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Title	a little faster
ID	4587127026139136
Created	19 days ago, 1734743691773
Updated	19 days ago, 1734797843264
Code	var DeKhan = (function() { /* Regular expressions derived from Element118 delag() function. / var plusPlusExp = new RegExp("__env__\\.KAInfiniteLoopCount\\+\\+;\\n", "g"); var ifClauseExp = new RegExp("\\n\\sif \$__env__\\.KAInfiniteLoopCount > 1000\$ {[\\s]+__env__\\.KAInfiniteLoopProtect\$'[^']'\$;[^}]+}", "g"); var newExp = new RegExp("__env__\\.PJSCodeInjector\\.applyInstance\$(\\S+), '\\S+'\$", "g"); var envExp = new RegExp("__env__\\.", "g"); var noBreakSpace = "\u00a0"; / primenumbers7532@gmail.com / var lineBreak = String.fromCharCode(10); / Larry Serflaten for IE Windows / var spaceExp = new RegExp(" ", "g"); var newlineExp = new RegExp("\\n", "g"); var wasFrameCount = frameCount; frameCount = function() { frameCount = wasFrameCount; return this; }; var globals = frameCount(); var F = Object.constructor; / Javascript Function (capital F) constructor / var metIpseMecum = (0 \|\| arguments).callee; / Given source code, return a function in the global scope. / function conjureFunctionFrom(source) { / Copied from Element118, delag() function. / return F('return (function(__env__) {return ' + source + ';});')()(globals); } / Return a function like f without any loop detection. / function loopDetect(f) { var source = f.toString(); source = source.replace(plusPlusExp, ""); source = source.replace(ifClauseExp, ""); return conjureFunctionFrom(source); } / Return a function like f where the caller supplies the filter. / function applyRegExp(f, rExp, replacement) { var source = f.toString(); source = source.replace(rExp, replacement); return conjureFunctionFrom(source); } / Return a function like f that uses the keyword "new" again. / function renew(f) { return this.applyRegExp(f, newExp, "new $1"); } / * Print completely deKhanified function f source out via println. * All arguments are optional. / function _print(f, prefix, suffix) { f = f \|\| metIpseMecum; prefix = prefix \|\| ""; suffix = suffix \|\| ""; f = this.loopDetect(f); f = this.renew(f); var source = f.toString(); source = source.replace(envExp, ""); source = prefix + source + suffix; this.printText(source); } / Print source line(s) out via println. / function printText(source) { source = source \|\| " "; / blank line if nothing else... / source = source.replace(spaceExp, noBreakSpace); source = source.replace(newlineExp, lineBreak); println(source); } return { loopDetect: loopDetect, applyRegExp: applyRegExp, renew: renew, print: _print, printText: printText, }; })(); / Library / var points = [ [100, 100, 100], [-100, 100, 100], [-100, -100, 100], [100, -100, 100], [100, 100, -100], [-100, 100, -100], [-100, -100, -100], [100, -100, -100] ]; var lines = [ [0, 1], [1, 2], [2, 3], [3, 0], [4, 5], [5, 6], [6, 7], [7, 4], [0, 4], [1, 5], [2, 6], [3, 7], ]; var triangles = [ [0, 1, 2], [0, 2, 3], // Front face [4, 5, 6], [4, 6, 7], // Back face [0, 1, 5], [0, 5, 4], // Top face [2, 3, 7], [2, 7, 6], // Bottom face [0, 3, 7], [0, 7, 4], // Right face [1, 2, 6], [1, 6, 5] // Left face ]; var triangleColors = [ [255, 0, 0], [0, 255, 0], // Front face [0, 0, 255], [255, 255, 0], // Back face [0, 255, 255], [255, 0, 255], // Top face [255, 165, 0], [255, 192, 203], // Bottom face [128, 0, 128], [0, 128, 128], // Right face [128, 128, 0], [0, 0, 128] // Left face ]; var zBuffer = new Array(width height); // Initialize Z-buffer var project = function(point) { var scale = 200 / (point[2] + 300); var x = point[0] * scale + width * 0.5; var y = point[1] * scale + height 0.5; return [x, y, point[2]]; // Return x, y, and original z for comparison later }; var moveAll = function(dx, dy, dz) { for (var i = 0; i < points.length; i++) { points[i][0] += dx; points[i][1] += dy; points[i][2] += dz; } }; // Calculate barycentric coordinates for the point inside the triangle var barycentric = function(p, p0, p1, p2) { var denom = 1 / ((p1[1] - p2[1]) (p0[0] - p2[0]) + (p2[0] - p1[0]) * (p0[1] - p2[1])); var a = ((p1[1] - p2[1]) * (p[0] - p2[0]) + (p2[0] - p1[0]) * (p[1] - p2[1])) * denom; var b = ((p2[1] - p0[1]) * (p[0] - p2[0]) + (p0[0] - p2[0]) * (p[1] - p2[1])) * denom; var c = 1 - a - b; return [a, b, c]; }; // Check if pixel (x, y) is inside the triangle // Rasterize the triangle and perform Z-buffer check loadPixels(); var pix = imageData.data; var rasterizeTriangle = function(p0, p1, p2, color) { var xmin = Math.max(0, ~~Math.min(p0[0], p1[0], p2[0])); var xmax = Math.min(width - 1, ~~Math.max(p0[0], p1[0], p2[0])); var ymin = Math.max(0, ~~Math.min(p0[1], p1[1], p2[1])); var ymax = Math.min(height - 1, ~~Math.max(p0[1], p1[1], p2[1])); // Loop through all pixels in the bounding box of the triangle for (var y = ymin; y < ymax; y++) { for (var x = xmin; x < xmax; x++) { var b = barycentric([x, y], p0, p1, p2); if (b[0] >= 0 && b[1] >= 0 && b[2] >= 0) { var z = b[0] * p0[2] + b[1] * p1[2] + b[2] * p2[2]; var idx=(y * width + x)4; if (z < zBuffer[idx/4]) { zBuffer[y width + x] = z; pix[idx] = color[0]; pix[idx + 1] = color[1]; pix[idx + 2] = color[2]; } } } } }; // Rotate points (just for animation) var rotateY_ = function(amount) { for (var i = 0; i < points.length; i++) { var p = points[i]; var a = atan2(p[2], p[0]) + amount; var d = dist(p[2], p[0], 0, 0); var nx = Math.cos(Math.PI0.005555555a) * d; var ny = Math.sin(Math.PI0.005555555a) * d; points[i][0] = nx; points[i][2] = ny; } }; var rotateX_ = function(amount) { for (var i = 0; i < points.length; i++) { var p = points[i]; var a = atan2(p[2], p[1]) + amount; var d = dist(p[2], p[1], 0, 0); var nx = Math.cos(Math.PI0.005555555a) * d; var ny = Math.sin(Math.PI0.005555555a) * d; points[i][1] = nx; points[i][2] = ny; } }; frameRate(100); rasterizeTriangle = DeKhan.loopDetect(rasterizeTriangle); barycentric = DeKhan.loopDetect(barycentric); var draw = function() { rotateX_((mouseY-200)/50); rotateY_((mouseX-200)/50); background(0); pix.fill(255); // Clear Z-buffer for this frame zBuffer.fill(10000); // Loop through all triangles and render them with their respective colors for (var i = 0; i < triangles.length; i++) { var t = triangles[i]; var p0 = project(points[t[0]]); var p1 = project(points[t[1]]); var p2 = project(points[t[2]]); // Get the color for this triangle var color = triangleColors[i]; // Rasterize the triangle and perform Z-buffer check rasterizeTriangle(p0, p1, p2, color); } updatePixels(); println(this.__frameRate); }; draw = DeKhan.loopDetect(draw);
Folds	2,78
Fork	false
Key	ag5zfmtoYW4tYWNhZGVteXIXCxIKU2NyYXRjaHBhZBiAgLvn-_6SCAw
Votes	1
Spin-Offs	0
Type	PJS
Width	400
Height	400
User Flagged	false
Origin Scratchpad	{"id":"6214970231406592","title":"3D ENGINE","deleted":"false","official":"false"}
Hidden From Hotlist	false
Restricted Posting	false
By Child	false
Author Nick	Bearkirb314🐻❄️
Author Name	BearKirb314
Author ID	kaid_375460112550893828689953
Author Profile Access	PUBLIC

Archive Data

Added	19 days ago, 1734797879224
Updated	19 days ago, 1734797879224
Source Deleted	unknown