[haxe] 4.3 porting (a012479f, 92723279).

spine-haxe/spine-haxe/spine/BonePose.hx

@@ -139,9 +139,7 @@ class BonePose extends BoneLocal implements Update {
 				c = pc * la + pd * lc;
 				d = pc * lb + pd * ld;
 			case Inherit.noScale, Inherit.noScaleOrReflection:
-				rotation *= MathUtils.degRad;
-				var cos = Math.cos(rotation);
-				var sin = Math.sin(rotation);
+				var r = rotation * MathUtils.degRad, cos = Math.cos(r), sin = Math.sin(r);
 				var za = (pa * cos + pb * sin) / skeleton.scaleX;
 				var zc = (pc * cos + pd * sin) / skeleton.scaleY;
 				var s = Math.sqrt(za * za + zc * zc);
@@ -150,15 +148,15 @@ class BonePose extends BoneLocal implements Update {
 				zc *= s;
 				s = Math.sqrt(za * za + zc * zc);
 				if (inherit == Inherit.noScale && ((pa * pd - pb * pc < 0) != ((skeleton.scaleX < 0) != (skeleton.scaleY < 0)))) s = -s;
-				rotation = Math.PI / 2 + Math.atan2(zc, za);
-				var zb:Float = Math.cos(rotation) * s;
-				var zd:Float = Math.sin(rotation) * s;
-				shearX *= MathUtils.degRad;
-				shearY = (90 + shearY) * MathUtils.degRad;
-				var la = Math.cos(shearX) * scaleX;
-				var lb = Math.cos(shearY) * scaleY;
-				var lc = Math.sin(shearX) * scaleX;
-				var ld = Math.sin(shearY) * scaleY;
+				r = Math.PI / 2 + Math.atan2(zc, za);
+				var zb:Float = Math.cos(r) * s;
+				var zd:Float = Math.sin(r) * s;
+				var rx = MathUtils.degRad;
+				var ry = (90 + shearY) * MathUtils.degRad;
+				var la = Math.cos(rx) * scaleX;
+				var lb = Math.cos(ry) * scaleY;
+				var lc = Math.sin(rx) * scaleX;
+				var ld = Math.sin(ry) * scaleY;
 				a = za * la + zb * lc;
 				b = za * lb + zb * ld;
 				c = zc * la + zd * lc;

spine-haxe/spine-haxe/spine/attachments/RegionAttachment.hx

@@ -84,19 +84,6 @@ class RegionAttachment extends Attachment implements HasTextureRegion {
 	/** Calculates the RegionAttachment.offsets and RegionAttachment.uvs using the region and the attachment's transform. Must be called if the
 	 * region, the region's properties, or the transform are changed. */
 	public function updateRegion():Void {
-		if (region == null) {
-			throw new SpineException("Region not set.");
-			uvs[0] = 0;
-			uvs[1] = 0;
-			uvs[2] = 0;
-			uvs[3] = 1;
-			uvs[4] = 1;
-			uvs[5] = 1;
-			uvs[6] = 1;
-			uvs[7] = 0;
-			return;
-		}
-
 		var regionScaleX = width / region.originalWidth * scaleX;
 		var regionScaleY = height / region.originalHeight * scaleY;
 		var localX = -width / 2 * scaleX + region.offsetX * regionScaleX;
@@ -125,7 +112,16 @@ class RegionAttachment extends Attachment implements HasTextureRegion {
 		offset[6] = localX2Cos - localYSin;
 		offset[7] = localYCos + localX2Sin;
 
-		if (region.degrees == 90) {
+		if (region == null) {
+			uvs[0] = 0;
+			uvs[1] = 0;
+			uvs[2] = 0;
+			uvs[3] = 1;
+			uvs[4] = 1;
+			uvs[5] = 1;
+			uvs[6] = 1;
+			uvs[7] = 0;
+		} else if (region.degrees == 90) {
 			uvs[0] = region.u2;
 			uvs[1] = region.v2;
 			uvs[2] = region.u;