Skia Fiddle

Options

Width Height

check_box_outline_blank check_box Text Only [Use SkDebugf()]

check_box_outline_blank check_box sRGB

check_box_outline_blank check_box F16

check_box_outline_blank check_box Animation

check_box_outline_blank check_box Offscreen Render Target

Width Height Sample Count

check_box_outline_blank check_box Texturable

check_box_outline_blank check_box MipMap

This global is now defined:

GrBackendRenderTarget backEndRenderTarget;

GrBackendTexture backEndTextureRenderTarget;

Optional source image

check_box_outline_blank check_box MipMap

These globals are now defined:

SkBitmap source;
sk_sp<SkImage> image;
GrBackendTexture backEndTexture; // GPU Only.

Note:

Adding comments with SK_FOLD_START and SK_FOLD_END creates foldable code blocks.
These blocks will be folded by default and are useful for highlighting specific lines of code.
You can also use the keyboard shortcuts Ctrl+S and Ctrl+E in the code editor to set them.

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​
#include <math.h>
​
​
typedef struct Point {
    double x;
    double y;
} Point;
​
void move_point(Point *p, double angle, double len) {
    p->x += len*cos(2*3.14*angle/360.0); 
    p->y -= len*sin(2*3.14*angle/360.0);
}
​
void draw_point(Point *p, SkCanvas *canvas, SkPaint paint) {
    canvas->drawLine(p->x, p->y, p->x, p->y, paint);
}
​
​
​
​
void draw(SkCanvas* canvas) {
    canvas->drawColor(SK_ColorWHITE);
​
    SkPaint paint;
    paint.setStyle(SkPaint::kStroke_Style);
    paint.setStrokeWidth(10);
    paint.setColor(0xff4285F4);
    paint.setAntiAlias(true);
    paint.setStrokeCap(SkPaint::kRound_Cap);
  
    Point p = {
      .x = 500,
      .y = 500
    };
    
    draw_point(&p, canvas, paint);
    move_point(&p, 45, 300);
    draw_point(&p, canvas, paint);
  }