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///////////////////////////////////////////////////////////////////////
// Class HitRecord
//
///////////////////////////////////////////////////////////////////////
var viewUtils = require("js/helper-classes/3D/view-utils").ViewUtils;
var vecUtils = require("js/helper-classes/3D/vec-utils").VecUtils;
var drawUtils = require("js/helper-classes/3D/draw-utils").DrawUtils;
var snapManagerModule = require("js/helper-classes/3D/snap-manager");
var HitRecord = exports.HitRecord = Object.create(Object.prototype,
{
///////////////////////////////////////////////////////////////////////
// Constant definitions
///////////////////////////////////////////////////////////////////////
SNAP_TYPE_STAGE : { value: 1, writable: true },
SNAP_TYPE_GRID_VERTEX : { value: 2, writable: true },
SNAP_TYPE_GRID_HORIZONTAL : { value: 13, writable: true },
SNAP_TYPE_GRID_VERTICAL: { value: 14, writable: true },
SNAP_TYPE_ALIGN_MERGED: { value: 15, writable: true },
SNAP_TYPE_HORIZONTAL_FROM_START: { value: 3, writable: true },
SNAP_TYPE_VERTICAL_FROM_START: { value: 4, writable: true },
SNAP_TYPE_ELEMENT: { value: 5, writable: true },
SNAP_TYPE_ELEMENT_EDGE: { value: 6, writable: true },
SNAP_TYPE_ELEMENT_VERTEX: { value: 7, writable: true },
SNAP_TYPE_ALIGN_HORIZONTAL: { value: 8, writable: true },
SNAP_TYPE_ALIGN_VERTICAL: { value: 9, writable: true },
SNAP_TYPE_ALIGN_BOTH: { value: 10, writable: true },
SNAP_TYPE_ELEMENT_CENTER: { value: 11, writable: true },
SNAP_TYPE_CONTAINED_ELEMENT: { value: 12, writable: true },
SNAP_TYPE_UNDEFINED: { value: null, writable: -1 },
///////////////////////////////////////////////////////////////////////
// Instance variables
///////////////////////////////////////////////////////////////////////
_type: { value: this.SNAP_TYPE_UNDEFINED, writable: true },
_elt: { value: null, writable: true }, // this can be null. example: snapping to the working plane
_screenPt: { value: null, writable: true }, // snap point in global screen space
_localPoint: { value: null, writable: true }, // snap point in the local space of the element
_plane: { value: null, writable: true }, // plane equation at the snap point in local object space
_planeMat: { value: Matrix.I(4) , writable: true }, // transform to take the point from plane space to the transformed view space of the element
_assocScrPt: { value: null, writable: true }, // associated screen point
_assocScrPt2: { value: null, writable: true }, // a second associated point for drawing multiple snap align hits
_planarHit: { value: false, writable: true },
_snapBoundaryIndex : { value: -1, writable: true }, // this used for snap align to object boundaries
_isQuadPt :{ value: false, writable: true }, // used for snapping to an object's quadrant point
///////////////////////////////////////////////////////////////////////
// Property accessors
///////////////////////////////////////////////////////////////////////
getElt : { value: function() { return this._elt; }},
setElt : { value: function(e) { this._elt = e; }},
getElement : { value: function() { return this._elt; }},
setElement : { value: function(e) { this._elt = e; }},
getZIndex : { value: function() { return this._zIndex; }},
setZIndex : { value: function(i) { this._zIndex = i; }},
setScreenPoint : { value: function(s) { this._screenPt = s.slice(0); }},
getScreenPoint : { value: function() { return this._screenPt.slice(0); }},
setLocalPoint : { value: function(s) { this._localPt = s.slice(0); }},
getLocalPoint : { value: function() { return this._localPt.slice(0); }},
setAssociatedScreenPoint : { value: function(s) { this._assocScrPt = s.slice(0); }},
getAssociatedScreenPoint : { value: function() { return this._assocScrPt.slice(0); }},
hasAssociatedScreenPoint : { value: function() { return this._assocScrPt != null; }},
setAssociatedScreenPoint2 : { value: function(s) { this._assocScrPt2 = s.slice(0); }},
getAssociatedScreenPoint2 : { value: function() { return this._assocScrPt2.slice(0); }},
hasAssociatedScreenPoint2 : { value: function() { return this._assocScrPt2 != null; }},
setPlane : { value: function(p) { this._plane = p.slice(0); }},
getPlane : { value: function() { return this._plane.slice(0); }},
setPlaneMatrix : { value: function(pm) { this._planeMat = pm.slice(0); }},
getPlaneMatrix : { value: function() { return this._planeMat.slice(0); }},
setPlanarHit : { value: function(p) { this._planarHit = p; }},
isPlanarHit : { value: function() { return this._planarHit; }},
getSnapBoundaryIndex : { value: function() { return this._snapBoundaryIndex; }},
setSnapBoundaryIndex : { value: function(i) { this._snapBoundaryIndex = i; }},
getType : { value: function() { return this._type; }},
setType : { value: function(t) {this._type = t; if (!this.checkType()) { throw new Error("invalid snap type"); return; } }},
getUseQuadPoint : { value: function() { return this._isQuadPt; }},
setUseQuadPoint : { value: function(q) {this._isQuadPt = q; }},
///////////////////////////////////////////////////////////////////////
// Methods
///////////////////////////////////////////////////////////////////////
checkType :{
value: function() {
var ok = false;
switch (this._type)
{
case this.SNAP_TYPE_STAGE:
//case this.SNAP_TYPE_GRID:
case this.SNAP_TYPE_GRID_VERTEX:
case this.SNAP_TYPE_GRID_HORIZONTAL:
case this.SNAP_TYPE_GRID_VERTICAL:
case this.SNAP_TYPE_HORIZONTAL_FROM_START:
case this.SNAP_TYPE_VERTICAL_FROM_START:
ok = true;
break;
case this.SNAP_TYPE_ALIGN_MERGED:
ok = true;
break;
case this.SNAP_TYPE_ELEMENT:
case this.SNAP_TYPE_ELEMENT_EDGE:
case this.SNAP_TYPE_ELEMENT_VERTEX:
case this.SNAP_TYPE_ELEMENT_CENTER:
case this.SNAP_TYPE_CONTAINED_ELEMENT:
ok = true;
break;
case this.SNAP_TYPE_ALIGN_HORIZONTAL:
case this.SNAP_TYPE_ALIGN_VERTICAL:
case this.SNAP_TYPE_ALIGN_BOTH:
ok = true;
break;
}
return ok;
}
},
isSomeGridTypeSnap : {
value: function() {
return ((this._type == this.SNAP_TYPE_GRID_VERTEX) ||
(this._type == this.SNAP_TYPE_GRID_HORIZONTAL) ||
(this._type == this.SNAP_TYPE_GRID_VERTICAL)
);
}
},
convertToWorkingPlane : {
value: function( wp ) {
var swp = this.calculateStageWorldPoint();
var wpMat = drawUtils.getPlaneToWorldMatrix(wp, MathUtils.getPointOnPlane(wp));
//var wpMatInv = wpMat.inverse();
var wpMatInv = glmat4.inverse( wpMat, []);
var localPt = MathUtils.transformPoint( swp, wpMatInv );
// create a new hit record
var hr = Object.create(HitRecord);//new HitRecord();
hr.setType( this.SNAP_TYPE_STAGE );
hr.setScreenPoint( this.getScreenPoint() );
hr.setLocalPoint( localPt );
hr.setPlane( wp );
hr.setPlaneMatrix( wpMat );
hr.setElt( snapManagerModule.SnapManager.getStage() );
return hr;
}
},
calculateStageWorldPoint : {
value: function() {
var wPt;
var elt = this.getElt();
if (elt != null)
{
var localPt = this.getLocalPoint();
var planeMat = this.getPlaneMatrix();
wPt = viewUtils.postViewToStageWorld( MathUtils.transformPoint(localPt,planeMat), elt );
}
return wPt;
}
},
calculateScreenPoint : {
value: function() {
var scrPt;
var stage = snapManagerModule.SnapManager.getStage();
var stageMat = viewUtils.getMatrixFromElement( stage );
var offset = viewUtils.getElementOffset( stage );
offset[2] = 0;
viewUtils.pushViewportObj( stage );
var elt = this.getElt();
if (elt != null)
{
var localPt = this.getLocalPoint();
var planeMat = this.getPlaneMatrix();
scrPt = viewUtils.postViewToStageWorld( MathUtils.transformPoint(localPt,planeMat), elt );
scrPt = vecUtils.vecAdd( 3, viewUtils.viewToScreen( MathUtils.transformPoint(scrPt, stageMat) ), offset);
}
viewUtils.popViewportObj();
return scrPt;
}
},
calculateElementWorldPoint : {
value: function() {
var localPt = this.getLocalPoint();
var worldPt = MathUtils.transformPoint( localPt, this.getPlaneMatrix() );
return worldPt;
}
},
calculateElementScreenPoint : {
value: function() {
var worldPt = this.calculateElementWorldPoint();
viewUtils.pushViewportObj( this._elt );
var scrPt = viewUtils.viewToScreen( worldPt );
viewUtils.popViewportObj();
return scrPt;
}
},
calculateElementScreenToPlane : {
value: function( scrPt, plane ) {
var elt = this.getElt();
viewUtils.pushViewportObj( elt );
var viewPt = viewUtils.screenToView( scrPt[0], scrPt[1], scrPt[2] );
var eyePt;
if(viewUtils.getPerspectiveDistFromElement(elt))
{
eyePt = viewUtils.getEyePoint();
}
else
{
eyePt = [viewPt[0], viewPt[1], 1400];
}
var projPt = MathUtils.vecIntersectPlane( eyePt, MathUtils.vecSubtract(viewPt,eyePt), plane );
return projPt;
}
},
calculateElementPreTransformScreenPoint : {
value: function() {
var localPt = this.getLocalPoint();
var worldPt = MathUtils.transformPoint( localPt, this.getPlaneMatrix() );
var mat = viewUtils.getMatrixFromElement( this._elt );
glmat4.inverse( mat );
localPt = MathUtils.transformPoint( worldPt, mat );
viewUtils.pushViewportObj( this._elt );
var scrPt = viewUtils.viewToScreen( localPt );
viewUtils.popViewportObj();
return scrPt;
}
},
getTypeString :{
value: function() {
var str;
switch (this.getType())
{
case this.SNAP_TYPE_STAGE: str = "SNAP_TYPE_STAGE"; break;
case this.SNAP_TYPE_GRID_VERTEX: str = "SNAP_TYPE_GRID_VERTEX"; break;
case this.SNAP_TYPE_GRID_HORIZONTAL: str = "SNAP_TYPE_GRID_HORIZONTAL"; break;
case this.SNAP_TYPE_GRID_VERTICAL: str = "SNAP_TYPE_GRID_VERTICAL"; break;
case this.SNAP_TYPE_HORIZONTAL_FROM_START: str = "SNAP_TYPE_HORIZONTAL_FROM_START"; break;
case this.SNAP_TYPE_VERTICAL_FROM_START: str = "SNAP_TYPE_VERTICAL_FROM_START"; break;
case this.SNAP_TYPE_ELEMENT: str = "SNAP_TYPE_ELEMENT"; break;
case this.SNAP_TYPE_ELEMENT_EDGE: str = "SNAP_TYPE_ELEMENT_EDGE"; break;
case this.SNAP_TYPE_ELEMENT_VERTEX: str = "SNAP_TYPE_ELEMENT_VERTEX"; break;
case this.SNAP_TYPE_ELEMENT_CENTER: str = "SNAP_TYPE_ELEMENT_CENTER"; break;
case this.SNAP_TYPE_CONTAINED_ELEMENT: str = "SNAP_TYPE_CONTAINED_ELEMENT"; break;
case this.SNAP_TYPE_ALIGN_HORIZONTAL: str = "SNAP_TYPE_ALIGN_HORIZONTAL"; break;
case this.SNAP_TYPE_ALIGN_VERTICAL: str = "SNAP_TYPE_ALIGN_VERTICAL"; break;
case this.SNAP_TYPE_ALIGN_BOTH: str = "SNAP_TYPE_ALIGN_BOTH"; break;
case this.SNAP_TYPE_ALIGN_MERGED: str = "this.SNAP_TYPE_ALIGN_MERGED"; break;
default:
str = "SNAP_TYPE_UNDEFINED";
break;
}
return str;
}
},
test:
{
value: function()
{
var elt = this.getElement();
var stage = viewUtils.getStage();
if (elt === stage) return;
var localPt = this.calculateElementPreTransformScreenPoint();
var stageWorldPt = this.calculateStageWorldPoint();
var globalPt = this.getScreenPoint();
var err = false;
var test1 = viewUtils.localToGlobal( localPt, elt );
var dist = vecUtils.vecDist(3, test1, globalPt);
if (MathUtils.fpSign(dist) != 0)
{
err = true;
console.log( "**** transform error 1 ***** " + dist + ", localPt: " + localPt );
}
var stageWorldToGlobal = viewUtils.getStageWorldToGlobalMatrix();
var test2 = MathUtils.transformAndDivideHomogeneousPoint( stageWorldPt, stageWorldToGlobal );
dist = vecUtils.vecDist(3, test2, globalPt);
if (MathUtils.fpSign(dist) != 0)
{
err = true;
console.log( "**** transform error 2 ***** " + dist + ", localPt: " + localPt );
}
var localToGlobal = viewUtils.getLocalToGlobalMatrix( elt );
var globalToLocal = glmat4.inverse( localToGlobal, [] );
var test3 = MathUtils.transformAndDivideHomogeneousPoint( globalPt, globalToLocal );
dist = vecUtils.vecDist(3, test3, localPt);
if (MathUtils.fpSign(dist) != 0)
{
err = true;
console.log( "**** transform error 3 ***** " + dist + ", localPt: " + localPt );
}
var objToStageWorld = viewUtils.getObjToStageWorldMatrix( elt, true );
var test4 = MathUtils.transformAndDivideHomogeneousPoint( localPt, objToStageWorld );
dist = vecUtils.vecDist(3, test4, stageWorldPt);
if (MathUtils.fpSign(dist) != 0)
{
err = true;
console.log( "**** transform error 4 ***** " + dist + ", localPt: " + localPt );
}
//if (!err) console.log( "no hitRecord error" );
}
}
});