Monorepo for Aesthetic.Computer
aesthetic.computer
blank: fix inverted backface cull — was showing back faces, hiding front
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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system/public/aesthetic.computer/disks/blank.mjs
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system/public/aesthetic.computer/disks/blank.mjs
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const nz = e1[0] * e2[1] - e1[1] * e2[0];
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// Dot with view direction — positive = facing camera
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const dot = nx * viewDirX + ny * viewDirY + nz * viewDirZ;
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if (dot <= 0) continue; // back-facing
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if (dot >= 0) continue; // normal faces away from camera → back-facing
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frontFaces.add(fi);
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const z = (proj[a][2] + proj[b][2] + proj[c][2] + proj[d][2]) / 4;
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drawList.push({ z, type: "face", proj, verts: [a, b, c, d], color, tag });