126 lines
3.9 KiB
Plaintext
126 lines
3.9 KiB
Plaintext
#include <raylib.h>
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#include <rdrawing.h>
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#include <math.h>
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#define RAYGUI_IMPLEMENTATION
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#include <raygui.h>
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void updateRadius(int baseL, int outerL, int pointL, int *pBaseR, int *pOuterR, int *pPointR) {
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int totalL=baseL+outerL;
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if (pointL>outerL)
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totalL+=pointL;
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else
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totalL+=outerL;
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int totalR = 340;
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int remainder = totalR % totalL;
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if (remainder!=0) {
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if (remainder < totalL / 2) {
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totalR -= remainder;
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} else {
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totalR += ( totalL - remainder);
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}
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}
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*pBaseR = (totalR) / totalL * baseL;
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*pOuterR = (totalR) / totalL * outerL;
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*pPointR = (totalR) / totalL * pointL;
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}
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int main() {
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int baseL=2;
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int outerL=13;
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int pointL=3;
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int baseR,outerR,pointR;
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int cx=350,cy=350;
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int speed = 1;
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Color trackColor = BLUE;
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updateRadius(baseL, outerL, pointL, &baseR, &outerR, & pointR);
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InitWindow(1000,700,"Epitrochoid");
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SetTraceLogLevel(LOG_WARNING);
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SetTargetFPS(60);
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GuiSetStyle(DEFAULT,TEXT_SIZE,20);
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Image trackImage=GenImageColor(700,700,WHITE);
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//border
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ImageFillRectangleEx(&trackImage,0,0,700,700,LIGHTGRAY);
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ImageFillRectangleEx(&trackImage,5,5,690,690,WHITE);
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Image circlesImage = GenImageColor(700,700,BLANK);
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float r=0;
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int lastx,lasty;
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lasty=cy;
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lastx=cx+(baseR+outerR-pointR);
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int frameCount = 0;
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while(!WindowShouldClose()) {
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//GUI
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int newOuterL = GuiSliderBar((Rectangle){ 70, 20, 200, 30 },"Outer",TextFormat("%i", (int)outerL), outerL, 1, 50);
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int newBaseL = GuiSliderBar((Rectangle){ 70, 60, 200, 30 },"Base",TextFormat("%i", (int)baseL), baseL, 1, 50);
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int newPointL = GuiSliderBar((Rectangle){ 70, 100, 200, 30 },"Point",TextFormat("%i", (int)pointL), pointL, 1, 50);
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speed = GuiSliderBar((Rectangle){ 70, 150, 200, 30 },"Speed",TextFormat("%i", (int)speed), speed, 1, 50);
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GuiLabel((Rectangle){ 20, 220, 80, 30 },TextFormat("Color: 0x%02X%02X%02X ",(int)(trackColor.r), (int)(trackColor.g),(int)(trackColor.b)));
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trackColor= GuiColorPicker((Rectangle){ 50, 250, 196, 192 }, NULL, trackColor);
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int doClear = GuiButton((Rectangle){ 120, 500, 80, 30 },"Clear");
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if (newOuterL!=outerL || newBaseL!=baseL || newPointL!=pointL) {
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if (newOuterL!=outerL)
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pointL=newOuterL;
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else
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pointL=newPointL;
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outerL=newOuterL;
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baseL=newBaseL;
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updateRadius(baseL, outerL, pointL, &baseR, &outerR, & pointR);
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lasty=cy;
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lastx=cx+(baseR+outerR-pointR);
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r=0;
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ImageClearBackground(&trackImage,WHITE);
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ImageFillRectangleEx(&trackImage,0,0,700,700,LIGHTGRAY);
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ImageFillRectangleEx(&trackImage,5,5,690,690,WHITE);
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} else if (doClear) {
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ImageClearBackground(&trackImage,WHITE);
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ImageFillRectangleEx(&trackImage,0,0,700,700,LIGHTGRAY);
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ImageFillRectangleEx(&trackImage,5,5,690,690,WHITE);
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}
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//update datas
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r+=0.01;
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float outerCX=cx+ (baseR+outerR)*cos(r);
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float outerCY=cy+ (baseR+outerR)*sin(r);
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float theta = r * (baseL+outerL) / outerL;
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int x=round(outerCX - pointR * cos(theta));
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int y=round(outerCY - pointR * sin(theta));
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//update image (in CPU)
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//ImageClearBackground(&trackImage,WHITE);
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ImageDrawLineEx(&trackImage,lastx,lasty,x,y,3,trackColor);
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frameCount++;
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if (frameCount>=speed) {
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ImageClearBackground(&circlesImage,BLANK);
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//base circle
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ImageDrawCircleEx(&circlesImage,cx,cy,baseR,1,LIGHTRED);
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ImageDrawCircleEx(&circlesImage,outerCX,outerCY,outerR,1,LIGHTSLATEGRAY);
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ImageDrawLineEx(&circlesImage,cx,cy,outerCX,outerCY,1,LIGHTRED);
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ImageDrawLineEx(&circlesImage,x,y,outerCX,outerCY,1,LIGHTSLATEGRAY);
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ImageDrawPointEx(&circlesImage,x,y,7,RED);
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//Drawing in GPU
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Texture trackTexture = LoadTextureFromImage(trackImage);
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Texture circlesTexture = LoadTextureFromImage(circlesImage);
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BeginDrawing();
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ClearBackground(WHITE);
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DrawTexture(trackTexture,300,0,WHITE);
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DrawTexture(circlesTexture,300,0,WHITE);
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EndDrawing();
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UnloadTexture(circlesTexture);
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UnloadTexture(trackTexture);
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frameCount=0;
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}
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lastx=x;
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lasty=y;
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}
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//Clean up
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UnloadImage(circlesImage);
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UnloadImage(trackImage);
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CloseWindow();
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}
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