protected override void DrawForSelection(GfxDrawForSelectionParams data)
{
if (DrawSubItemsForSelection)
{
var prev = vp.SuspendSetColorForSelection;
vp.SuspendSetColorForSelection = false;
// Draws the lines with the color-coding needed for visibility computation
for (int index = 0; index < SelectedSubItems.Count; index++)
{
Point3D p1 = Vertices[Lines[SelectedSubItems[index]].V1];
Point3D p2 = Vertices[Lines[SelectedSubItems[index]].V2];
vp.SetColorDrawForSelection(SelectedSubItems[index]);
IndexLine tri = Lines[SelectedSubItems[index]];
data.RenderContext.DrawLine(p1, p2);
}
vp.SuspendSetColorForSelection = prev;
// reset the color to avoid issues with the entities drawn after this one
data.RenderContext.SetColorWireframe(System.Drawing.Color.White);
}
else
{
data.RenderContext.DrawIndexLines(Lines, Vertices);
}
}
protected override void DrawForSelection(GfxDrawForSelectionParams data)
{
if (entityNature == entityNatureType.Wire)
{
data.RenderContext.Draw(wireGraphicsData);
}
else
{
base.DrawForSelection(data);
}
}
protected override void DrawForSelection(GfxDrawForSelectionParams data)
{
if (DrawSubItemsForSelection)
{
var prev = vp.SuspendSetColorForSelection;
vp.SuspendSetColorForSelection = false;
// Draws the triangles with the color-coding needed for visibility computation
for (int index = 0; index < selectedSubItems.Count; index++)
{
//draws only the triangles with normals directions towards the Camera
int i = selectedSubItems[index];
Point3D p1 = Vertices[Triangles[i].V1];
Point3D p2 = Vertices[Triangles[i].V2];
Point3D p3 = Vertices[Triangles[i].V3];
double[] u = new[] { p1.X - p3.X, p1.Y - p3.Y, p1.Z - p3.Z };
double[] v = new[] { p2.X - p1.X, p2.Y - p1.Y, p2.Z - p1.Z };
// cross product
Vector3D Normal = new Vector3D(u[1] * v[2] - u[2] * v[1], u[2] * v[0] - u[0] * v[2], u[0] * v[1] - u[1] * v[0]);
Normal.Normalize();
if (Vector3D.Dot(vp.Camera.NearPlane.AxisZ, Normal) <= 0)
{
continue;
}
vp.SetColorDrawForSelection(i);
IndexTriangle tri = Triangles[i];
data.RenderContext.DrawTriangles(new Point3D[]
{
Vertices[tri.V1],
Vertices[tri.V2],
Vertices[tri.V3],
},
Vector3D.AxisZ);
}
vp.SuspendSetColorForSelection = prev;
// reset the color to avoid issues with the entities drawn after this one
data.RenderContext.SetColorWireframe(System.Drawing.Color.White);
}
else
{
base.DrawForSelection(data);
}
}
