123
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romkazvo
379
CryFont/GlyphBitmap.cpp
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379
CryFont/GlyphBitmap.cpp
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//-------------------------------------------------------------------------------------------------
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// Author: M<>rcio Martins
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//
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// Purpose:
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// - Hold a glyph bitmap and blit it to the main texture
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//
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// History:
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// - [6/6/2003] created the file
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//
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//-------------------------------------------------------------------------------------------------
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#include "StdAfx.h"
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#include "GlyphBitmap.h"
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#include <memory.h>
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#include <math.h>
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//-------------------------------------------------------------------------------------------------
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CGlyphBitmap::CGlyphBitmap()
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:m_iWidth(0), m_iHeight(0), m_pBuffer(0)
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{
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}
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//-------------------------------------------------------------------------------------------------
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CGlyphBitmap::~CGlyphBitmap()
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{
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}
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//-------------------------------------------------------------------------------------------------
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int CGlyphBitmap::Create(int iWidth, int iHeight)
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{
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Release();
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m_pBuffer = new unsigned char[iWidth * iHeight];
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if (!m_pBuffer)
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{
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return 0;
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}
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m_iWidth = iWidth;
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m_iHeight = iHeight;
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return 1;
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}
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//-------------------------------------------------------------------------------------------------
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int CGlyphBitmap::Release()
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{
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if (m_pBuffer)
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{
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delete[] m_pBuffer;
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}
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m_pBuffer = 0;
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m_iWidth = m_iHeight = 0;
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return 1;
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}
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//-------------------------------------------------------------------------------------------------
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int CGlyphBitmap::Blur(int iIterations)
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{
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int cSum;
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int yOffset;
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int yupOffset;
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int ydownOffset;
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for (int i = 0; i < iIterations; i++)
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{
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for (int y = 0; y < m_iHeight; y++)
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{
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yOffset = y * m_iWidth;
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if (y - 1 >= 0)
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{
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yupOffset = (y-1) * m_iWidth;
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}
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else
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{
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yupOffset = (y) * m_iWidth;
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}
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if (y + 1 < m_iHeight)
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{
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ydownOffset = (y+1) * m_iWidth;
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}
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else
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{
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ydownOffset = (y) * m_iWidth;
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}
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for (int x = 0; x < m_iWidth; x++)
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{
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cSum = m_pBuffer[yupOffset + x] + m_pBuffer[ydownOffset + x];
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if (x - 1 >= 0)
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{
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cSum += m_pBuffer[yOffset + x - 1];
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}
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else
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{
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cSum += m_pBuffer[yOffset + x];
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}
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if (x + 1 < m_iWidth)
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{
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cSum += m_pBuffer[yOffset + x + 1];
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}
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else
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{
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cSum += m_pBuffer[yOffset + x];
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}
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m_pBuffer[yOffset + x] = cSum >> 2;
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}
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}
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}
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return 1;
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}
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//-------------------------------------------------------------------------------------------------
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int CGlyphBitmap::Scale(float fScaleX, float fScaleY)
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{
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int iNewWidth = (int)(m_iWidth * fScaleX);
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int iNewHeight = (int)(m_iHeight * fScaleY);
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unsigned char *pNewBuffer = new unsigned char[iNewWidth * iNewHeight];
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if (!pNewBuffer)
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{
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return 0;
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}
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float xFactor = m_iWidth / (float)iNewWidth;
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float yFactor = m_iHeight / (float)iNewHeight;
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float xFractioned, yFractioned, xFraction, yFraction, oneMinusX, oneMinusY, fR0, fR1;
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int xCeil, yCeil, xFloor, yFloor, yNewOffset;
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unsigned char c0, c1, c2, c3;
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for (int y = 0; y < iNewHeight; ++y)
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{
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yFractioned = y * yFactor;
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yFloor = (int)cry_floorf(yFractioned);
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yCeil = yFloor + 1;
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if (yCeil >= m_iHeight)
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{
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yCeil = yFloor;
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}
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yFraction = yFractioned - yFloor;
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oneMinusY = 1.0f - yFraction;
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yNewOffset = y * iNewWidth;
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for (int x = 0; x < iNewWidth; ++x)
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{
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xFractioned = x * xFactor;
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xFloor = (int)cry_floorf(xFractioned);
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xCeil = xFloor + 1;
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if (xCeil >= m_iWidth)
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{
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xCeil = xFloor;
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}
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xFraction = xFractioned - xFloor;
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oneMinusX = 1.0f - xFraction;
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c0 = m_pBuffer[yFloor * m_iWidth + xFloor];
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c1 = m_pBuffer[yFloor * m_iWidth + xCeil];
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c2 = m_pBuffer[yCeil * m_iWidth + xFloor];
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c3 = m_pBuffer[yCeil * m_iWidth + xCeil];
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fR0 = (oneMinusX * c0 + xFraction * c1);
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fR1 = (oneMinusX * c2 + xFraction * c3);
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pNewBuffer[yNewOffset + x] = (unsigned char)((oneMinusY * fR0) + (yFraction * fR1));
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}
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}
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m_iWidth = iNewWidth;
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m_iHeight = iNewHeight;
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delete[] m_pBuffer;
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m_pBuffer = pNewBuffer;
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return 1;
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}
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//-------------------------------------------------------------------------------------------------
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int CGlyphBitmap::Clear()
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{
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memset(m_pBuffer, 0, m_iWidth * m_iHeight);
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return 1;
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}
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//-------------------------------------------------------------------------------------------------
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int CGlyphBitmap::BlitTo8(unsigned char *pBuffer, int iSrcX, int iSrcY, int iSrcWidth, int iSrcHeight, int iDestX, int iDestY, int iDestWidth)
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{
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int ySrcOffset, yDestOffset;
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for (int y = 0; y < iSrcHeight; y++)
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{
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ySrcOffset = (iSrcY + y) * m_iWidth;
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yDestOffset = (iDestY + y) * iDestWidth;
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for (int x = 0; x < iSrcWidth; x++)
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{
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pBuffer[yDestOffset + iDestX + x] = m_pBuffer[ySrcOffset + iSrcX + x];
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}
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}
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return 1;
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}
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//-------------------------------------------------------------------------------------------------
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int CGlyphBitmap::BlitTo32(unsigned int *pBuffer, int iSrcX, int iSrcY, int iSrcWidth, int iSrcHeight, int iDestX, int iDestY, int iDestWidth)
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{
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int ySrcOffset, yDestOffset;
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char cColor;
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for (int y = 0; y < iSrcHeight; y++)
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{
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ySrcOffset = (iSrcY + y) * m_iWidth;
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yDestOffset = (iDestY + y) * iDestWidth;
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for (int x = 0; x < iSrcWidth; x++)
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{
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cColor = m_pBuffer[ySrcOffset + iSrcX + x];
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pBuffer[yDestOffset + iDestX + x] = (cColor << 24) | (255 << 16) | (255 << 8) | 255;
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}
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}
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return 1;
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}
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//-------------------------------------------------------------------------------------------------
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int CGlyphBitmap::BlitScaledTo8(unsigned char *pBuffer, int iSrcX, int iSrcY, int iSrcWidth, int iSrcHeight, int iDestX, int iDestY, int iDestWidth, int iDestHeight, int iDestBufferWidth)
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{
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int iNewWidth = (int)iDestWidth;
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int iNewHeight = (int)iDestHeight;
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unsigned char *pNewBuffer = pBuffer;
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float xFactor = iSrcWidth / (float)iNewWidth;
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float yFactor = iSrcHeight / (float)iNewHeight;
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float xFractioned, yFractioned, xFraction, yFraction, oneMinusX, oneMinusY, fR0, fR1;
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int xCeil, yCeil, xFloor, yFloor, yNewOffset;
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unsigned char c0, c1, c2, c3;
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for (int y = 0; y < iNewHeight; ++y)
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{
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yFractioned = y * yFactor;
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yFloor = (int)cry_floorf(yFractioned);
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yCeil = yFloor + 1;
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yFraction = yFractioned - yFloor;
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oneMinusY = 1.0f - yFraction;
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yNewOffset = y * iDestBufferWidth;
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yFloor += iSrcY;
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yCeil += iSrcY;
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if (yCeil >= m_iHeight)
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{
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yCeil = yFloor;
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}
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for (int x = 0; x < iNewWidth; ++x)
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{
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xFractioned = x * xFactor;
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xFloor = (int)cry_floorf(xFractioned);
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xCeil = xFloor + 1;
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xFraction = xFractioned - xFloor;
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oneMinusX = 1.0f - xFraction;
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xFloor += iSrcY;
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xCeil += iSrcY;
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if (xCeil >= m_iWidth)
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{
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xCeil = xFloor;
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}
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c0 = m_pBuffer[yFloor * m_iWidth + xFloor];
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c1 = m_pBuffer[yFloor * m_iWidth + xCeil];
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c2 = m_pBuffer[yCeil * m_iWidth + xFloor];
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c3 = m_pBuffer[yCeil * m_iWidth + xCeil];
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fR0 = (oneMinusX * c0 + xFraction * c1);
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fR1 = (oneMinusX * c2 + xFraction * c3);
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pNewBuffer[yNewOffset + x + iDestX] = (unsigned char)((oneMinusY * fR0) + (yFraction * fR1));
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}
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}
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return 1;
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}
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//-------------------------------------------------------------------------------------------------
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int CGlyphBitmap::BlitScaledTo32(unsigned char *pBuffer, int iSrcX, int iSrcY, int iSrcWidth, int iSrcHeight, int iDestX, int iDestY, int iDestWidth, int iDestHeight, int iDestBufferWidth)
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{
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int iNewWidth = (int)iDestWidth;
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int iNewHeight = (int)iDestHeight;
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unsigned char *pNewBuffer = pBuffer;
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float xFactor = iSrcWidth / (float)iNewWidth;
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float yFactor = iSrcHeight / (float)iNewHeight;
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float xFractioned, yFractioned, xFraction, yFraction, oneMinusX, oneMinusY, fR0, fR1;
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int xCeil, yCeil, xFloor, yFloor, yNewOffset;
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unsigned char c0, c1, c2, c3, cColor;
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for (int y = 0; y < iNewHeight; ++y)
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{
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yFractioned = y * yFactor;
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yFloor = (int)cry_floorf(yFractioned);
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yCeil = yFloor + 1;
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yFraction = yFractioned - yFloor;
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oneMinusY = 1.0f - yFraction;
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yNewOffset = y * iDestBufferWidth;
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yFloor += iSrcY;
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yCeil += iSrcY;
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if (yCeil >= m_iHeight)
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{
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yCeil = yFloor;
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}
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for (int x = 0; x < iNewWidth; ++x)
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{
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xFractioned = x * xFactor;
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xFloor = (int)cry_floorf(xFractioned);
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xCeil = xFloor + 1;
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xFraction = xFractioned - xFloor;
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oneMinusX = 1.0f - xFraction;
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xFloor += iSrcY;
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xCeil += iSrcY;
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if (xCeil >= m_iWidth)
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{
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xCeil = xFloor;
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}
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c0 = m_pBuffer[yFloor * m_iWidth + xFloor];
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c1 = m_pBuffer[yFloor * m_iWidth + xCeil];
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c2 = m_pBuffer[yCeil * m_iWidth + xFloor];
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c3 = m_pBuffer[yCeil * m_iWidth + xCeil];
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fR0 = (oneMinusX * c0 + xFraction * c1);
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fR1 = (oneMinusX * c2 + xFraction * c3);
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cColor = (unsigned char)((oneMinusY * fR0) + (yFraction * fR1));
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pNewBuffer[yNewOffset + x + iDestX] = 0xffffff | (cColor << 24);
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}
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}
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return 1;
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}
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//-------------------------------------------------------------------------------------------------
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