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Activate the distance tool to report permanently its distance. #39

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Activate the distance tool to report permanently its distance. #39

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d8d5d5f
Activate the distance tool to report permanently its distance.
Jun 16, 2020
ebc8bdc
further improves distance slider so tapping on it sets the distance f…
benptc Jun 16, 2020
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20 changes: 7 additions & 13 deletions tools/distance-slider/index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -71,7 +71,6 @@
var isPointerDown = false;
var initialDistance = null;
var value = 0;
var valueOffset = 0.5;

var realityInterface = new RealityInterface();
realityInterface.initNode('value', 'node', 0, 0, 1);
Expand All @@ -82,29 +81,24 @@
});
document.addEventListener('pointerup', function() {
isPointerDown = false;
initialDistance = null;
valueOffset = value; // so tapping again preserves previous value
});

// document.addEventListener('pointermove', function(e) {
// if (!isPointerDown) { return; }
// render(e.pageX / window.innerWidth);
// });

realityInterface.subscribeToMatrix();
realityInterface.addMatrixListener(function(modelView, _projection) {
if (!isPointerDown) { return; }

// This tool should be always on. Uncomment to only compute while pointer down.
// if (!isPointerDown) { return; }

// var scaleFactor = Math.abs(modelView[0]); // distance is relative to scale of frame
var scaleFactor_IGNORED = 1; // distance is relative to scale of frame
var scaleFactor_IGNORED = 1; // distance is not relative to scale of frame
var zDistance = Math.abs(modelView[14]);

if (!initialDistance && isPointerDown) {
if (isPointerDown) {
initialDistance = zDistance;
}

var unclippedValue = ((zDistance - initialDistance)/scaleFactor_IGNORED) / (200); // found 200 through trial and error
unclippedValue += valueOffset;
// when it's at initial distance, value is 1. goes down to 0 as distance approaches 0.
var unclippedValue = 1 + (zDistance - initialDistance) / initialDistance;
value = parseFloat(Math.max(0, Math.min(1, unclippedValue)).toFixed(2)); // rounds to nearest 2 decimal places

realityInterface.write('value', value);
Expand Down