scratchfoundation/paper.js
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Clean up Path#toShape().

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Jürg Lehni 2013-10-16 23:35:50 +02:00
parent 772f8175e4
commit 51cf1cfec6
1 changed files with 31 additions and 24 deletions
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55
src/path/Path.js
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@ -1600,13 +1600,19 @@ var Path = PathItem.extend(/** @lends Path# */{
? parent : this)._style; ? parent : this)._style;
}, },
toShape: function() { // DOCS: toShape
toShape: function(insert) {
if (!this._closed) if (!this._closed)
return null; return null;
if (insert === undefined)
insert = true;
var segments = this._segments, var segments = this._segments,
center = this.getPosition(true), type,
shape = null, size,
radius,
topCenter; topCenter;
function isColinear(i, j) { function isColinear(i, j) {
@ -1630,46 +1636,47 @@ var Path = PathItem.extend(/** @lends Path# */{
// objects with curves(circle, ellipse, roundedRectangle). // objects with curves(circle, ellipse, roundedRectangle).
if (this.isPolygon() && segments.length === 4 if (this.isPolygon() && segments.length === 4
&& isColinear(0, 2) && isColinear(1, 3) && isOrthogonal(1)) { && isColinear(0, 2) && isColinear(1, 3) && isOrthogonal(1)) {
shape = new Shape.Rectangle({ type = Shape.Rectangle;
center: center, size = new Size(getDistance(0, 3), getDistance(0, 1));
size: new Size(getDistance(0, 3), getDistance(0, 1))
});
topCenter = segments[1]._point.add(segments[2]._point).divide(2); topCenter = segments[1]._point.add(segments[2]._point).divide(2);
} else if (segments.length === 8 && isArc(0) && isArc(2) && isArc(4) } else if (segments.length === 8 && isArc(0) && isArc(2) && isArc(4)
&& isArc(6) && isColinear(1, 5) && isColinear(3, 7)) { && isArc(6) && isColinear(1, 5) && isColinear(3, 7)) {
// It's a rounded rectangle. // It's a rounded rectangle.
var size = new Size(getDistance(1, 6), getDistance(0, 3)); type = Shape.Rectangle;
shape = new Shape.Rectangle({ size = new Size(getDistance(1, 6), getDistance(0, 3));
center: center, // Subtract side lengths from total width and divide by 2 to get the
size: size, // corner radius size.
// Subtract side lengths from total width and divide by 2 to radius = size.subtract(new Size(getDistance(0, 7),
// get corner radius size. getDistance(1, 2))).divide(2);
radius: size.subtract(new Size(getDistance(0, 7),
getDistance(1, 2))).divide(2)
});
topCenter = segments[3]._point.add(segments[4]._point).divide(2); topCenter = segments[3]._point.add(segments[4]._point).divide(2);
} else if (segments.length === 4 } else if (segments.length === 4
&& isArc(0) && isArc(1) && isArc(2) && isArc(3)) { && isArc(0) && isArc(1) && isArc(2) && isArc(3)) {
// If the distance between (point0 and point2) and (point1 // If the distance between (point0 and point2) and (point1
// and point3) are equal, then it is a circle // and point3) are equal, then it is a circle
if (Numerical.isZero(getDistance(0, 2) - getDistance(1, 3))) { if (Numerical.isZero(getDistance(0, 2) - getDistance(1, 3))) {
shape = new Shape.Circle(center, getDistance(0, 2) / 2); type = Shape.Circle;
radius = getDistance(0, 2) / 2;
} else { } else {
shape = new Shape.Ellipse({ type = Shape.Ellipse;
center: center, radius = new Size(getDistance(2, 0) / 2, getDistance(3, 1) / 2);
radius: new Size(getDistance(2, 0) / 2,
getDistance(3, 1) / 2)
});
} }
topCenter = segments[1]._point; topCenter = segments[1]._point;
} }
if (shape) { if (type) {
var center = this.getPosition(true),
shape = new type({
center: center,
size: size,
radius: radius,
insert: insert
});
// Determine and apply the shape's angle of rotation. // Determine and apply the shape's angle of rotation.
shape.rotate(topCenter.subtract(center).getAngle() + 90); shape.rotate(topCenter.subtract(center).getAngle() + 90);
shape.setStyle(this._style); shape.setStyle(this._style);
}
return shape; return shape;
}
return null;
}, },
_contains: function(point) { _contains: function(point) {