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comparison nodejs/animate.js @ 808:9b6c26cf9102

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Move bounding box and center back to an object
author Thinker K.F. Li <thinker@codemud.net>
date Wed, 01 Sep 2010 20:04:35 +0800
parents bf54c0408d35
children 586e50f82c1f
comparison
equal deleted inserted replaced
807:5723e5446b7c 808:9b6c26cf9102
85 ang = percent * this._ang; 85 ang = percent * this._ang;
86 sv = Math.sin(ang); 86 sv = Math.sin(ang);
87 cv = Math.cos(ang); 87 cv = Math.cos(ang);
88 mtx = [cv, -sv, 0, sv, cv, 0]; 88 mtx = [cv, -sv, 0, sv, cv, 0];
89 89
90 shift = [1, 0, -obj.center_x, 0, 1, -obj.center_y]; 90 shift = [1, 0, -obj.center.x, 0, 1, -obj.center.y];
91 mtx = multiply(mtx, shift); 91 mtx = multiply(mtx, shift);
92 shift = [1, 0, obj.center_x, 0, 1, obj.center_y]; 92 shift = [1, 0, obj.center.x, 0, 1, obj.center.y];
93 mtx = multiply(shift, mtx); 93 mtx = multiply(shift, mtx);
94 mtx = multiply(mtx, this._start_mtx); 94 mtx = multiply(mtx, this._start_mtx);
95 95
96 obj[0] = mtx[0]; 96 obj[0] = mtx[0];
97 obj[1] = mtx[1]; 97 obj[1] = mtx[1];
181 this._coord = coord; 181 this._coord = coord;
182 this._app = app; 182 this._app = app;
183 } 183 }
184 184
185 holder.prototype = { 185 holder.prototype = {
186 go_center: function(o) { 186 go: function(pos) {
187 var sx, sy; 187 var sx, sy;
188 188
189 sx = o.center_x - this._coord.center_x; 189 sx = pos.x - this._coord.center.x;
190 sy = o.center_y - this._coord.center_y; 190 sy = pos.y - this._coord.center.y;
191 this.shift(sx, sy); 191 this.shift(sx, sy);
192 }, 192 },
193 193
194 go_center: function(o) {
195 this.go(o.center);
196 },
197
194 home: function() { 198 home: function() {
195 this._coord[2] = this._mtx[2]; 199 this._coord[2] = this._mtx[2];
196 this._coord[5] = this._mtx[5]; 200 this._coord[5] = this._mtx[5];
197 this._app.refresh(); 201 this._app.refresh();
198 }, 202 },