10 lines
No EOL
235 B
JavaScript
10 lines
No EOL
235 B
JavaScript
function rotatePoint(x, y, theta) {
|
|
var thetaRad = theta * 0.0174532925;
|
|
var rotX = Math.cos(thetaRad) * x - Math.sin(thetaRad) * y;
|
|
var rotY = Math.sin(thetaRad) * x + Math.cos(thetaRad) * y;
|
|
|
|
return {
|
|
x: rotX,
|
|
y: rotY,
|
|
};
|
|
} |