141 lines
4.2 KiB
Plaintext
141 lines
4.2 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(float baseL, float innerL,float pointL, float *pBaseR, float *pInnerR, float *pPointR) {
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int totalL=baseL;
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if (innerL>baseL) {
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if (innerL>pointL)
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totalL = (2*innerL-baseL);
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else {
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totalL = (innerL+pointL-baseL);
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}
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} else {
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if (pointL>innerL)
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totalL = baseL-innerL+pointL;
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}
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int totalR = 320;
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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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*pInnerR = totalR / totalL * innerL;
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*pPointR = totalR / totalL * pointL;
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}
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int main() {
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float baseL=6;
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float innerL=3;
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float pointL=6;
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float baseR,innerR,pointR;
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int cx=350,cy=350;
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float speed = 1;
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Color trackColor = BLUE;
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updateRadius(baseL, innerL, pointL, &baseR, &innerR, &pointR);
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InitWindow(1100,700,"Hypotrochoid");
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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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bool skip=true;
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lasty=cy;
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lastx=cx+baseR;
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int frameCount = 0;
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while(!WindowShouldClose()) {
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//GUI
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float newInnerL = innerL, newBaseL = baseL, newPointL = pointL;
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GuiSliderBar((Rectangle){ 70, 20, 200, 30 },"Inner",TextFormat("%i", (int)innerL), &newInnerL, 1, 50);
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GuiSliderBar((Rectangle){ 70, 60, 200, 30 },"Base",TextFormat("%i", (int)baseL), &newBaseL, 1, 50);
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GuiSliderBar((Rectangle){ 70, 100, 200, 30 },"Point",TextFormat("%i", (int)pointL), &newPointL, 1, 50);
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GuiSliderBar((Rectangle){ 70, 150, 200, 30 },"Speed",TextFormat("%i", (int)speed), &speed, 1, 50);
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GuiLabel((Rectangle){ 20, 220, 200, 30 },TextFormat("Color: 0x%02X%02X%02X ",(int)(trackColor.r), (int)(trackColor.g),(int)(trackColor.b)));
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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 (newInnerL!=innerL || newBaseL!=baseL || newPointL!=pointL) {
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if (newInnerL!=innerL)
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pointL=newInnerL;
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else
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pointL=newPointL;
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innerL=newInnerL;
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baseL=newBaseL;
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updateRadius(baseL, innerL, pointL, &baseR, &innerR, &pointR);
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r=0;
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skip=true;
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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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float innerCX=cx+ (baseR-innerR)*cos(r);
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float innerCY=cy+ (baseR-innerR)*sin(r);
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int x,y;
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float theta;
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if (innerL<baseL) {
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theta = r * (baseL-innerL) / innerL;
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x=round(innerCX + pointR * cos(theta));
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y=round(innerCY - pointR * sin(theta));
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} else {
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theta = r * (innerL-baseL) / innerL;
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x=round(innerCX + pointR * cos(theta));
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y=round(innerCY + pointR * sin(theta));
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}
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//update image (in CPU)
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//ImageClearBackground(&trackImage,WHITE);
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if (!skip)
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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,innerCX,innerCY,innerR,1,LIGHTGRAY);
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ImageDrawLineEx(&circlesImage,innerCX,innerCY,cx,cy,1,LIGHTRED);
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ImageDrawLineEx(&circlesImage,innerCX,innerCY,x,y,1,LIGHTGRAY);
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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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skip=false;
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r+=0.01;
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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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} |