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feat: implement cursor-centric zoom functionality in viewer

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CNCKitchen
2026-03-26 10:42:29 +01:00
parent 656371c3e3
commit fca353a142
2 changed files with 50 additions and 0 deletions
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js/main.js
+24
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@@ -292,6 +292,7 @@ function wireEvents() {
clearTimeout(previewDebounce); previewDebounce = setTimeout(updatePreview, 80);
};
scaleUSlider.addEventListener('input', () => applyScaleU(posToScale(parseFloat(scaleUSlider.value))));
scaleUSlider.addEventListener('dblclick', () => applyScaleU(posToScale(parseFloat(scaleUSlider.defaultValue))));
scaleUVal.addEventListener('change', () => applyScaleU(parseFloat(scaleUVal.value)));
// Scale V — when lock is on, mirror to U
@@ -304,6 +305,7 @@ function wireEvents() {
clearTimeout(previewDebounce); previewDebounce = setTimeout(updatePreview, 80);
};
scaleVSlider.addEventListener('input', () => applyScaleV(posToScale(parseFloat(scaleVSlider.value))));
scaleVSlider.addEventListener('dblclick', () => applyScaleV(posToScale(parseFloat(scaleVSlider.defaultValue))));
scaleVVal.addEventListener('change', () => applyScaleV(parseFloat(scaleVVal.value)));
// Lock toggle
@@ -412,6 +414,11 @@ function wireEvents() {
brushRadius = parseFloat(exclBrushRadiusSlider.value) / 2;
exclBrushRadiusVal.value = parseFloat(exclBrushRadiusSlider.value);
});
exclBrushRadiusSlider.addEventListener('dblclick', () => {
exclBrushRadiusSlider.value = exclBrushRadiusSlider.defaultValue;
brushRadius = parseFloat(exclBrushRadiusSlider.value) / 2;
exclBrushRadiusVal.value = parseFloat(exclBrushRadiusSlider.value);
});
exclBrushRadiusVal.addEventListener('change', () => {
let diam = Math.max(0.2, Math.min(100, parseFloat(exclBrushRadiusVal.value) || 10));
brushRadius = diam / 2;
@@ -424,6 +431,12 @@ function wireEvents() {
exclThresholdVal.value = bucketThreshold;
_lastHoverTriIdx = -1; // invalidate hover so next mousemove re-computes
});
exclThresholdSlider.addEventListener('dblclick', () => {
exclThresholdSlider.value = exclThresholdSlider.defaultValue;
bucketThreshold = parseFloat(exclThresholdSlider.value);
exclThresholdVal.value = bucketThreshold;
_lastHoverTriIdx = -1;
});
exclThresholdVal.addEventListener('change', () => {
bucketThreshold = Math.max(0, Math.min(180, parseFloat(exclThresholdVal.value) || 20));
exclThresholdSlider.value = bucketThreshold;
@@ -907,6 +920,17 @@ function linkSlider(slider, valInput, onChangeFn, livePreview = true) {
previewDebounce = setTimeout(updatePreview, 80);
}
});
// Double-click resets to default value
slider.addEventListener('dblclick', () => {
slider.value = slider.defaultValue;
const v = parseFloat(slider.value);
const display = onChangeFn(v);
if (isSpan) valInput.textContent = display; else valInput.value = display;
if (livePreview) {
clearTimeout(previewDebounce);
previewDebounce = setTimeout(updatePreview, 80);
}
});
if (!isSpan) {
valInput.addEventListener('change', () => {
const raw = parseFloat(valInput.value);