Ejemplo n.º 1
0
 public MouseMove3DEventArgs(object source, HitTestResult hitTestResult, Point position, Viewport3DX viewport = null)
     : base(GeometryModel3D.MouseMove3DEvent, source, hitTestResult, position, viewport)
 { }
Ejemplo n.º 2
0
        /// <summary>
        /// Checks if the ray hits the geometry of the model.
        /// If there a more than one hit, result returns the hit which is nearest to the ray origin.
        /// </summary>
        /// <param name="rayWS">Hitring ray from the camera.</param>
        /// <param name="result">results of the hit.</param>
        /// <returns>True if the ray hits one or more times.</returns>
        public virtual bool HitTest(Ray rayWS, ref List<HitTestResult> hits)
        {
            if (this.Visibility == Visibility.Collapsed)
            {
                return false;
            }
            if (this.IsHitTestVisible == false)
            {
                return false;
            }

            var g = this.Geometry as MeshGeometry3D;
            var h = false;
            var result = new HitTestResult();
            result.Distance = double.MaxValue;

            if (g != null)
            {
                var m = this.modelMatrix;
                // put bounds to world space
                var b = BoundingBox.FromPoints(this.Geometry.Positions.Select(x => Vector3.TransformCoordinate(x, m)).ToArray());
                //var b = this.Bounds;
    
                // this all happens now in world space now:
                if (rayWS.Intersects(ref b))
                {
                    foreach (var t in g.Triangles)
                    {
                        float d;
                        var p0 = Vector3.TransformCoordinate(t.P0, m);
                        var p1 = Vector3.TransformCoordinate(t.P1, m);
                        var p2 = Vector3.TransformCoordinate(t.P2, m);
                        if (Collision.RayIntersectsTriangle(ref rayWS, ref p0, ref p1, ref p2, out d))
                        {
                            if (d < result.Distance)
                            {
                                result.IsValid = true;
                                result.ModelHit = this;
                                // transform hit-info to world space now:
                                result.PointHit = (rayWS.Position + (rayWS.Direction * d)).ToPoint3D();
                                result.Distance = d;

                                var n = Vector3.Cross(p1 - p0, p2 - p0);
                                n.Normalize();
                                // transform hit-info to world space now:
                                result.NormalAtHit = n.ToVector3D();// Vector3.TransformNormal(n, m).ToVector3D();
                            }
                            h = true;
                        }
                    }
                }
            }
            if (h)
            {
                result.IsValid = h;
                hits.Add(result);                
            }
            return h;
        }
Ejemplo n.º 3
0
 public Mouse3DEventArgs(RoutedEvent routedEvent, object source, HitTestResult hitTestResult, Point position,  Viewport3DX viewport = null)
     : base(routedEvent, source)
 {
     this.HitTestResult = hitTestResult;
     this.Position = position;
     this.Viewport = viewport;
 }
Ejemplo n.º 4
0
 public MouseMove3DEventArgs(object source, HitTestResult hitTestResult, Point position, Viewport3DX viewport = null)
     : base(GeometryModel3D.MouseMove3DEvent, source, hitTestResult, position, viewport)
 {
 }