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);
}
}
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);
}
}
}