feat: update UI labels and improve scaling parameters for better user experience

js/i18n.js

@@ -47,7 +47,7 @@ export const TRANSLATIONS = {
     'tooltips.proportionalScalingAria':  'Proportional scaling (U = V)',
 
     // Displacement section
-    'sections.displacement': 'Displacement',
+    'sections.displacement': 'Texture Depth',
     'labels.amplitude':      'Amplitude',
 
     // Surface mask section
@@ -143,7 +143,7 @@ export const TRANSLATIONS = {
     'ui.loadStl':        'STL laden\u2026',
 
     // Displacement map section
-    'sections.displacementMap': 'Verschiebungstextur',
+    'sections.displacementMap': 'Textur',
     'ui.uploadCustomMap':  'Eigene Textur hochladen',
     'ui.noMapSelected':    'Keine Textur ausgew\u00e4hlt',
 

js/main.js

@@ -117,12 +117,12 @@ const exclSectionHeading  = document.getElementById('excl-section-heading');
 const exclHint            = document.getElementById('excl-hint');
 
 // ── Scale slider log helpers ──────────────────────────────────────────────────
-// Slider stores 0–1000; actual scale spans 0.1–10 on a log axis.
-// Middle position 500 → scale 1.0 (exact midpoint on log scale).
-const _LOG_MIN = Math.log(0.1);
+// Slider stores 0–1000; actual scale spans 0.05–10 on a log axis.
+// Middle position 500 → scale ~0.71 (log midpoint between 0.05 and 10).
+const _LOG_MIN = Math.log(0.05);
 const _LOG_MAX = Math.log(10);
-const scaleToPos = v => Math.round((Math.log(Math.max(0.1, Math.min(10, v))) - _LOG_MIN) / (_LOG_MAX - _LOG_MIN) * 1000);
-const posToScale = p => parseFloat(Math.exp(_LOG_MIN + (p / 1000) * (_LOG_MAX - _LOG_MIN)).toFixed(1));
+const scaleToPos = v => Math.round((Math.log(Math.max(0.05, Math.min(10, v))) - _LOG_MIN) / (_LOG_MAX - _LOG_MIN) * 1000);
+const posToScale = p => parseFloat(Math.exp(_LOG_MIN + (p / 1000) * (_LOG_MAX - _LOG_MIN)).toFixed(2));
 
 // ── Init ──────────────────────────────────────────────────────────────────────
 
@@ -261,7 +261,7 @@ function wireEvents() {
 
   // Scale U — when lock is on, mirror to V
   const applyScaleU = (v) => {
-    v = Math.max(0.1, Math.min(10, v));
+    v = Math.max(0.05, Math.min(10, v));
     settings.scaleU = v;
     scaleUSlider.value = scaleToPos(v);
     scaleUVal.value = v;
@@ -273,7 +273,7 @@ function wireEvents() {
 
   // Scale V — when lock is on, mirror to U
   const applyScaleV = (v) => {
-    v = Math.max(0.1, Math.min(10, v));
+    v = Math.max(0.05, Math.min(10, v));
     settings.scaleV = v;
     scaleVSlider.value = scaleToPos(v);
     scaleVVal.value = v;

js/mapping.js

@@ -96,8 +96,8 @@ export function computeUV(pos, normal, mode, settings, bounds) {
       const az = Math.abs(normal.z);
       let uRaw, vRaw;
       if (ax >= ay && ax >= az) {
-        uRaw = (pos.z - min.z) / md;
-        vRaw = (pos.y - min.y) / md;
+        uRaw = (pos.y - min.y) / md;
+        vRaw = (pos.z - min.z) / md;
       } else if (ay >= ax && ay >= az) {
         uRaw = (pos.x - min.x) / md;
         vRaw = (pos.z - min.z) / md;

js/previewMaterial.js

@@ -66,7 +66,7 @@ const fragmentShader = /* glsl */`
     uv -= 0.5;
     uv  = vec2(c * uv.x - s * uv.y, s * uv.x + c * uv.y);
     uv += 0.5;
-    return texture2D(displacementMap, fract(uv)).r;
+    return texture2D(displacementMap, uv).r;
   }
 
   // Height at this fragment for all projection modes.
@@ -134,7 +134,7 @@ const fragmentShader = /* glsl */`
       // Picks the single planar projection whose axis is most aligned with the face normal.
       vec3 absN = abs(MN);
       if (absN.x >= absN.y && absN.x >= absN.z) {
-        return sampleMap(vec2((pos.z - boundsMin.z) / md, (pos.y - boundsMin.y) / md));
+        return sampleMap(vec2((pos.y - boundsMin.y) / md, (pos.z - boundsMin.z) / md));
       } else if (absN.y >= absN.x && absN.y >= absN.z) {
         return sampleMap(vec2((pos.x - boundsMin.x) / md, (pos.z - boundsMin.z) / md));
       } else {