@shopify/react-native-skia
Version:
High-performance React Native Graphics using Skia
43 lines (37 loc) • 830 B
JavaScript
export const canvas2Cartesian = (v, center) => {
"worklet";
return {
x: v.x - center.x,
y: -1 * (v.y - center.y)
};
};
export const cartesian2Canvas = (v, center) => {
"worklet";
return {
x: v.x + center.x,
y: -1 * v.y + center.y
};
};
export const cartesian2Polar = v => {
"worklet";
return {
theta: Math.atan2(v.y, v.x),
radius: Math.sqrt(v.x ** 2 + v.y ** 2)
};
};
export const polar2Cartesian = p => {
"worklet";
return {
x: p.radius * Math.cos(p.theta),
y: p.radius * Math.sin(p.theta)
};
};
export const polar2Canvas = (p, center) => {
"worklet";
return cartesian2Canvas(polar2Cartesian(p), center);
};
export const canvas2Polar = (v, center) => {
"worklet";
return cartesian2Polar(canvas2Cartesian(v, center));
};
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