scratchfoundation/paper.js
1
0
Fork 0
mirror of https://github.com/scratchfoundation/paper.js.git synced 2025-01-19 14:10:14 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

Move getArea code to other statics block.

Browse source
This commit is contained in:
Jürg Lehni 2013-06-13 23:16:44 -07:00
parent 610e396d94
commit 1dee05900f
1 changed files with 14 additions and 14 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

28
src/path/Curve.js
View file

@ -584,6 +584,20 @@ statics: {
< 10 * tolerance * tolerance;
},
getArea: function(v) {
var p1x = v[0], p1y = v[1],
c1x = v[2], c1y = v[3],
c2x = v[4], c2y = v[5],
p2x = v[6], p2y = v[7];
// http://objectmix.com/graphics/133553-area-closed-bezier-curve.html
return ( 3.0 * c1y * p1x - 1.5 * c1y * c2x
- 1.5 * c1y * p2x - 3.0 * p1y * c1x
- 1.5 * p1y * c2x - 0.5 * p1y * p2x
+ 1.5 * c2y * p1x + 1.5 * c2y * c1x
- 3.0 * c2y * p2x + 0.5 * p2y * p1x
+ 1.5 * p2y * c1x + 3.0 * p2y * c2x) / 10;
},
getBounds: function(v) {
var min = v.slice(0, 2), // Start with values of point1
max = min.slice(), // clone
@ -965,20 +979,6 @@ new function() { // Scope for methods that require numerical integration
return Numerical.integrate(ds, a, b, getIterations(a, b));
},
getArea: function(v) {
var p1x = v[0], p1y = v[1],
c1x = v[2], c1y = v[3],
c2x = v[4], c2y = v[5],
p2x = v[6], p2y = v[7];
// http://objectmix.com/graphics/133553-area-closed-bezier-curve.html
return ( 3.0 * c1y * p1x - 1.5 * c1y * c2x
- 1.5 * c1y * p2x - 3.0 * p1y * c1x
- 1.5 * p1y * c2x - 0.5 * p1y * p2x
+ 1.5 * c2y * p1x + 1.5 * c2y * c1x
- 3.0 * c2y * p2x + 0.5 * p2y * p1x
+ 1.5 * p2y * c1x + 3.0 * p2y * c2x) / 10;
},
getParameterAt: function(v, offset, start) {
if (offset === 0)
return start;