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it\n-------------\n\nInstantiate a new heatmap, errors can be one of:\n\n * Webgl is not supported\n * No floating point texture support\n * Floating point render target not supported\n * Shader Compile Error: ...\n * Shader Link Error: ...\n\n```javascript\ntry{\n    var heatmap = createWebGLHeatmap({canvas: yourCanvas});\n}\ncatch(error){\n    // handle the error\n}\n```\n\ncreation arguments\n\n * canvas: the canvas you wish to draw on\n * width: explicit width\n * height: explicit height\n * intensityToAlpha: defaults to true\n * gradientTexture: texture used instead of color calculation, can be path or an image\n\nAdd a data point.\n\n * x and y relative to the canvas in pixels\n * size in pixels (radius)\n * intensity between 0 and 1\n\n```javascript\nheatmap.addPoint(x, y, size, intensity);\n```\n\nAdd a list of data points.\n\n * x and y relative to the canvas in pixels\n * size in pixels (radius)\n * intensity between 0 and 1\n\n```javascript\nheatmap.addPoints([{x:x, y:y, size:size, intensity:intensity}]);\n```\n\nDraw queued data points:\n\n```javascript\nheatmap.update()\n```\n\nDisplay the heatmap\n\n```javascript\nheatmap.display()\n```\n\nMultiply all values in the heatmap by a number (useful for decay)\n\n```javascript\nheatmap.multiply(0.995)\n```\n\nClamp all values in the heatmap to between two values:\n\n```javascript\nheatmap.clamp(0.0, 1.0)\n```\n\nBlur all values a little:\n\n```javascript\nheatmap.blur()\n```\n\nLicense\n-------\n\nCopyright (c) 2013, Florian Boesch \u003cpyalot@gmail.com\u003e http://codeflow.org/\n\nWebGL Heatmap is licensed under any of the following licenses at your choosing:\n\n * MIT: see mit-license\n * GPL: see gplv*-license\n * BSD: see bsd-license\n","funding_links":[],"categories":["CoffeeScript","📦 Legacy \u0026 Inactive 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