Doni/ModelHandle
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Add new line threshold calculation algorithm.

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This commit is contained in:
Viktor Kovacs 2023-10-27 11:47:42 +02:00
parent 8b3092acda
commit 3022673c5e
1 changed files with 36 additions and 8 deletions
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44
source/engine/viewer/viewermodel.js
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@ -121,6 +121,7 @@ export class ViewerMainModel
this.edgeSettings = new EdgeSettings (false, new RGBColor (0, 0, 0), 1);
this.hasLines = false;
this.hasPolygonOffset = false;
this.fullBoundingBox = null;
}
SetMainObject (mainObject)
@ -128,6 +129,7 @@ export class ViewerMainModel
this.mainModel.SetRootObject (mainObject);
this.hasLines = false;
this.hasPolygonOffset = false;
this.fullBoundingBox = null;
this.EnumerateLines ((line) => {
this.hasLines = true;
@ -192,6 +194,17 @@ export class ViewerMainModel
this.UpdatePolygonOffset ();
}
GetFullBoundingBox ()
{
if (this.fullBoundingBox !== null) {
return this.fullBoundingBox;
}
this.fullBoundingBox = this.GetBoundingBox (() => {
return true;
});
return this.fullBoundingBox;
}
GetBoundingBox (needToProcess)
{
let hasMesh = false;
@ -292,6 +305,18 @@ export class ViewerMainModel
GetMeshIntersectionUnderMouse (mouseCoords, camera, width, height)
{
function CalculateLineThreshold (mousePos, camera, boundingBoxCenter)
{
let thresholdInScreenCoordinates = 15.0;
let frustumRange = camera.far - camera.near;
let cameraDistanceFromCenter = boundingBoxCenter.distanceTo (camera.position);
let distanceInFrustumRatio = cameraDistanceFromCenter / frustumRange;
let zValue = -1.0 + 2.0 * distanceInFrustumRatio;
let referencePoint1 = new THREE.Vector3 (mousePos.x, mousePos.y, zValue).unproject (camera);
let referencePoint2 = new THREE.Vector3 (mousePos.x + thresholdInScreenCoordinates, mousePos.y, zValue).unproject (camera);
return referencePoint1.distanceTo (referencePoint2);
}
if (this.mainModel.IsEmpty ()) {
return null;
}
@ -300,17 +325,20 @@ export class ViewerMainModel
return null;
}
let raycaster = new THREE.Raycaster ();
if (this.hasLines) {
let boundingSphere = this.GetBoundingSphere (() => {
return true;
});
raycaster.params.Line.threshold = boundingSphere.radius / 100.0;
}
let mousePos = new THREE.Vector2 ();
mousePos.x = (mouseCoords.x / width) * 2 - 1;
mousePos.y = -(mouseCoords.y / height) * 2 + 1;
let raycaster = new THREE.Raycaster ();
if (this.hasLines) {
let boundingBox = this.GetFullBoundingBox ();
if (boundingBox !== null) {
let boundingBoxCenter = new THREE.Vector3 (0.0, 0.0, 0.0);
boundingBox.getCenter (boundingBoxCenter);
raycaster.params.Line.threshold = CalculateLineThreshold (mousePos, camera, boundingBoxCenter);
}
}
raycaster.setFromCamera (mousePos, camera);
let iSectObjects = raycaster.intersectObject (this.mainModel.GetRootObject (), true);
for (let i = 0; i < iSectObjects.length; i++) {