Ejemplo n.º 1
0
        private static bool _HitTest(GLPanel3D viewport, PointF pointInWpf, float sensitive, List <HitResult> results, IHitTestSource model)
        {
            if (model is GLModel3DGroup)
            {
                var group = model as GLModel3DGroup;
                foreach (var child in group.Children)
                {
                    if (_HitTest(viewport, pointInWpf, sensitive, results, child))
                    {
                        return(true);
                    }
                }
                return(false);
            }
            else
            {
                //var meshModel = model as GLMeshModel3D;
                var bounds3D = model.Bounds;
                var bounds2D = Math3DHelper.Transform(bounds3D, viewport);
                var sensity  = sensitive;
                switch (model.Mode)
                {
                case GLPrimitiveMode.GL_POINTS:
                case GLPrimitiveMode.GL_LINES:
                case GLPrimitiveMode.GL_LINE_LOOP:
                case GLPrimitiveMode.GL_LINE_STRIP:
                    if (!bounds2D.IsEmpty)
                    {
                        sensity += model.Mode == GLPrimitiveMode.GL_POINTS ? model.PointSize / 2 : model.LineWidth / 2;
                        bounds2D.Extents(sensity);
                    }
                    break;

                case GLPrimitiveMode.GL_TRIANGLES:
                case GLPrimitiveMode.GL_TRIANGLE_STRIP:
                case GLPrimitiveMode.GL_TRIANGLE_FAN:
                    break;
                }
                if (!bounds2D.Contains(pointInWpf))
                {
                    return(false);
                }

                var points            = model.GetHitTestPoints().ToArray();
                var pointsTransformed = new LazyArray <Point3F, Point3F>(points, p => viewport.Point3DToPointInWpfWithZDpeth(p));
                switch (model.Mode)
                {
                case GLPrimitiveMode.GL_POINTS:
                {
                    if (model.Pairs == null)
                    {
                        if (_HitTestPointResult(model, new DataPair(0, points.Length), points, pointsTransformed, results, pointInWpf, sensity))
                        {
                            return(true);
                        }
                    }
                    else
                    {
                        foreach (var pair in model.Pairs)
                        {
                            if (_HitTestPointResult(model, pair, points, pointsTransformed, results, pointInWpf, sensity))
                            {
                                return(true);
                            }
                        }
                    }
                }
                break;

                case GLPrimitiveMode.GL_LINES:
                case GLPrimitiveMode.GL_LINE_STRIP:
                case GLPrimitiveMode.GL_LINE_LOOP:
                {
                    if (model.Pairs == null)
                    {
                        if (_HitTestLinesResult(model, new DataPair(0, points.Length), points, pointsTransformed, results, pointInWpf, sensity))
                        {
                            return(true);
                        }
                    }
                    else
                    {
                        foreach (var pair in model.Pairs)
                        {
                            if (_HitTestLinesResult(model, pair, points, pointsTransformed, results, pointInWpf, sensity))
                            {
                                return(true);
                            }
                        }
                    }
                }
                break;

                case GLPrimitiveMode.GL_TRIANGLES:
                case GLPrimitiveMode.GL_TRIANGLE_STRIP:
                {
                    if (model.Pairs == null)
                    {
                        if (_HitTestTrianglesResult(model, new DataPair(0, points.Length), points, pointsTransformed, results, pointInWpf))
                        {
                            return(true);
                        }
                    }
                    else
                    {
                        foreach (var pair in model.Pairs)
                        {
                            if (_HitTestTrianglesResult(model, pair, points, pointsTransformed, results, pointInWpf))
                            {
                                return(true);
                            }
                        }
                    }
                }
                break;

                case GLPrimitiveMode.GL_TRIANGLE_FAN:
                {
                    if (model.Pairs == null)
                    {
                        if (_HitTestTriangleFansResult(model, new DataPair(0, points.Length), points, pointsTransformed, results, pointInWpf))
                        {
                            return(true);
                        }
                    }
                    else
                    {
                        foreach (var pair in model.Pairs)
                        {
                            if (_HitTestTriangleFansResult(model, pair, points, pointsTransformed, results, pointInWpf))
                            {
                                return(true);
                            }
                        }
                    }
                }
                break;
                }
                return(false);
            }
        }
Ejemplo n.º 2
0
        private static bool _HitTest(GLPanel3D viewport, RectF rectInWpf, IHitTestSource model, List <RectHitResult> results, bool isFullContain)
        {
            if (model is GLModel3DGroup)
            {
                var group = model as GLModel3DGroup;
                if (isFullContain)
                {
                    foreach (var child in group.Children)
                    {
                        if (!_HitTest(viewport, rectInWpf, child, results, isFullContain))
                        {
                            return(false);
                        }
                    }
                    if (model.Parent == null)
                    {
                        results.Add(new RectHitResult(model));
                    }
                    return(true);
                }
                else
                {
                    foreach (var child in group.Children)
                    {
                        if (_HitTest(viewport, rectInWpf, child, results, isFullContain))
                        {
                            return(true);
                        }
                    }
                    return(false);
                }
            }
            else
            {
                //var meshModel = model as GLMeshModel3D;
                var bounds3D = model.Bounds;
                var bounds2D = Math3DHelper.Transform(bounds3D, viewport);
                var sensity  = model.Mode == GLPrimitiveMode.GL_POINTS ? model.PointSize / 2 : model.LineWidth;
                switch (model.Mode)
                {
                case GLPrimitiveMode.GL_POINTS:
                case GLPrimitiveMode.GL_LINES:
                case GLPrimitiveMode.GL_LINE_LOOP:
                case GLPrimitiveMode.GL_LINE_STRIP:
                    if (!bounds2D.IsEmpty)
                    {
                        bounds2D.Extents(sensity);
                    }
                    break;
                }
                if ((isFullContain && bounds2D.IsEmpty) || rectInWpf.Contains(bounds2D))
                {
                    if (!isFullContain || model.Parent == null)
                    {
                        results.Add(new RectHitResult(model));
                    }
                    return(true);
                }
                else
                {
                    if (!rectInWpf.IntersectsWith(bounds2D))
                    {
                        return(false);
                    }
                    var flag1             = false;
                    var flag2             = true;
                    var pointsTransformed = new LazyArray <Point3F, PointF>(model.GetHitTestPoints(), p => viewport.Point3DToPointInWpf(p));
                    switch (model.Mode)
                    {
                    case GLPrimitiveMode.GL_POINTS:
                    {
                        if (model.Pairs == null)
                        {
                            _HitTestPointResult(new DataPair(0, pointsTransformed.Length), pointsTransformed, rectInWpf, isFullContain, sensity, ref flag1, ref flag2);
                        }
                        else
                        {
                            foreach (var pair in model.Pairs)
                            {
                                if (_HitTestPointResult(pair, pointsTransformed, rectInWpf, isFullContain, sensity, ref flag1, ref flag2))
                                {
                                    break;
                                }
                            }
                        }
                    }
                    break;

                    case GLPrimitiveMode.GL_LINES:
                    case GLPrimitiveMode.GL_LINE_LOOP:
                    case GLPrimitiveMode.GL_LINE_STRIP:
                    {
                        if (model.Pairs == null)
                        {
                            _HitTestLinesResult(model, new DataPair(0, pointsTransformed.Length), pointsTransformed, rectInWpf, isFullContain, sensity, ref flag1, ref flag2);
                        }
                        else
                        {
                            foreach (var pair in model.Pairs)
                            {
                                if (_HitTestLinesResult(model, pair, pointsTransformed, rectInWpf, isFullContain, sensity, ref flag1, ref flag2))
                                {
                                    break;
                                }
                            }
                        }
                    }
                    break;

                    case GLPrimitiveMode.GL_TRIANGLES:
                    case GLPrimitiveMode.GL_TRIANGLE_STRIP:
                    {
                        if (model.Pairs == null)
                        {
                            _HitTestTrianglesResult(model, new DataPair(0, pointsTransformed.Length), pointsTransformed, rectInWpf, isFullContain, ref flag1, ref flag2);
                        }
                        else
                        {
                            foreach (var pair in model.Pairs)
                            {
                                if (_HitTestTrianglesResult(model, pair, pointsTransformed, rectInWpf, isFullContain, ref flag1, ref flag2))
                                {
                                    break;
                                }
                            }
                        }
                    }
                    break;

                    case GLPrimitiveMode.GL_TRIANGLE_FAN:
                    {
                        if (model.Pairs == null)
                        {
                            _HitTestTriangleFansResult(new DataPair(0, pointsTransformed.Length), pointsTransformed, rectInWpf, isFullContain, ref flag1, ref flag2);
                        }
                        else
                        {
                            foreach (var pair in model.Pairs)
                            {
                                if (_HitTestTriangleFansResult(pair, pointsTransformed, rectInWpf, isFullContain, ref flag1, ref flag2))
                                {
                                    break;
                                }
                            }
                        }
                    }
                    break;
                    }
                    if (flag1 && !isFullContain)
                    {
                        results.Add(new RectHitResult(model));
                        return(true);
                    }
                    else if (flag2 && isFullContain)
                    {
                        if (model.Parent == null)
                        {
                            results.Add(new RectHitResult(model));
                        }
                        return(true);
                    }
                    return(false);
                }
            }
        }