New function curvePoint()

dliu53 · dliu53 · commit ef57baf38b9c · 2009-12-17T14:01:27.000-05:00
diff --git a/processing.js b/processing.js
@@ -1738,6 +1738,10 @@ function buildProcessing( curElement ){
   p.bezierPoint = function bezierPoint(a,b,c,d,t){
     return (1-t)*(1-t)*(1-t)*a+3*(1-t)*(1-t)*t*b+3*(1-t)*t*t*c+t*t*t*d;
 }
+  p.curvePoint = function curvePoint(a,b,c,d,t){
+    return 0.5*((2*b)+(-a+c)*t+(2*a-5*b+4*c-d)*t*t+(-a+3*b-3*c+d)*t*t*t)
+}
+
 
 //end
 

Original file line number	Diff line number	Diff line change
`@@ -1738,6 +1738,10 @@ function buildProcessing( curElement ){`
`1738`	`1738`	`p.bezierPoint = function bezierPoint(a,b,c,d,t){`
`1739`	`1739`	`return (1-t)(1-t)(1-t)a+3(1-t)(1-t)tb+3(1-t)ttc+tttd;`
`1740`	`1740`	`}`
	`1741`	`+ p.curvePoint = function curvePoint(a,b,c,d,t){`
	`1742`	`+ return 0.5((2b)+(-a+c)t+(2a-5b+4c-d)tt+(-a+3b-3c+d)tt*t)`
	`1743`	`+}`
	`1744`	`+`
`1741`	`1745`
`1742`	`1746`	`//end`
`1743`	`1747`