protected override bool AllVerticesInScreenPolygon(ScreenPolygonParams data)
{
// Computes the lines that are completely enclosed to the screen polygon
if (vp.processVisibleOnly && !Selected)
{
return(false);
}
SelectedSubItems = new List <int>();
for (int i = 0; i < Lines.Length; i++)
{
IndexLine line = Lines[i];
if (UtilityEx.AllVerticesInScreenPolygon(data, new List <Point3D>()
{
Vertices[line.V1], Vertices[line.V2]
}, 2))
{
SelectedSubItems.Add(i);
}
}
return(false);
}
protected override bool AllVerticesInScreenPolygon(ScreenPolygonParams data)
{
// Computes the triangles that are completely enclosed to the screen polygon
if (vp.processVisibleOnly && !Selected)
{
return(false);
}
SelectedSubItems = new List <int>();
for (int i = 0; i < Triangles.Length; i++)
{
var verts = GetTriangleVertices(Triangles[i]);
if (UtilityEx.AllVerticesInScreenPolygon(data, verts, 3))
{
SelectedSubItems.Add(i);
}
}
UpdateCompileSelection();
return(false);
}
protected override bool IsCrossingScreenPolygon(ScreenPolygonParams data)
{
if (vp.processVisibleOnly && !Selected)
{
return(false);
}
SelectedSubItems = new List <int>();
bool res = base.IsCrossingScreenPolygon(data);
return(res);
}
protected override bool InsideOrCrossingScreenPolygon(ScreenPolygonParams data)
{
// Computes the triangles that are inside or crossing the screen polygon
for (int i = 0; i < Triangles.Length; i++)
{
var verts = GetTriangleVertices(Triangles[i]);
if (UtilityEx.InsideOrCrossingScreenPolygon(verts[0], verts[1], verts[2], data))
{
SelectedSubItems.Add(i);
}
}
return(false);
}
protected override bool IsCrossingScreenPolygon(ScreenPolygonParams data)
{
// Computes the triangles that are crossing the screen polygon
if (vp.processVisibleOnly && !Selected)
{
return(false);
}
SelectedSubItems = new List <int>();
bool res = base.IsCrossingScreenPolygon(data);
UpdateCompileSelection();
return(res);
}
protected override bool ThroughTriangleScreenPolygon(ScreenPolygonParams data)
{
SelectedSubItems.Sort();
for (int i = 0; i < Triangles.Length; i++)
{
if (SelectedSubItems.BinarySearch(i) >= 0)
{
continue;
}
var verts = GetTriangleVertices(Triangles[i]);
if (ThroughTriangleScreenPolygon(verts[0], verts[1], verts[2], data))
{
SelectedSubItems.Add(i);
}
}
return(false);
}
protected override bool InsideOrCrossingScreenPolygon(ScreenPolygonParams data)
{
// Computes the lines that are inside or crossing the screen polygon
for (int i = 0; i < Lines.Length; i++)
{
Segment2D seg;
IndexLine line = Lines[i];
Point3D pt1 = Vertices[line.V1];
Point3D pt2 = Vertices[line.V2];
Point3D screenP1 = vp.Camera.WorldToScreen(pt1, data.ViewFrame);
Point3D screenP2 = vp.Camera.WorldToScreen(pt2, data.ViewFrame);
if (screenP1.Z > 1 || screenP2.Z > 1)
{
return(false); // for perspective
}
seg = new Segment2D(screenP1, screenP2);
if (UtilityEx.PointInPolygon(screenP1, data.ScreenPolygon) ||
UtilityEx.PointInPolygon(screenP2, data.ScreenPolygon))
{
SelectedSubItems.Add(i);
continue;
}
for (int j = 0; j < data.ScreenSegments.Count; j++)
{
Point2D i0;
if (Segment2D.Intersection(data.ScreenSegments[j], seg, out i0))
{
SelectedSubItems.Add(i);
break;
}
}
}
return(false);
}
protected override bool IsCrossingScreenPolygon(ScreenPolygonParams data)
{
int newSelectedCount = 0;
for (int j = 0; j < PointArray.Length; j += 3)
{
Point2D onScreen = model.WorldToScreen(PointArray[j], PointArray[j + 1], PointArray[j + 2]);
if (ColorArray[j] != 255 &&
onScreen.X > data.Min.X && onScreen.X <data.Max.X &&
onScreen.Y> data.Min.Y && onScreen.Y < data.Max.Y &&
Utility.PointInPolygon(onScreen, data.ScreenPolygon))
{
// sets point color to red
ColorArray[j] = 255;
newSelectedCount++;
}
}
selectedCount += newSelectedCount;
if (newSelectedCount != 0)
{
RegenMode = regenType.CompileOnly;
CustomSelected = true;
}
else
if (selectedCount == 0)
{
CustomSelected = false;
}
return(false);
}
