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Convert to vector maths

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This commit is contained in:
David Rowe 2014-08-22 09:29:08 -07:00
parent 6a6670a962
commit c8ac5f584a
1 changed files with 10 additions and 17 deletions
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27
examples/editVoxels.js
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@ -1299,26 +1299,19 @@ function mouseMoveEvent(event) {
// Watch the drag direction to tell which way to 'extrude' this voxel
if (!isExtruding) {
var pickRay = Camera.computePickRay(event.x, event.y);
var lastVoxelDistance = { x: pickRay.origin.x - lastVoxelPosition.x,
y: pickRay.origin.y - lastVoxelPosition.y,
z: pickRay.origin.z - lastVoxelPosition.z };
var distance = Vec3.length(lastVoxelDistance);
var mouseSpot = { x: pickRay.direction.x * distance, y: pickRay.direction.y * distance, z: pickRay.direction.z * distance };
mouseSpot.x += pickRay.origin.x;
mouseSpot.y += pickRay.origin.y;
mouseSpot.z += pickRay.origin.z;
var dx = mouseSpot.x - lastVoxelPosition.x;
var dy = mouseSpot.y - lastVoxelPosition.y;
var dz = mouseSpot.z - lastVoxelPosition.z;
var distance = Vec3.length(Vec3.subtract(pickRay.origin, lastVoxelPosition));
var mouseSpot = Vec3.sum(Vec3.multiply(pickRay.direction, distance), pickRay.origin);
var delta = Vec3.subtract(mouseSpot, lastVoxelPosition);
extrudeScale = lastVoxelScale;
extrudeDirection = { x: 0, y: 0, z: 0 };
isExtruding = true;
if (dx > lastVoxelScale) extrudeDirection.x = extrudeScale;
else if (dx < -lastVoxelScale) extrudeDirection.x = -extrudeScale;
else if (dy > lastVoxelScale) extrudeDirection.y = extrudeScale;
else if (dy < -lastVoxelScale) extrudeDirection.y = -extrudeScale;
else if (dz > lastVoxelScale) extrudeDirection.z = extrudeScale;
else if (dz < -lastVoxelScale) extrudeDirection.z = -extrudeScale;
if (delta.x > lastVoxelScale) extrudeDirection.x = extrudeScale;
else if (delta.x < -lastVoxelScale) extrudeDirection.x = -extrudeScale;
else if (delta.y > lastVoxelScale) extrudeDirection.y = extrudeScale;
else if (delta.y < -lastVoxelScale) extrudeDirection.y = -extrudeScale;
else if (delta.z > lastVoxelScale) extrudeDirection.z = extrudeScale;
else if (delta.z < -lastVoxelScale) extrudeDirection.z = -extrudeScale;
else isExtruding = false;
} else {
// We have got an extrusion direction, now look for mouse move beyond threshold to add new voxel