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authormensonge <mensonge@b3834d28-1941-0410-a4f8-b48e95affb8f>2008-11-13 09:49:11 +0000
committermensonge <mensonge@b3834d28-1941-0410-a4f8-b48e95affb8f>2008-11-13 09:49:11 +0000
commite44a7e37b6c7b5961adaffc62b9042b8d442938e (patch)
tree95b67c356e93163467db2451f2b8cce84ed5d582 /includes/js/dojox/gfx3d/gradient.js
parenta62b9742ee5e28bcec6872d88f50f25b820914f6 (diff)
downloadsemanticscuttle-e44a7e37b6c7b5961adaffc62b9042b8d442938e.tar.gz
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New feature: basic Ajax suggestion for tags and implementation of Dojo toolkit
git-svn-id: https://semanticscuttle.svn.sourceforge.net/svnroot/semanticscuttle/trunk@151 b3834d28-1941-0410-a4f8-b48e95affb8f
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+if(!dojo._hasResource["dojox.gfx3d.gradient"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
+dojo._hasResource["dojox.gfx3d.gradient"] = true;
+dojo.provide("dojox.gfx3d.gradient");
+
+dojo.require("dojox.gfx3d.vector");
+dojo.require("dojox.gfx3d.matrix");
+
+(function(){
+ var dist = function(a, b){ return Math.sqrt(Math.pow(b.x - a.x, 2) + Math.pow(b.y - a.y, 2)); };
+ var N = 32;
+
+ dojox.gfx3d.gradient = function(model, material, center, radius, from, to, matrix){
+ // summary: calculate a cylindrical gradient
+ // model: dojox.gfx3d.lighting.Model: color model
+ // material: Object: defines visual properties
+ // center: Object: center of the cylinder's bottom
+ // radius: Number: radius of the cylinder
+ // from: Number: from position in radians
+ // to: Number: from position in radians
+ // matrix: dojox.gfx3d.Matrix3D: the cumulative transformation matrix
+ // tolerance: Number: tolerable diffirence in colors between gradient steps
+
+ var m = dojox.gfx3d.matrix, v = dojox.gfx3d.vector, mx = m.normalize(matrix),
+ f = m.multiplyPoint(mx, radius * Math.cos(from) + center.x, radius * Math.sin(from) + center.y, center.z),
+ t = m.multiplyPoint(mx, radius * Math.cos(to) + center.x, radius * Math.sin(to) + center.y, center.z),
+ c = m.multiplyPoint(mx, center.x, center.y, center.z), step = (to - from) / N, r = dist(f, t) / 2,
+ mod = model[material.type], fin = material.finish, pmt = material.color,
+ colors = [{offset: 0, color: mod.call(model, v.substract(f, c), fin, pmt)}];
+
+ for(var a = from + step; a < to; a += step){
+ var p = m.multiplyPoint(mx, radius * Math.cos(a) + center.x, radius * Math.sin(a) + center.y, center.z),
+ df = dist(f, p), dt = dist(t, p);
+ colors.push({offset: df / (df + dt), color: mod.call(model, v.substract(p, c), fin, pmt)});
+ }
+ colors.push({offset: 1, color: mod.call(model, v.substract(t, c), fin, pmt)});
+
+ return {type: "linear", x1: 0, y1: -r, x2: 0, y2: r, colors: colors};
+ };
+})();
+
+}