431 lines
14 KiB
JavaScript
431 lines
14 KiB
JavaScript
/** Copyright Stewart Allen <sa@grid.space> -- All Rights Reserved */
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const default_values = {
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magic1: 'CXSW3DV2',
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magic2: 'CXSW3DV2',
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model: 'CL-89',
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version: 1,
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layer_count: 0,
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res_x: 3840,
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res_y: 2400,
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height: 0,
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thumb: undefined,
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preview1: undefined,
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preview2: undefined,
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dim_x: '192.000000',
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dim_y: '120.000000',
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layer: '0.050000',
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light_on: 6,
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light_off: 2,
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light_pwm: 255,
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lift_dist: 6,
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lift_speed: 60,
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down_speed: 150,
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base_layers: 8,
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base_light_on: 60,
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base_light_pwm: 255,
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base_lift_dist: 5,
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base_lift_speed: 60
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};
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const data_term = 0x0d0a;
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// https://github.com/sn4k3/UVtools/blob/v2.20.4/UVtools.Core/FileFormats/CXDLPFile.cs
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// CL-60 1620 x 2560
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// CL-89 3840 x 2400
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// CL-133 3840 x 2160
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export class CXDLP {
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constructor() {
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Object.assign(this, default_values);
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}
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// takes a DataView Object
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read(view) {
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let read = new DataReader(view, 0);
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function read_string(dbl) {
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let len = read.readU32();
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let str = '';
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while (--len > 0) {
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if (dbl) {
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read.readU8();
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len--;
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}
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str += String.fromCharCode(read.readU8());
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}
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if (!dbl) {
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read.skip(1); // null term on byte strings
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}
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return str;
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}
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let meta = {
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view,
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magic1: read_string(),
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version: read.readU16(),
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model: read_string(),
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layer_count: read.readU16(),
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res_x: read.readU16(),
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res_y: read.readU16(),
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height: read.readU32(),
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skip: read.skip(60),
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thumb: read.readBytes(26912),
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skip: read.skip(2), // 0xd0a term
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preview1: read.readBytes(168200),
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skip: read.skip(2), // 0xd0a term
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preview2: read.readBytes(168200),
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skip: read.skip(2), // 0xd0a term
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dim_x: read_string(true),
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dim_y: read_string(true),
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layer: read_string(true),
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light_on: read.readU16(),
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light_off: read.readU16(),
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base_light_on: read.readU16(),
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base_layers: read.readU16(),
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base_lift_dist: read.readU16(),
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base_lift_speed: read.readU16(),
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lift_dist: read.readU16(),
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lift_speed: read.readU16(),
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down_speed: read.readU16(),
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base_light_pwm: read.readU16(),
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light_pwm: read.readU16()
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};
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// read layer record lengths
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let layers = this.layers = [];
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for (let i=0; i<meta.layer_count; i++) {
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layers.push({ length: read.readU32() });
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}
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if (read.readU16() !== data_term) {
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throw `invalid data term @ ${read.pos - 2}`;
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}
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// read layer meta data, not line data
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for (let i=0; i<meta.layer_count; i++) {
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let size = read.readU32();
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if (size !== layers[i].length) {
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throw `layer length mismatch: ${size} != ${layers[i].length} @ i=${i}`;
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}
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let lines = read.readU32();
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layers[i].lines = lines;
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layers[i].pos = read.pos; // store line data position
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// skip line data and check data term is valid
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read.skip(lines * 6);
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if (read.readU16() !== data_term) {
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throw `invalid data term @ ${read.pos - 2}`;
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}
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}
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// read trailing magic
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meta.magic2 = read_string();
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// compute checksum and verify
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let cksum = 0;
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for (let i=0; i<read.pos; i++) {
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cksum = cksum ^ view.getUint8(i);
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}
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meta.checksum = cksum;
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if (cksum !== read.readU32()) {
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throw `checksum mismatch`;
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}
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delete meta.skip;
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Object.assign(this, meta);
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return this;
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}
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get_layer_lines(layer) {
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if (this.view) {
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if (layer > this.layers.length) {
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throw `layer out of range 0-${this.layers.length}`;
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}
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let out = [];
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let rec = this.layers[layer];
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let { lines, pos } = rec;
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for (let j=0; j<lines; j++) {
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let d1 = this.view.getUint16(pos); pos += 2;
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let d2 = this.view.getUint16(pos); pos += 2;
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let d3 = this.view.getUint16(pos); pos += 2;
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let y_start = d1 >> 3;
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let y_end = ((d1 & 0b111) << 10) | (d2 >> 6);
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let x_end = ((d2 & 0b111111) << 8) | (d3 >> 8);
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let color = d3 & 0xff;
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out.push({y_start, y_end, x_end, color});
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}
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return out;
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} else {
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throw "missing data view";
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}
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}
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write() {
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let output = new ArrayWriter();
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output.write_string = function write_string(str, dbl = false) {
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let len = str.length;
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output.writeU32(dbl ? len * 2 : len + 1);
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let pos = 0;
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while (pos < len) {
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if (dbl) {
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output.writeU8(0);
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}
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output.writeU8(str.charCodeAt(pos++));
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}
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if (!dbl) {
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output.writeU8(0);
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}
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}
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output.write_bytes = function(array, len) {
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if (!array) {
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output.skip(len);
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} else if (array.byteLength) {
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if (len !== array.byteLength) {
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throw `invalid array length: ${array.byteLength} != ${len}`;
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}
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// ArrayBuffer
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let read = new DataReader(array);
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for (let i=0; i<array.byteLength; i++) {
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output.writeU8(read.readU8());
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}
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} else if (array.length) {
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if (len !== array.length) {
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throw `invalid array length: ${array.length} != ${len}`;
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}
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// standard array
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output.writeBytes(array);
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} else {
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throw "invalid byte array";
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}
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};
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let layers = this.layers;
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this.layer_count = layers.length;
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output.write_string(this.magic1);
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output.writeU16(this.version);
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output.write_string(this.model);
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output.writeU16(this.layer_count);
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output.writeU16(this.res_x);
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output.writeU16(this.res_y);
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output.writeU32(this.height);
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output.skip(60);
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output.write_bytes(this.thumb, 26912); // thumb
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output.writeU16(data_term);
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output.write_bytes(this.preview1, 168200); // preview1
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output.writeU16(data_term);
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output.write_bytes(this.preview2, 168200); // preview1
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output.writeU16(data_term);
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output.write_string(this.dim_x, true);
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output.write_string(this.dim_y, true);
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output.write_string(this.layer, true);
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output.writeU16(this.light_on);
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output.writeU16(this.light_off);
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output.writeU16(this.base_light_on);
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output.writeU16(this.base_layers);
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output.writeU16(this.base_lift_dist);
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output.writeU16(this.base_lift_speed);
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output.writeU16(this.lift_dist);
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output.writeU16(this.lift_speed);
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output.writeU16(this.down_speed);
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output.writeU16(this.base_light_pwm);
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output.writeU16(this.light_pwm);
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// write placeholder layer length to capture position
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for (let layer of layers) {
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layer.l1 = output.pos;
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output.writeU32(0);
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}
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output.writeU16(data_term);
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// write out encoded layers
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for (let layer of layers) {
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layer.l2 = output.pos;
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// placeholder to be written post
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output.writeU32(0);
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output.writeU32(layer.lines.length);
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let start = output.pos;
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for (let line of layer.lines) {
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let b1 = (line.y_start >> 5);
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let b2 = ((line.y_start << 3) | (line.y_end >> 10)) & 0xff;
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let b3 = (line.y_end >> 2) & 0xff;
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let b4 = ((line.y_end << 6) | (line.x_end >> 8)) & 0xff;
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let b5 = (line.x_end) & 0xff;
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output.writeU8(b1);
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output.writeU8(b2);
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output.writeU8(b3);
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output.writeU8(b4);
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output.writeU8(b5);
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output.writeU8(line.color);
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}
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layer.length = output.pos - start;
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output.writeU16(data_term);
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}
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output.write_string(this.magic2);
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let ckpos = output.pos;
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// retrace and write layer lengths
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for (let layer of layers) {
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output.seek(layer.l1);
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output.writeU32(layer.length);
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output.seek(layer.l2);
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output.writeU32(layer.length);
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}
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output.seek(ckpos);
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// compute xor checksum
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let cksum = 0;
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let array = output.array;
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for (let i=0; i<array.length; i++) {
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cksum = cksum ^ (array[i] || 0);
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}
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output.writeU32(cksum);
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return output.toBuffer();
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}
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}
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CXDLP.export = function(params) {
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let { settings, width, height, slices } = params;
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let { thumb, preview1, preview2 } = params;
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let { device, process } = settings;
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let cxdlp = new CXDLP();
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if (width === 1620 && height === 2560) {
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cxdlp.model = "CL-60";
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} else
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if (width === 3840 && height === 2400) {
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cxdlp.model = "CL-89";
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} else
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if (width === 3840 && height === 2160) {
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cxdlp.model = "CL-133";
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} else {
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throw `invalid printer dimensions ${width} x ${height}`;
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}
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cxdlp.layers = slices.map(a => {return { lines: a }});
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cxdlp.res_x = device.resolutionX;
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cxdlp.res_y = device.resolutionY;
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cxdlp.dim_x = device.bedWidth.toFixed(5);
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cxdlp.dim_y = device.bedDepth.toFixed(5);
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cxdlp.layer = process.slaSlice.toFixed(5);
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cxdlp.thumb = thumb;
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cxdlp.preview1 = preview1;
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cxdlp.preview2 = preview2;
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cxdlp.light_on = process.slaLayerOn;
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cxdlp.light_off = process.slaLayerOff;
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// cxdlp.light_pwm = 255;
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cxdlp.lift_dist = process.slaPeelDist;
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cxdlp.lift_speed = process.slaPeelLiftRate * 60;
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cxdlp.base_layers = process.slaBaseLayers;
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cxdlp.base_light_on = process.slaBaseOn;
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// cxdlp.base_light_pwm = 255;
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cxdlp.base_lift_dist = process.slaBasePeelDist;
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cxdlp.base_lift_speed = process.slaBasePeelLiftRate * 60;
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return cxdlp.write();
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};
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CXDLP.render = function(params) {
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let { width, height, index, widgets, scaleX, scaleY } = params;
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let width2 = width / 2, height2 = height / 2;
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let array = [];
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let count = 0;
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let area = 0;
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function scaleMovePoly(poly) {
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let points = poly.points;
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poly._bounds = undefined;
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for (let i=0, il=points.length; i<il; i++) {
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let p = points[i];
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p.y = height - (p.y * scaleY + height2);
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p.x = p.x * scaleX + width2;
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}
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if (poly.inner) {
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for (let i=0, ia=poly.inner, il=poly.inner.length; i<il; i++) {
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scaleMovePoly(ia[i]);
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}
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}
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}
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// serialize poly into wasm heap memory
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function writePoly(writer, poly) {
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let pos = writer.skip(2);
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let inner = poly.inner;
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writer.writeU16(inner ? inner.length : 0, true);
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let points = poly.points;
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let bounds = poly.bounds;
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writer.writeU16(points.length, true);
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writer.writeU16(bounds.minx, true);
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writer.writeU16(bounds.maxx, true);
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writer.writeU16(bounds.miny, true);
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writer.writeU16(bounds.maxy, true);
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for (let j=0, jl=points.length; j<jl; j++) {
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let point = points[j];
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writer.writeF32(point.x, true);
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writer.writeF32(point.y, true);
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}
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if (inner && inner.length) {
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for (let i=0, il=inner.length; i<il; i++) {
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writePoly(writer, inner[i]);
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}
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}
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// write total struct length at struct head
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writer.view.setUint16(pos, writer.pos - pos, true);
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}
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widgets.forEach(widget => {
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let slice = widget.slices[index];
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if (slice) {
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if (slice.synth) count++;
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let polys = slice.unioned;
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if (!polys) polys = slice.tops.map(t => t.poly);
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if (slice.supports) polys.appendAll(slice.supports);
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array.appendAll(polys.map(poly => {
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return poly.clone(true).move(widget.track.pos);
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}));
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count += polys.length;
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}
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});
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let wasm = kiri.driver.SLA.wasm;
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let imagelen = width * height;
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let writer = new self.DataWriter(new DataView(wasm.memory.buffer), imagelen);
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writer.writeU16(width, true);
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writer.writeU16(height, true);
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writer.writeU16(array.length, true);
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// scale and move all polys to fit in rendered platform coordinates
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for (let i=0, il=array.length; i<il; i++) {
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let poly = array[i];
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area += poly.areaDeep();
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scaleMovePoly(poly);
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writePoly(writer, poly);
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}
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wasm.render(0, imagelen, 0);
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let image = wasm.heap;//.slice(0, imagelen);
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let lines = [];
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for (let x=0; x<width; x++) {
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let y_start = 0;
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let lastv = 0;
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for (let y=0; y<height; y++) {
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let v = image[x * height + y];
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if (v !== lastv) {
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if (lastv) {
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// emit any non-zero sequence
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lines.push({y_start, y_end: y, x_end: x, color: lastv});
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}
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if (v) {
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// start a new sequence
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y_start = y;
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}
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}
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lastv = v;
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}
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}
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return { lines, area };
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}
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