diff options
Diffstat (limited to 'SDLPolar.cpp')
| -rw-r--r-- | SDLPolar.cpp | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/SDLPolar.cpp b/SDLPolar.cpp new file mode 100644 index 000000000000..e28a487574aa --- /dev/null +++ b/SDLPolar.cpp @@ -0,0 +1,38 @@ +#include "./SDLPolar.h" + +void SDL_Polar::render() +{ + double r0 = Math::evaluateRPN(rpn[0],(-width/2),false) + (double)(height/2 - yOffset); + double x0 = r0; + double y0 = 0.0; + last = {x0,y0}; + for(int i = 0; i < functions.size(); i++) + { + switch(i) + { + case 0: + SDL_SetRenderDrawColor(renderer,0xFF,0xFF,0,0xFF); + break; + case 1: + SDL_SetRenderDrawColor(renderer,0xFF,0x22,0x22,0xFF); + break; + case 2: + SDL_SetRenderDrawColor(renderer,0x44,0x44,0xFF,0xFF); + break; + case 3: + SDL_SetRenderDrawColor(renderer,0xFF,0x66,0x00,0xFF); + break; + } + + for(double t = 0.0f; t <= 64 * M_PI; t += 0.1f) + { + r0 = Math::evaluateRPN(rpn[i],t,false); + //printf("%f\n",r0); + x0 = r0 * cos(t) * xScale; + y0 = r0 * sin(t) * yScale; + next = {x0 - xOffset + width/2, -y0 + height/2 - yOffset}; + if(t != 0.0)SDL_RenderDrawLine(renderer,last.x,last.y,next.x,next.y); + last = next; + } + } +} |