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Added Colored Lighting #4

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Added Colored Lighting #4

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1174f4c
Added colored lighting
csun Apr 27, 2014
0a0676b
Allow user to set lightColor through options
csun Apr 27, 2014
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14 changes: 14 additions & 0 deletions js/color.js
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Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,20 @@
return '#' + hex;
};

/**
* Returns a the color when lit with a certain color light
*/
Color.prototype.lightWith = function (lightColor) {
var newColor = new Color();

newColor.r = (lightColor.r / 255) * this.r;
newColor.g = (lightColor.g / 255) * this.g;
newColor.b = (lightColor.b / 255) * this.b;

newColor.loadHSL();
return newColor;
};


/**
* Returns a lightened color based on a given percentage
Expand Down
5 changes: 4 additions & 1 deletion js/isomer.js
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Expand Up @@ -26,6 +26,7 @@ function Isomer(canvasId, options) {
* The maximum color difference from shading
*/
this.colorDifference = 0.20;
this.lightColor = options.lightColor || new Isomer.Color(255, 255, 255);
}

Isomer.prototype._translatePoint = function (point) {
Expand Down Expand Up @@ -95,6 +96,8 @@ Isomer.prototype._addPath = function (path, baseColor) {
*/
var brightness = Vector.dotProduct(normal, this.lightAngle);

var color = baseColor.lighten(brightness * this.colorDifference);
var color = baseColor.lightWith(this.lightColor);
color = color.lighten(brightness * this.colorDifference);

this.canvas.path(path.points.map(this._translatePoint.bind(this)), color);
};