diff options
Diffstat (limited to 'SDLParametric2.cpp')
| -rw-r--r-- | SDLParametric2.cpp | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/SDLParametric2.cpp b/SDLParametric2.cpp new file mode 100644 index 000000000000..f4ec664a19c0 --- /dev/null +++ b/SDLParametric2.cpp @@ -0,0 +1,29 @@ +#include "./SDLParametric2.h" + +SDL_Parametric2::SDL_Parametric2(int _width, int _height, std::vector<std::string> _equations) : + SDL_Cartesian(_width,_height,_equations) +{ + printf("Starting Equation Transfer...\n"); + equations.push_back(_equations[0]); + equations.push_back(_equations[1]); + printf("Finished Equation Transfer.\n"); + for(int c = 0; c < 2; c++) + { + rpnequations.push_back(Math::infixToRPN(equations[c])); + } + printf("Finished Equation Conversion.\n"); + tmin = -32 * M_PI; + tmax = 32 * M_PI; +} + +void SDL_Parametric2::render() +{ + last = {Math::evaluateRPN(rpnequations[0],tmin,false) * xScale + width/2 - xOffset, -Math::evaluateRPN(rpnequations[1],tmin,false) * yScale +height/2 - yOffset}; + + for(double t = tmin; t < tmax; t += 0.1) + { + next = {Math::evaluateRPN(rpnequations[0],t,false) * xScale + width/2 - xOffset, -Math::evaluateRPN(rpnequations[1],t,false) * yScale + height/2 - yOffset}; + if(t != tmin) SDL_RenderDrawLine(renderer,last.x,last.y,next.x,next.y); + last = next; + } +} |