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Code Issues Projects Releases Wiki Activity

remove error accumulation during moving objects

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This commit is contained in:
Val Erastov 2014-10-09 00:25:41 -07:00
parent 93781f8ba4
commit b7ceb9fa9c
1 changed files with 27 additions and 1 deletions
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28
web/app/canvas.js
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@ -332,6 +332,10 @@ TCAD.TWO.EndPoint.prototype.normalDistance = function(aim) {
return aim.minus(new TCAD.Vector(this.x, this.y)).length();
}
TCAD.TWO.EndPoint.prototype.getReferencePoint = function() {
return this;
};
TCAD.TWO.EndPoint.prototype.translateImpl = function(dx, dy) {
this.x += dx;
this.y += dy;
@ -378,6 +382,10 @@ TCAD.TWO.Segment.prototype.draw = function(ctx, scale) {
this.b.draw(ctx, scale);
};
TCAD.TWO.Segment.prototype.getReferencePoint = function() {
return this.a;
};
TCAD.TWO.Segment.prototype.translateImpl = function(dx, dy) {
this.a.translate(dx, dy);
this.b.translate(dx, dy);
@ -418,6 +426,10 @@ TCAD.TWO.Arc.prototype.draw = function(ctx, scale) {
this.c.draw(ctx, scale);
};
TCAD.TWO.Arc.prototype.getReferencePoint = function() {
return this.c;
};
TCAD.TWO.Arc.prototype.translateImpl = function(dx, dy) {
this.a.translate(dx, dy);
this.b.translate(dx, dy);
@ -603,14 +615,28 @@ TCAD.TWO.DragTool = function(obj, viewer) {
this.obj = obj;
this.viewer = viewer;
this._point = {x: 0, y: 0};
this.ref = this.obj.getReferencePoint();
this.errorX = 0;
this.errorY = 0;
};
TCAD.TWO.DragTool.prototype.mousemove = function(e) {
var x = this._point.x;
var y = this._point.y;
this.viewer.screenToModel2(e.x, e.y, this._point);
this.obj.translate(this._point.x - x, this._point.y - y);
var dx = this._point.x - x - this.errorX;
var dy = this._point.y - y - this.errorY;
var checkX = this.ref.x;
var checkY = this.ref.y;
this.obj.translate(dx, dy);
this.solveRequest(2);
this.errorX = (this.ref.x - dx) - checkX;
this.errorY = (this.ref.y - dy) - checkY;
// console.log("accumulated error X = " + this.errorX);
// console.log("accumulated error Y = " + this.errorY);
this.viewer.refresh();
};