Created
September 23, 2020 18:21
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| Glacier.prototype.Get3DPosition = function(x,y){ | |
| // if(!offset){ offset = 0} | |
| // offset = 0; | |
| var x2 = Math.floor(x * this.imageData.width); | |
| var y2 = Math.floor(y * this.imageData.height); | |
| var color = getPixel( this.imageData, x2,y2); | |
| var h = color.r; | |
| h = Math.pow( h , .8); | |
| var v = new T.Vector3( x - .5, y - .5 , h); | |
| v.z *= this.offset ; | |
| v.z += .03; | |
| return v; | |
| } | |
| function getImageData( image ) { | |
| var canvas = document.createElement( 'canvas' ); | |
| canvas.width = image.width; | |
| canvas.height = image.height; | |
| var context = canvas.getContext( '2d' ); | |
| context.drawImage( image, 0, 0 ); | |
| return context.getImageData( 0, 0, image.width, image.height ); | |
| } | |
| function getPixel( imagedata, x, y ) { | |
| var position = ( x + imagedata.width * y ) * 4, data = imagedata.data; | |
| var color = new T.Color( | |
| data[ position + 0]/256, | |
| data[ position + 1]/256, | |
| data[position + 2 ]/256 | |
| ); | |
| return color;// { r: data[ position ], g: data[ position + 1 ], b: data[ position + 2 ], a: data[ position + 3 ] }; | |
| } | |
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