digilib: client/digitallibrary/jquery/dlGeometry.js comparison

comparison client/digitallibrary/jquery/dlGeometry.js @ 668:9f8056d6c289 jquery

transformation with mirror works now too!

author	robcast
date	Tue, 25 Jan 2011 22:04:27 +0100
parents	0d3d9517e448
children	a653d96166e9

comparison

equal deleted inserted replaced

-:1e9d7d92135c
+:9f8056d6c289
 };
 // add class methods to instance
 that.getRotation = transform.getRotation;
 that.getRotationAround = transform.getRotationAround;
 that.getTranslation = transform.getTranslation;
+that.getMirror = transform.getMirror;
 that.getScale = transform.getScale;
 return that;
 };
 return transform(traf);
 }
 return transform();
 };
+transform.getRotationAround = function (angle, pos) {
+// returns a Transform that is a rotation by angle degrees around pos
+var traf = transform.getTranslation({x : -pos.x, y : -pos.y});
+traf.concat(transform.getRotation(angle));
+traf.concat(transform.getTranslation(pos));
+return traf;
+};
 transform.getTranslation = function (pos) {
 // returns a Transform that is a translation by [pos.x, pos,y]
 var traf = {
 m02 : pos.x,
 m12 : pos.y
 };
 return transform(traf);
 };
-transform.getRotationAround = function (angle, pos) {
+transform.getMirror = function (type) {
-// returns a Transform that is a rotation by angle degrees around pos
+// returns a Transform that is a mirror about the axis type
-var traf = transform.getTranslation({x : -pos.x, y : -pos.y});
+if (type === 'x') {
-traf.concat(transform.getRotation(angle));
+var traf = {
-traf.concat(transform.getTranslation(pos));
+m00 : 1,
-return traf;
+m11 : -1
 };
+} else {
+var traf = {
+m00 : -1,
+m11 : 1
+};
+}
+return transform(traf);
+};
 transform.getScale = function (size) {
 // returns a Transform that is a scale by [size.width, size.height]
 var traf = {
 m00 : size.width,
 m11 : size.height