src/graphics/Texture.cpp

   1 /*
   2  * Texture.cpp
   3  *
   4  *  Created on: Oct 21, 2012
   5  *      Author: holy
   6  */
   7
   8 #include "Texture.h"
   9
  10 #include "../sdl/utility.h"
  11
  12 using geometry::Vector;
  13
  14 namespace graphics {
  15
  16 Texture::Texture()
  17 : surface(0) {
  18
  19 }
  20
  21 Texture::~Texture() {
  22
  23 }
  24
  25
  26 void Texture::Render(SDL_Surface *dest, const Vector<int> &from, const Vector<int> &to) const {
  27         SDL_Rect destRect;
  28         destRect.x = from.X();
  29         destRect.y = from.Y();
  30         if (!surface || size == Vector<int>()) {
  31                 destRect.w = to.X() - from.X();
  32                 destRect.h = to.Y() - from.Y();
  33                 SDL_FillRect(dest, &destRect, SDL_MapRGB(dest->format, 0xFF, 0x00, 0x00));
  34                 return;
  35         }
  36
  37         SDL_Rect srcRect;
  38         srcRect.x = offset.X();
  39         srcRect.y = offset.Y();
  40
  41         for (destRect.y = from.Y(); destRect.y < to.Y(); destRect.y += size.Y()) {
  42                 srcRect.h = size.Y();
  43                 destRect.h = size.Y();
  44                 if (destRect.y + destRect.h > to.Y()) {
  45                         srcRect.h = to.Y() - destRect.y;
  46                         destRect.h = to.Y() - destRect.y;
  47                 }
  48                 for (destRect.x = from.X(); destRect.x < to.X(); destRect.x += size.X()) {
  49                         srcRect.w = size.X();
  50                         destRect.w = size.X();
  51                         if (destRect.x + destRect.w > to.X()) {
  52                                 srcRect.w = to.X() - destRect.x;
  53                                 destRect.w = to.X() - destRect.x;
  54                         }
  55                         SDL_BlitSurface(surface, &srcRect, dest, &destRect);
  56                 }
  57         }
  58 }
  59
  60 }