src/sdl/utility.cpp

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