NewHeight];
if(pData == NULL)
{
AfxMessageBox("Insuffisant memeory");
return 0;
}
// o o
// x o
for(j=0;j<NewHeight/2;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 o
// o x
for(j=0;j<NewHeight/2;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))+(right-(i-NewWidth/2+left))*BytePerPixel+k];
// x o
// o o
for(j=NewHeight/2;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*(j-NewHeight/2+top)+(i+left)*BytePerPixel+k];
// o x
// o o
for(j=NewHeight/2;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*(j-NewHeight/2+top)+(right-(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;
}
//********************************************
// DuplicateRepeatWidth
//********************************************
int CTexture::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 mirror...\n");
TRACE("New width : %d\n",NewWidth);
TRACE("New widthbyte32 : %d\n",NewWidthByte32);
TRACE("New height : %d\n",NewHeight);
ASSERT(NewWidth>=1);
ASSERT(NewHeight>=1);
// Alloc
unsigned char *pData = new unsigned char[NewWidthByte32*NewHeight];
if(pData == NULL)
{
AfxMessageBox("Insuffisant memeory");
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;
}
//////////////////////////////////////////////
//////////////////////////////////////////////
// ALPHA
//////////////////////////////////////////////
//////////////////////////////////////////////
//********************************************
// SetAlphaLayer
//********************************************
int CTexture::SetAlphaLayer(unsigned char alpha) // 0 - 255
{
// Check
if(!IsValid())
return 0;
if(m_Depth != 32)
return 0;
// Fill alpha layer
int size = m_Width * m_Height;
for(int i=0;i<4*size;i+=4)
m_pData[i+3] = alpha;
return 1;
}
//********************************************
// AddAlphaLayer
//********************************************
int CTexture::AddAlphaLayer(unsigned char alpha) // 0 - 255
{
// Check
if(!IsValid())
return 0;
// Has soon alpha
if(HasAlpha())
return SetAlphaLayer(alpha);
// Alloc memory
unsigned char *pData = new unsigned char[4*m_Width*m_Height];
if(pData == NULL)
{
AfxMessageBox("CTexture::AddAlphaLayer : insuffisant memory");
return 0;
}
// Fill new data
int size = m_Width * m_Height;
int BytePerPixel = m_Depth / 8;
ASSERT(size > 0);
for(int i=0;i<size;i++)
{
pData[4*i+0] = m_pData[BytePerPixel*i+0];
pData[4*i+1] = m_pData[BytePerPixel*i+1];
pData[4*i+2] = m_pData[BytePerPixel*i+2];
pData[4*i+3] = alpha;
}
// Set new depth
m_Depth = 32;
// Replace datas
delete [] m_pData;
m_pData = pData;
return 1;
}
//********************************************
// PutAlpha
// From RGB to grey scales, then alpha layer
//********************************************
int CTexture::PutAlpha(CTexture *pTexture)
{
// Check
if(!IsValid())
return 0;
if(!pTexture->IsValid())
return 0;
if(!SameSize(pTexture))
return 0;
if(!AddAlphaLayer(0))
return 0;
// Fill new data
unsigned char *pData = pTexture->GetData();