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feat: add seam band width control and integrate with displacement logic for improved blending

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CNCKitchen
2026-03-19 20:12:54 +01:00
parent 14987b8587
commit 43a09e8b14
6 changed files with 78 additions and 7 deletions
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js/mapping.js
+3 -3
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@@ -37,7 +37,7 @@ export function isAmbiguousCubicNormal(normal) {
return primary - secondary <= CUBIC_AXIS_EPSILON;
}
export function getCubicBlendWeights(normal, blend) {
export function getCubicBlendWeights(normal, blend, seamBandWidth = 0.35) {
const axis = getDominantCubicAxis(normal);
const ax = Math.abs(normal.x);
const ay = Math.abs(normal.y);
@@ -61,7 +61,7 @@ export function getCubicBlendWeights(normal, blend) {
// Only blend inside a seam band around the cube-face boundary. This keeps
// strongly dominant faces fully textured even when the slider is barely on.
const seamWidth = Math.max(blend * 0.35, CUBIC_AXIS_EPSILON * 2);
const seamWidth = Math.max(seamBandWidth, CUBIC_AXIS_EPSILON * 2);
const seamMixRaw = 1 - Math.min(1, Math.max(0, (primary - secondary) / seamWidth));
const seamMix = blend * seamMixRaw * seamMixRaw * (3 - 2 * seamMixRaw);
if (seamMix <= 0.001) return oneHot;
@@ -183,7 +183,7 @@ export function computeUV(pos, normal, mode, settings, bounds) {
}
case MODE_CUBIC: {
const weights = getCubicBlendWeights(normal, settings.mappingBlend ?? 0.0);
const weights = getCubicBlendWeights(normal, settings.mappingBlend ?? 0.0, settings.seamBandWidth ?? 0.35);
const tYZ = applyTransform((pos.y - min.y) / md, (pos.z - min.z) / md, scaleU, scaleV, offsetU, offsetV, rotRad);
const tXZ = applyTransform((pos.x - min.x) / md, (pos.z - min.z) / md, scaleU, scaleV, offsetU, offsetV, rotRad);
const tXY = applyTransform((pos.x - min.x) / md, (pos.y - min.y) / md, scaleU, scaleV, offsetU, offsetV, rotRad);