luboslenco
66 lines
2.0 KiB
Haxe
66 lines
2.0 KiB
Haxe
package arm.format;
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class StlParser {
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public var posa:kha.arrays.Int16Array = null;
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public var nora:kha.arrays.Int16Array = null;
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public var texa:kha.arrays.Int16Array = null;
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public var inda:kha.arrays.Uint32Array = null;
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public var scalePos = 1.0;
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public var scaleTex = 1.0;
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public var name = "";
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public var hasNext = false;
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public var pos = 0;
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public function new(blob:kha.Blob) {
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var bytes = blob.bytes;
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var input = new haxe.io.BytesInput(bytes);
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var header = input.read(80);
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if (header.getString(0, 5) == "solid") {
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return; // ascii not supported
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}
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var faces = input.readInt32();
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var posTemp = new kha.arrays.Float32Array(faces * 9);
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var norTemp = new kha.arrays.Float32Array(faces * 3);
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for (i in 0...faces) {
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var i3 = i * 3;
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norTemp[i3 ] = input.readFloat();
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norTemp[i3 + 1] = input.readFloat();
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norTemp[i3 + 2] = input.readFloat();
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var i9 = i * 9;
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posTemp[i9 ] = input.readFloat();
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posTemp[i9 + 1] = input.readFloat();
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posTemp[i9 + 2] = input.readFloat();
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posTemp[i9 + 3] = input.readFloat();
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posTemp[i9 + 4] = input.readFloat();
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posTemp[i9 + 5] = input.readFloat();
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posTemp[i9 + 6] = input.readFloat();
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posTemp[i9 + 7] = input.readFloat();
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posTemp[i9 + 8] = input.readFloat();
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input.readInt16(); // attribute
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}
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scalePos = 0.0;
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for (i in 0...posTemp.length) {
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var f = Math.abs(posTemp[i]);
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if (scalePos < f) scalePos = f;
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}
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var inv = 32767 * (1 / scalePos);
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var verts = Std.int(posTemp.length / 3);
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posa = new kha.arrays.Int16Array(verts * 4);
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nora = new kha.arrays.Int16Array(verts * 2);
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inda = new kha.arrays.Uint32Array(verts);
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for (i in 0...verts) {
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posa[i * 4 ] = Std.int( posTemp[i * 3 ] * inv);
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posa[i * 4 + 1] = Std.int(-posTemp[i * 3 + 2] * inv);
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posa[i * 4 + 2] = Std.int( posTemp[i * 3 + 1] * inv);
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nora[i * 2 ] = Std.int( norTemp[i ] * 32767);
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nora[i * 2 + 1] = Std.int(-norTemp[i + 2] * 32767);
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posa[i * 4 + 3] = Std.int( norTemp[i + 1] * 32767);
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inda[i] = i;
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}
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}
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}
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