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cgal/Polyhedron/demo/Polyhedron/texture.cpp

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/***************************************************************************
texture.cpp
----------------------------------------------------------------------------
begin : june 2003
copyright : (C) 2003 by Pierre Alliez - INRIA
email : pierre.alliez@sophia.inria.fr
***************************************************************************/
#include <math.h>
#include <string.h>
#include "texture.h"
//////////////////////////////////////////////
// CONSTRUCTORS
//////////////////////////////////////////////
//********************************************
// Constructor
//********************************************
Texture::Texture()
{
m_pData = NULL;
m_Width = 0;
m_WidthByte32 = 0;
m_Height = 0;
m_Depth = 0;
}
//********************************************
// Destructor
//********************************************
Texture::~Texture()
{
Free();
}
//////////////////////////////////////////////
// DATA
//////////////////////////////////////////////
//********************************************
// 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;
}
//********************************************
// Free
//********************************************
void Texture::Free()
{
if(m_pData != NULL)
{
delete [] m_pData;
m_pData = NULL;
}
m_Width = 0;
m_Height = 0;
m_Depth = 0;
}
//********************************************
// UpdateWidthByte32
//********************************************
void Texture::UpdateWidthByte32()
{
m_WidthByte32 = WidthByte32(m_Width,m_Depth);
}
//********************************************
// WidthByte32
//********************************************
unsigned int Texture::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 Texture::UpdateHeader()
{
UpdateWidthByte32();
}
//////////////////////////////////////////////
//////////////////////////////////////////////
// CHECKING
//////////////////////////////////////////////
//////////////////////////////////////////////
//********************************************
// IsValid
//********************************************
int Texture::IsValid()
{
int success = 0;
success = (m_Depth == 24) || (m_Depth == 32);
success &= (m_Width != 0);
success &= (m_Height != 0);
success &= (m_pData != NULL);
return success;
}
//********************************************
// HigherPowerOfTwo
//********************************************
int Texture::HigherPowerOfTwo(int value)
{
if(value <= 0)
return value;
int power = 1;
int x = 0;
while(1)
{
x = (int)pow(2.0,(double)power);
if(x >= value)
return x;
power++;
}
}
//********************************************
// LowerPowerOfTwo
//********************************************
int Texture::LowerPowerOfTwo(int value)
{
if(value <= 0)
return value;
int power = 1;
int x = 0;
while(1)
{
x = (int)pow(2.0,(double)power);
if(x >= value)
return (int)pow(2.0,(double)power-1);
power++;
}
}
//********************************************
// SameSize
//********************************************
int Texture::SameSize(Texture *pTexture)
{
int success = (m_Width == pTexture->GetWidth());
success &= (m_Height == pTexture->GetHeight());
return success;
}
//********************************************
// Flip BGR to RGB
//********************************************
int Texture::BGRtoRGB()
{
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 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;
}
//********************************************
// DuplicateMirror
//********************************************
int Texture::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);
// Alloc
unsigned char *pData = new unsigned char[NewWidthByte32*NewHeight];
if(pData == NULL)
{
//TRACE("Insufficiant memory");
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 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;
}
//********************************************
// Fill
//********************************************
void Texture::Fill(unsigned char r,
unsigned char g,
unsigned char b)
{
if(!IsValid()) return;
if(m_Depth != 24) return;
for(unsigned int j=0;j<m_Height;j++)
for(unsigned int i=0;i<m_Width;i++)
{
m_pData[m_WidthByte32*j+i*3] = b;
m_pData[m_WidthByte32*j+i*3+1] = g;
m_pData[m_WidthByte32*j+i*3+2] = r;
}
}
//***************************************
// GreyToColor
//***************************************
void Texture::GreyToColor(unsigned char grey,
unsigned char r,
unsigned char g,
unsigned char b)
{
if(!IsValid()) return;
if(m_Depth != 24) return;
for(unsigned int j=0;j<m_Height;j++)
for(unsigned int i=0;i<m_Width;i++)
{
if(m_pData[m_WidthByte32*j+i*3] == grey)
{
m_pData[m_WidthByte32*j+i*3] = b;
m_pData[m_WidthByte32*j+i*3+1] = g;
m_pData[m_WidthByte32*j+i*3+2] = r;
}
}
}
//***************************************
// ColorToColor
//***************************************
void Texture::ColorToColor(unsigned char r1,
unsigned char g1,
unsigned char b1,
unsigned char r2,
unsigned char g2,
unsigned char b2)
{
if(!IsValid()) return;
if(m_Depth != 24) return;
for(unsigned int j=0;j<m_Height;j++)
for(unsigned int i=0;i<m_Width;i++)
{
if(m_pData[m_WidthByte32*j+i*3] == b1 &&
m_pData[m_WidthByte32*j+i*3+1] == g1 &&
m_pData[m_WidthByte32*j+i*3+2] == r1)
{
m_pData[m_WidthByte32*j+i*3] = b2;
m_pData[m_WidthByte32*j+i*3+1] = g2;
m_pData[m_WidthByte32*j+i*3+2] = r2;
}
}
}
//////////////////////////////////////////////
//////////////////////////////////////////////
// ALPHA
//////////////////////////////////////////////
//////////////////////////////////////////////
//********************************************
// SetAlphaLayer
//********************************************
int Texture::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 Texture::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)
{
//TRACE("Texture::AddAlphaLayer : insufficiant memory");
return 0;
}
// Fill new data
int size = m_Width * m_Height;
int BytePerPixel = m_Depth / 8;
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;
}
//********************************************
// SetAlpha
// From RGB to grey scales, then alpha layer
//********************************************
int Texture::SetAlphaLayer(Texture *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();
int size = m_Width * m_Height;
int BytePerPixel = pTexture->GetDepth() / 8;
for(int i=0;i<size;i++)
m_pData[4*i+3] = (unsigned char)((int)pData[BytePerPixel*i+0]+
(int)pData[BytePerPixel*i+1]+
(int)pData[BytePerPixel*i+2])/3;
return 1;
}
//////////////////////////////////////////////
//////////////////////////////////////////////
// DISPLAY
//////////////////////////////////////////////
//////////////////////////////////////////////
//********************************************
// ReadBuffer
//********************************************
int Texture::ReadBuffer(unsigned char *buffer,
int width,
int height,
int depth)
{
if(buffer == NULL)
return 0;
if(!Alloc(width,height,depth))
return 0;
int BytePerPixel = depth / 8;
for(int j=0;j<height;j++)
for(int i=0;i<width;i++)
for(int k=0;k<BytePerPixel;k++)
m_pData[m_WidthByte32*j + i*BytePerPixel+k] =
buffer[(width*j+i)*BytePerPixel+k];
return 1;
}
//********************************************
// ReadBufferByte32
//********************************************
int Texture::ReadBufferByte32(unsigned char *pData,
int width,
int height)
{
// alloc 32 bits buffer
if(!Alloc(width,height,32))
return 0;
if(pData == NULL)
return 0;
memcpy(m_pData,pData,height*m_WidthByte32);
return 1;
}
//***************************************
// Copy
//***************************************
void Texture::Copy(Texture *pTexture)
{
unsigned char *pBuffer = pTexture->GetData();
if(pBuffer == NULL)
return;
unsigned int width = pTexture->GetWidth();
unsigned int height = pTexture->GetHeight();
unsigned int depth = pTexture->GetDepth();
if(!Alloc(width,height,depth))
return;
unsigned int BytePerPixel = depth / 8;
for(unsigned int j=0;j<height;j++)
for(unsigned int i=0;i<width;i++)
for(unsigned int k=0;k<BytePerPixel;k++)
m_pData[m_WidthByte32*j + i*BytePerPixel+k] =
pBuffer[(width*j+i)*BytePerPixel+k];
}
//********************************************
// ReadBuffer
//********************************************
int Texture::ReadBuffer(float *buffer,
int width,
int height,
int depth)
{
if(buffer == NULL)
return 0;
if(!Alloc(width,height,depth))
return 0;
int BytePerPixel = depth / 8;
for(int j=0;j<height;j++)
for(int i=0;i<width;i++)
for(int k=0;k<BytePerPixel;k++)
m_pData[m_WidthByte32*j + i*BytePerPixel+k] =
(unsigned char)(255.0f * buffer[(width*j+i)*BytePerPixel+k]);
return 1;
}
//********************************************
// ReadBuffer
//********************************************
int Texture::ReadBuffer(float **ppBuffer,
int width,
int height,
float ratio)
{
if(ppBuffer == NULL)
return 0;
if(!Alloc(width,height,24))
return 0;
for(int j=0;j<height;j++)
for(int i=0;i<width;i++)
{
m_pData[m_WidthByte32*j + i*3] = (unsigned char)(ratio*ppBuffer[j][i]);
m_pData[m_WidthByte32*j + i*3+1] = (unsigned char)(ratio*ppBuffer[j][i]);
m_pData[m_WidthByte32*j + i*3+2] = (unsigned char)(ratio*ppBuffer[j][i]);
}
return 1;
}
//********************************************
// WriteBuffer
//********************************************
int Texture::WriteBuffer(float **ppBuffer,
int width,
int height)
{
if(ppBuffer == NULL)
return 0;
for(int j=0;j<height;j++)
for(int i=0;i<width;i++) // only first channel
ppBuffer[j][i] = m_pData[m_WidthByte32*j + i*3];
return 1;
}
//********************************************
// WriteBuffer32
//********************************************
int Texture::WriteBuffer32(float **ppBuffer,
int width,
int height)
{
if(ppBuffer == NULL)
return 0;
//ASSERT(m_Depth == 32);
unsigned int r,g,b;
int tmp;
for(int j=0;j<height;j++)
{
tmp = m_WidthByte32*j;
for(int i=0;i<width;i++) // from 3 channels
{
b = m_pData[tmp + i*4];
g = m_pData[tmp + i*4+1];
r = m_pData[tmp + i*4+2];
unsigned int value = (r << 16) + (g << 8) + b;
ppBuffer[j][i] = (float)value;
}
}
return 1;
}
//********************************************
// ReadBuffer
//********************************************
int Texture::ReadBuffer(double *buffer,
int width,
int height,
int depth)
{
if(buffer == NULL)
return 0;
if(!Alloc(width,height,depth))
return 0;
int BytePerPixel = depth / 8;
for(int j=0;j<height;j++)
for(int i=0;i<width;i++)
{
m_pData[m_WidthByte32*j + i*BytePerPixel] = (unsigned char)buffer[width*j+i];
m_pData[m_WidthByte32*j + i*BytePerPixel+1] = (unsigned char)buffer[width*j+i];
m_pData[m_WidthByte32*j + i*BytePerPixel+2] = (unsigned char)buffer[width*j+i];
}
return 1;
}
//********************************************
// Grey
//********************************************
int Texture::Grey(unsigned int x, unsigned int y)
{
int BytePerPixel = m_Depth / 8;
// Grey scale
if(BytePerPixel == 1)
return (int)m_pData[m_WidthByte32*y + x];
else // 24 or 32 bits (alpha layer)
return (int)((int)m_pData[m_WidthByte32*y + x*BytePerPixel+0]+
(int)m_pData[m_WidthByte32*y + x*BytePerPixel+1]+
(int)m_pData[m_WidthByte32*y + x*BytePerPixel+2])/3;
}
//********************************************
// Color
//********************************************
void Texture::Color(unsigned int x, unsigned int y,
unsigned char *pRed, unsigned char *pGreen, unsigned char *pBlue)
{
int BytePerPixel = m_Depth / 8;
// Grey scale
if(BytePerPixel == 1)
{
*pRed = m_pData[m_WidthByte32*y + x];
*pGreen = m_pData[m_WidthByte32*y + x];
*pBlue = m_pData[m_WidthByte32*y + x];
}
else // 24 or 32 bits (alpha layer)
{
*pRed = m_pData[m_WidthByte32*y + x*BytePerPixel];
*pGreen = m_pData[m_WidthByte32*y + x*BytePerPixel+1];
*pBlue = m_pData[m_WidthByte32*y + x*BytePerPixel+2];
}
}
void Texture::GenerateMirrorV(unsigned int width,
unsigned int height,
unsigned char r,
unsigned char g,
unsigned char b,
unsigned char rb,
unsigned char gb,
unsigned char bb)
{
Alloc(width,height,24);
for(unsigned j=0;j<height;j++)
for(unsigned int i=0;i<width/4;i++)
{
m_pData[m_WidthByte32*j + i*3] = r;
m_pData[m_WidthByte32*j + i*3+1] = g;
m_pData[m_WidthByte32*j + i*3+2] = b;
}
for(unsigned j=0;j<height;j++)
for(unsigned int i=width/4;i<3*width/4;i++)
{
m_pData[m_WidthByte32*j + i*3] = rb;
m_pData[m_WidthByte32*j + i*3+1] = gb;
m_pData[m_WidthByte32*j + i*3+2] = bb;
}
for(unsigned j=0;j<height;j++)
for(unsigned int i=3*width/4;i<width;i++)
{
m_pData[m_WidthByte32*j + i*3] = r;
m_pData[m_WidthByte32*j + i*3+1] = g;
m_pData[m_WidthByte32*j + i*3+2] = b;
}
}
void Texture::GenerateMirrorH(unsigned int width,
unsigned int height,
unsigned char r,
unsigned char g,
unsigned char b,
unsigned char rb,
unsigned char gb,
unsigned char bb)
{
Alloc(width,height,24);
for(unsigned j=0;j<height/4;j++)
for(unsigned int i=0;i<width;i++)
{
m_pData[m_WidthByte32*j + i*3] = r;
m_pData[m_WidthByte32*j + i*3+1] = g;
m_pData[m_WidthByte32*j + i*3+2] = b;
}
for(unsigned j=height/4;j<3*height/4;j++)
for(unsigned int i=0;i<width;i++)
{
m_pData[m_WidthByte32*j + i*3] = rb;
m_pData[m_WidthByte32*j + i*3+1] = gb;
m_pData[m_WidthByte32*j + i*3+2] = bb;
}
for(unsigned j=3*height/4;j<height;j++)
for(unsigned int i=0;i<width;i++)
{
m_pData[m_WidthByte32*j + i*3] = r;
m_pData[m_WidthByte32*j + i*3+1] = g;
m_pData[m_WidthByte32*j + i*3+2] = b;
}
}
void Texture::GenerateCheckerBoard(unsigned int width,
unsigned int height,
int size,
unsigned char r,
unsigned char g,
unsigned char b,
unsigned char rb,
unsigned char gb,
unsigned char bb)
{
Alloc(width,height,24);
for(unsigned j=0;j<height;j++)
for(unsigned int i=0;i<width;i++)
{
int h = (int)((double)i/(double)size);
int v = (int)((double)j/(double)size);
bool h_odd = (h%2) == 0;
bool v_odd = (v%2) == 0;
if((h_odd + v_odd)%2 == 0)
{
m_pData[m_WidthByte32*j + i*3] = rb;
m_pData[m_WidthByte32*j + i*3+1] = gb;
m_pData[m_WidthByte32*j + i*3+2] = bb;
}
else
{
m_pData[m_WidthByte32*j + i*3] = r;
m_pData[m_WidthByte32*j + i*3+1] = g;
m_pData[m_WidthByte32*j + i*3+2] = b;
}
}
}
void Texture::GenerateVStripes(unsigned int width,
unsigned int height,
int size,
unsigned char r,
unsigned char g,
unsigned char b,
unsigned char rb,
unsigned char gb,
unsigned char bb)
{
Alloc(width,height,24);
for(unsigned j=0;j<height;j++)
for(unsigned int i=0;i<width;i++)
{
int h = (int)((double)i/(double)size);
bool h_odd = (h%2) == 0;
if(h_odd)
{
m_pData[m_WidthByte32*j + i*3] = rb;
m_pData[m_WidthByte32*j + i*3+1] = gb;
m_pData[m_WidthByte32*j + i*3+2] = bb;
}
else
{
m_pData[m_WidthByte32*j + i*3] = r;
m_pData[m_WidthByte32*j + i*3+1] = g;
m_pData[m_WidthByte32*j + i*3+2] = b;
}
}
}
void Texture::GenerateHStripes(unsigned int width,
unsigned int height,
int size,
unsigned char r,
unsigned char g,
unsigned char b,
unsigned char rb,
unsigned char gb,
unsigned char bb)
{
Alloc(width,height,24);
for(unsigned j=0;j<height;j++)
for(unsigned int i=0;i<width;i++)
{
int v = (int)((double)j/(double)size);
bool v_odd = (v%2) == 0;
if(v_odd)
{
m_pData[m_WidthByte32*j + i*3] = rb;
m_pData[m_WidthByte32*j + i*3+1] = gb;
m_pData[m_WidthByte32*j + i*3+2] = bb;
}
else
{
m_pData[m_WidthByte32*j + i*3] = r;
m_pData[m_WidthByte32*j + i*3+1] = g;
m_pData[m_WidthByte32*j + i*3+2] = b;
}
}
}
//***************************************
// GenerateGrid
//***************************************
void Texture::GenerateGrid(unsigned int width,
unsigned int height,
int /*size*/,
unsigned int thickness,
unsigned char r,
unsigned char g,
unsigned char b,
unsigned char rb,
unsigned char gb,
unsigned char bb)
{
Alloc(width,height,24);
// fill background
unsigned int i,j;
for(j=0;j<height;j++)
for(i=0;i<width;i++)
{
m_pData[m_WidthByte32*j + i*3] = rb;
m_pData[m_WidthByte32*j + i*3+1] = gb;
m_pData[m_WidthByte32*j + i*3+2] = bb;
}
// horizontal
for(j=height/2-thickness/2;j<height/2+thickness/2;j++)
{
for(i=0;i<width;i++)
{
m_pData[m_WidthByte32*j + i*3] = r;
m_pData[m_WidthByte32*j + i*3+1] = g;
m_pData[m_WidthByte32*j + i*3+2] = b;
}
}
// vertical
for(unsigned int i=width/2-thickness/2;i<width/2+thickness/2;i++)
for(unsigned int j=0;j<height;j++)
{
m_pData[m_WidthByte32*j + i*3] = r;
m_pData[m_WidthByte32*j + i*3+1] = g;
m_pData[m_WidthByte32*j + i*3+2] = b;
}
}
void Texture::GenerateGradientH(unsigned int width,
unsigned int height,
int /*size*/)
{
Alloc(width,height,24);
// fill background
for(unsigned int i=0;i<width;i++)
{
unsigned char g = (unsigned char)(255.0 * (double)i / (double)(width-1));
for(unsigned int j=0;j<height;j++)
{
m_pData[m_WidthByte32*j + i*3] = g;
m_pData[m_WidthByte32*j + i*3+1] = g;
m_pData[m_WidthByte32*j + i*3+2] = g;
}
}
}
void Texture::GenerateGradientV(unsigned int width,
unsigned int height,
int /*size*/)
{
Alloc(width,height,24);
// fill background
for(unsigned int j=0;j<height;j++)
{
unsigned char g = (unsigned char)(255.0 * (double)j / (double)(height-1));
for(unsigned int i=0;i<width;i++)
{
m_pData[m_WidthByte32*j + i*3] = g;
m_pData[m_WidthByte32*j + i*3+1] = g;
m_pData[m_WidthByte32*j + i*3+2] = g;
}
}
}
//***************************************
// GenerateLines
//***************************************
void Texture::GenerateLines(unsigned int width,
unsigned int height,
int size,
unsigned char r,
unsigned char g,
unsigned char b,
unsigned char rb,
unsigned char gb,
unsigned char bb)
{
Alloc(width,height,24);
// fill background
unsigned int i,j;
for(j=0;j<height;j++)
for(i=0;i<width;i++)
{
m_pData[m_WidthByte32*j + i*3] = rb;
m_pData[m_WidthByte32*j + i*3+1] = gb;
m_pData[m_WidthByte32*j + i*3+2] = bb;
}
// horizontal zebra
for(j=0;j<height;j++)
{
if((j/size)%2 == 0)
for(i=0;i<width;i++)
{
m_pData[m_WidthByte32*j + i*3] = r;
m_pData[m_WidthByte32*j + i*3+1] = g;
m_pData[m_WidthByte32*j + i*3+2] = b;
}
}
}
// ** EOF **
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