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Added optimised point in circle test to CircleUtils

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Richard Davey
2013-07-27 10:57:54 +01:00
parent d80467a08a
commit 3038f6fcf8
6 changed files with 45 additions and 6 deletions
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Phaser/utils/CircleUtils.ts
+11 -2
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@@ -36,8 +36,17 @@ module Phaser {
* @return {Boolean} True if the coordinates are within this circle, otherwise false.
**/
static contains(a: Circle, x: number, y: number): bool {
//return (a.radius * a.radius >= Collision.distanceSquared(a.x, a.y, x, y));
return true;
// Check if x/y are within the bounds first
if (x >= a.left && x <= a.right && y >= a.top && y <= a.bottom)
{
var dx: number = (a.x - x) * (a.x - x);
var dy: number = (a.y - y) * (a.y - y);
return (dx + dy) <= (a.radius * a.radius);
}
return false;
}
/**
Phaser/utils/DebugUtils.ts
+8
View File
@@ -96,6 +96,14 @@ module Phaser {
}
static renderCircle(circle: Phaser.Circle, fillStyle: string = 'rgba(0,255,0,0.3)') {
DebugUtils.context.fillStyle = fillStyle;
DebugUtils.context.arc(circle.x, circle.y, circle.radius, 0, Math.PI * 2, false);
DebugUtils.context.fill();
}
static renderPhysicsBody(body: Phaser.Physics.Body, lineWidth: number = 1, fillStyle: string = 'rgba(0,255,0,0.2)', sleepStyle: string = 'rgba(100,100,100,0.2)') {
for (var s = 0; s < body.shapesLength; s++)