86 lines
1.9 KiB
JavaScript
86 lines
1.9 KiB
JavaScript
OV.NameFromLine = function (line, startIndex, commentChar)
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{
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let name = line.substr (startIndex);
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let commentStart = name.indexOf (commentChar);
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if (commentStart !== -1) {
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name = name.substr (0, commentStart);
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}
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return name.trim ();
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};
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OV.ParametersFromLine = function (line, commentChar)
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{
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if (commentChar !== null) {
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let commentStart = line.indexOf (commentChar);
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if (commentStart !== -1) {
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line = line.substr (0, commentStart).trim ();
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}
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}
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return line.split (/\s+/u);
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};
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OV.ReadLines = function (str, onLine)
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{
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function LineFound (line, onLine)
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{
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let trimmed = line.trim ();
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if (trimmed.length > 0) {
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onLine (trimmed);
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}
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}
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let cursor = 0;
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let next = str.indexOf ('\n', cursor);
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while (next !== -1) {
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LineFound (str.substr (cursor, next - cursor), onLine);
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cursor = next + 1;
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next = str.indexOf ('\n', cursor);
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}
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LineFound (str.substr (cursor), onLine);
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};
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OV.IsPowerOfTwo = function (x)
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{
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return (x & (x - 1)) === 0;
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};
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OV.NextPowerOfTwo = function (x)
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{
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if (OV.IsPowerOfTwo (x)) {
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return x;
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}
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let npot = Math.pow (2, Math.ceil (Math.log (x) / Math.log (2)));
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return parseInt (npot, 10);
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};
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OV.ResizeImageToPowerOfTwoSides = function (image)
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{
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if (OV.IsPowerOfTwo (image.width) && OV.IsPowerOfTwo (image.height)) {
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return image;
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}
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let width = OV.NextPowerOfTwo (image.width);
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let height = OV.NextPowerOfTwo (image.height);
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let canvas = document.createElement ('canvas');
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canvas.width = width;
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canvas.height = height;
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let context = canvas.getContext ('2d');
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context.drawImage (image, 0, 0, width, height);
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return context.getImageData (0, 0, width, height);
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};
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OV.UpdateMaterialTransparency = function (material)
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{
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material.transparent = false;
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if (OV.IsLower (material.opacity, 1.0)) {
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material.transparent = true;
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} else if (material.diffuseMap !== null) {
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let extension = OV.GetFileExtension (material.diffuseMap.name);
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if (extension === 'png') {
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material.transparent = true;
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}
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}
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};
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