src/sdl/utility.cpp

   1 /*
   2   * utility.cpp
   3  *
   4  *  Created on: Oct 6, 2012
   5  *      Author: holy
   6  */
   7
   8 #include "utility.h"
   9
  10 #include <cmath>
  11
  12 using geometry::Vector;
  13
  14 namespace sdl {
  15
  16 void HorizontalLine(SDL_Surface *dst, const Vector<int> &position, unsigned int length, Uint32 color) {
  17         SDL_Rect destRect;
  18         destRect.x = position.X();
  19         destRect.y = position.Y();
  20         destRect.w = length;
  21         destRect.h = 1;
  22         SDL_FillRect(dst, &destRect, color);
  23 }
  24
  25 void VerticalLine(SDL_Surface *dst, const geometry::Vector<int> &position, unsigned int length, Uint32 color) {
  26         SDL_Rect destRect;
  27         destRect.x = position.X();
  28         destRect.y = position.Y();
  29         destRect.w = 1;
  30         destRect.h = length;
  31         SDL_FillRect(dst, &destRect, color);
  32 }
  33
  34
  35 void OutlineRect(SDL_Surface *dst, const Vector<int> &from, const Vector<int> &to, Uint32 color) {
  36         SDL_Rect destRect;
  37         destRect.x = std::min(from.X(), to.X());
  38         destRect.y = std::min(from.Y(), to.Y());
  39         destRect.w = std::abs(from.X() - to.X());
  40         destRect.h = std::abs(from.Y() - to.Y());
  41         OutlineRect(dst, &destRect, color);
  42 }
  43
  44 void OutlineRect(SDL_Surface *dst, SDL_Rect *dstrect, Uint32 color) {
  45         SDL_Rect destRect;
  46         destRect.x = dstrect->x;
  47         destRect.y = dstrect->y;
  48         destRect.w = dstrect->w;
  49         destRect.h = 1;
  50         SDL_FillRect(dst, &destRect, color);
  51         destRect.y += dstrect->h - 1;
  52         SDL_FillRect(dst, &destRect, color);
  53         destRect.y = dstrect->y;
  54         destRect.w = 1;
  55         destRect.h = dstrect->h;
  56         SDL_FillRect(dst, &destRect, color);
  57         destRect.x += dstrect->w - 1;
  58         SDL_FillRect(dst, &destRect, color);
  59 }
  60
  61 }