public LCC3VertexLocations(int tag, string name)
: base(tag, name)
{
_firstVertex = 0;
_centerOfGeometry = LCC3Vector.CC3VectorZero;
_boundingBox = LCC3BoundingBox.CC3BoundingBoxZero;
_radius = 0.0f;
this.MarkBoundaryDirty();
}
private void BuildBoundingBox()
{
LCC3Vector vl, vlMin, vlMax;
vl = (this.VertexCount > 0) ? this.LocationAt(0) : LCC3Vector.CC3VectorZero;
vlMin = vl;
vlMax = vl;
for (uint i = 1; i < this.VertexCount; i++)
{
vl = this.LocationAt(i);
vlMin = LCC3Vector.CC3VectorMinimize(vlMin, vl);
vlMax = LCC3Vector.CC3VectorMaximize(vlMax, vl);
}
_boundingBox = new LCC3BoundingBox(vlMin, vlMax);
_centerOfGeometry = _boundingBox.Center;
_boundaryIsDirty = false;
}
private void PopulateAsSolidBox(LCC3BoundingBox box, CCPoint corner, bool useSoftEdges=true)
{
LCC3Vector boxMin = box.Minimum;
LCC3Vector boxMax = box.Maximum;
uint vertexCount = 24;
uint triangleCount = 12;
this.EnsureVertexContent();
this.AllocatedVertexCapacity = vertexCount;
this.AllocatedVertexIndexCapacity = (triangleCount * 3);
LCC3VertexIndices indices = this.VertexIndices;
// Front face, CCW winding:
this.SetVertexLocationAtIndex(new LCC3Vector(boxMin.X, boxMin.Y, boxMax.Z), 0);
this.SetNormalAtIndex(useSoftEdges ? (LCC3Vector.CC3UnitXNegative + LCC3Vector.CC3UnitYNegative + LCC3Vector.CC3UnitZPositive) / 3 : LCC3Vector.CC3UnitZPositive, 0);
this.SetVertexTexCoord2FAtIndex(new CCTex2F(corner.X, (1.0f - corner.Y)), 0);
this.SetVertexLocationAtIndex(new LCC3Vector(boxMax.X, boxMin.Y, boxMax.Z), 1);
this.SetNormalAtIndex(useSoftEdges ? (LCC3Vector.CC3UnitXPositive + LCC3Vector.CC3UnitYNegative + LCC3Vector.CC3UnitZPositive) / 3 : LCC3Vector.CC3UnitZPositive, 1);
this.SetVertexTexCoord2FAtIndex(new CCTex2F(0.5f, (1.0f - corner.Y)), 1);
this.SetVertexLocationAtIndex(new LCC3Vector(boxMax.X, boxMax.Y, boxMax.Z), 2);
this.SetNormalAtIndex(useSoftEdges ? (LCC3Vector.CC3UnitXPositive + LCC3Vector.CC3UnitYPositive + LCC3Vector.CC3UnitZPositive) / 3 : LCC3Vector.CC3UnitZPositive, 2);
this.SetVertexTexCoord2FAtIndex(new CCTex2F(0.5f, corner.Y), 2);
this.SetVertexLocationAtIndex(new LCC3Vector(boxMin.X, boxMax.Y, boxMax.Z), 3);
this.SetNormalAtIndex(useSoftEdges ? (LCC3Vector.CC3UnitXNegative + LCC3Vector.CC3UnitYNegative + LCC3Vector.CC3UnitZPositive) / 3 : LCC3Vector.CC3UnitZPositive, 3);
this.SetVertexTexCoord2FAtIndex(new CCTex2F(corner.X, corner.Y), 3);
// Right face, CCW winding:
this.SetVertexLocationAtIndex(new LCC3Vector(boxMax.X, boxMin.Y, boxMax.Z), 4);
this.SetNormalAtIndex(useSoftEdges ? (LCC3Vector.CC3UnitXPositive + LCC3Vector.CC3UnitYNegative + LCC3Vector.CC3UnitZPositive) / 3 : LCC3Vector.CC3UnitXPositive, 4);
this.SetVertexTexCoord2FAtIndex(new CCTex2F(0.5f, (1.0f - corner.Y)), 4);
this.SetVertexLocationAtIndex(new LCC3Vector(boxMax.X, boxMin.Y, boxMin.Z), 5);
this.SetNormalAtIndex(useSoftEdges ? (LCC3Vector.CC3UnitXPositive + LCC3Vector.CC3UnitYNegative + LCC3Vector.CC3UnitZNegative) / 3 : LCC3Vector.CC3UnitXPositive, 5);
this.SetVertexTexCoord2FAtIndex(new CCTex2F((0.5f + corner.X), (1.0f - corner.Y)), 5);
this.SetVertexLocationAtIndex(new LCC3Vector(boxMax.X, boxMax.Y, boxMin.Z), 6);
this.SetNormalAtIndex(useSoftEdges ? (LCC3Vector.CC3UnitXPositive + LCC3Vector.CC3UnitYPositive + LCC3Vector.CC3UnitZNegative) / 3 : LCC3Vector.CC3UnitXPositive, 6);
this.SetVertexTexCoord2FAtIndex(new CCTex2F((0.5f + corner.X), corner.Y), 6);
this.SetVertexLocationAtIndex(new LCC3Vector(boxMax.X, boxMax.Y, boxMax.Z), 7);
this.SetNormalAtIndex(useSoftEdges ? (LCC3Vector.CC3UnitXPositive + LCC3Vector.CC3UnitYPositive + LCC3Vector.CC3UnitZPositive) / 3 : LCC3Vector.CC3UnitXPositive, 7);
this.SetVertexTexCoord2FAtIndex(new CCTex2F(0.5f, corner.Y), 7);
// Back face, CCW winding:
this.SetVertexLocationAtIndex(new LCC3Vector(boxMax.X, boxMin.Y, boxMin.Z), 8);
this.SetNormalAtIndex(useSoftEdges ? (LCC3Vector.CC3UnitXPositive + LCC3Vector.CC3UnitYNegative + LCC3Vector.CC3UnitZNegative) / 3 : LCC3Vector.CC3UnitZNegative, 8);
this.SetVertexTexCoord2FAtIndex(new CCTex2F((0.5f + corner.X), (1.0f - corner.Y)), 8);
this.SetVertexLocationAtIndex(new LCC3Vector(boxMin.X, boxMin.Y, boxMin.Z), 9);
this.SetNormalAtIndex(useSoftEdges ? (LCC3Vector.CC3UnitXNegative + LCC3Vector.CC3UnitYNegative + LCC3Vector.CC3UnitZNegative) / 3 : LCC3Vector.CC3UnitZNegative, 9);
this.SetVertexTexCoord2FAtIndex(new CCTex2F(1.0f, (1.0f - corner.Y)), 9);
this.SetVertexLocationAtIndex(new LCC3Vector(boxMin.X, boxMax.Y, boxMin.Z), 10);
this.SetNormalAtIndex(useSoftEdges ? (LCC3Vector.CC3UnitXNegative + LCC3Vector.CC3UnitYPositive + LCC3Vector.CC3UnitZNegative) / 3 : LCC3Vector.CC3UnitZNegative, 10);
this.SetVertexTexCoord2FAtIndex(new CCTex2F(1.0f, corner.Y), 10);
this.SetVertexLocationAtIndex(new LCC3Vector(boxMax.X, boxMax.Y, boxMin.Z), 11);
this.SetNormalAtIndex(useSoftEdges ? (LCC3Vector.CC3UnitXPositive + LCC3Vector.CC3UnitYPositive + LCC3Vector.CC3UnitZNegative) / 3 : LCC3Vector.CC3UnitZNegative, 11);
this.SetVertexTexCoord2FAtIndex(new CCTex2F((0.5f + corner.X), corner.Y), 11);
// Left face, CCW winding:
this.SetVertexLocationAtIndex(new LCC3Vector(boxMin.X, boxMin.Y, boxMin.Z), 12);
this.SetNormalAtIndex(useSoftEdges ? (LCC3Vector.CC3UnitXNegative + LCC3Vector.CC3UnitYNegative + LCC3Vector.CC3UnitZNegative) / 3 : LCC3Vector.CC3UnitXNegative, 12);
this.SetVertexTexCoord2FAtIndex(new CCTex2F(0.0f, (1.0f - corner.Y)), 12);
this.SetVertexLocationAtIndex(new LCC3Vector(boxMin.X, boxMin.Y, boxMax.Z), 13);
this.SetNormalAtIndex(useSoftEdges ? (LCC3Vector.CC3UnitXNegative + LCC3Vector.CC3UnitYNegative + LCC3Vector.CC3UnitZPositive) / 3 : LCC3Vector.CC3UnitXNegative, 13);
this.SetVertexTexCoord2FAtIndex(new CCTex2F(corner.X, (1.0f - corner.Y)), 13);
this.SetVertexLocationAtIndex(new LCC3Vector(boxMin.X, boxMax.Y, boxMax.Z),14);
this.SetNormalAtIndex(useSoftEdges ? (LCC3Vector.CC3UnitXNegative + LCC3Vector.CC3UnitYPositive + LCC3Vector.CC3UnitZPositive) / 3 : LCC3Vector.CC3UnitXNegative, 14);
this.SetVertexTexCoord2FAtIndex(new CCTex2F(corner.X, corner.Y), 14);
this.SetVertexLocationAtIndex(new LCC3Vector(boxMin.X, boxMax.Y, boxMin.Z), 15);
this.SetNormalAtIndex(useSoftEdges ? (LCC3Vector.CC3UnitXNegative + LCC3Vector.CC3UnitYPositive + LCC3Vector.CC3UnitZNegative) / 3 : LCC3Vector.CC3UnitXNegative, 15);
this.SetVertexTexCoord2FAtIndex(new CCTex2F(0.0f, corner.Y), 15);
// Top face, CCW winding:
this.SetVertexLocationAtIndex(new LCC3Vector(boxMin.X, boxMax.Y, boxMin.Z), 16);
this.SetNormalAtIndex(useSoftEdges ? (LCC3Vector.CC3UnitXNegative + LCC3Vector.CC3UnitYPositive + LCC3Vector.CC3UnitZNegative) / 3 : LCC3Vector.CC3UnitYPositive, 16);
this.SetVertexTexCoord2FAtIndex(new CCTex2F(corner.X, 0.0f), 16);
this.SetVertexLocationAtIndex(new LCC3Vector(boxMin.X, boxMax.Y, boxMax.Z), 17);
this.SetNormalAtIndex(useSoftEdges ? (LCC3Vector.CC3UnitXNegative + LCC3Vector.CC3UnitYPositive + LCC3Vector.CC3UnitZPositive) / 3 : LCC3Vector.CC3UnitYPositive, 17);
this.SetVertexTexCoord2FAtIndex(new CCTex2F(corner.X, corner.Y), 17);
this.SetVertexLocationAtIndex(new LCC3Vector(boxMax.X, boxMax.Y, boxMax.Z), 18);
this.SetNormalAtIndex(useSoftEdges ? (LCC3Vector.CC3UnitXPositive + LCC3Vector.CC3UnitYPositive + LCC3Vector.CC3UnitZPositive) / 3 : LCC3Vector.CC3UnitYPositive, 18);
this.SetVertexTexCoord2FAtIndex(new CCTex2F(0.5f, corner.Y), 18);
this.SetVertexLocationAtIndex(new LCC3Vector(boxMax.X, boxMax.Y, boxMin.Z), 19);
this.SetNormalAtIndex(useSoftEdges ? (LCC3Vector.CC3UnitXPositive + LCC3Vector.CC3UnitYPositive + LCC3Vector.CC3UnitZNegative) / 3 : LCC3Vector.CC3UnitYPositive, 19);
this.SetVertexTexCoord2FAtIndex(new CCTex2F(0.5f, 0.0f), 19);
// Bottom face, CCW winding:
this.SetVertexLocationAtIndex(new LCC3Vector(boxMin.X, boxMin.Y, boxMax.Z), 20);
this.SetNormalAtIndex(useSoftEdges ? (LCC3Vector.CC3UnitXNegative + LCC3Vector.CC3UnitYNegative + LCC3Vector.CC3UnitZPositive) / 3 : LCC3Vector.CC3UnitYNegative, 20);
this.SetVertexTexCoord2FAtIndex(new CCTex2F(corner.X, (1.0f - corner.Y)), 20);
this.SetVertexLocationAtIndex(new LCC3Vector(boxMin.X, boxMin.Y, boxMin.Z), 21);
this.SetNormalAtIndex(useSoftEdges ? (LCC3Vector.CC3UnitXNegative + LCC3Vector.CC3UnitYNegative + LCC3Vector.CC3UnitZNegative) / 3 : LCC3Vector.CC3UnitYNegative, 21);
this.SetVertexTexCoord2FAtIndex(new CCTex2F(corner.X, 1.0f), 21);
this.SetVertexLocationAtIndex(new LCC3Vector(boxMax.X, boxMin.Y, boxMin.Z), 22);
this.SetNormalAtIndex(useSoftEdges ? (LCC3Vector.CC3UnitXPositive + LCC3Vector.CC3UnitYNegative + LCC3Vector.CC3UnitZNegative) / 3 : LCC3Vector.CC3UnitYNegative, 22);
this.SetVertexTexCoord2FAtIndex( new CCTex2F(0.5f, 1.0f), 22);
this.SetVertexLocationAtIndex(new LCC3Vector(boxMax.X, boxMin.Y, boxMax.Z), 23);
this.SetNormalAtIndex(useSoftEdges ? (LCC3Vector.CC3UnitXPositive + LCC3Vector.CC3UnitYNegative + LCC3Vector.CC3UnitZPositive) / 3 : LCC3Vector.CC3UnitYNegative, 23);
this.SetVertexTexCoord2FAtIndex(new CCTex2F(0.5f, (1.0f - corner.Y)), 23);
uint indxIndx = 0;
uint vtxIndx = 0;
for (int side = 0; side < 6; side++)
{
// First trangle of side - CCW from bottom left
indices.SetIndex(vtxIndx++, indxIndx++);
indices.SetIndex(vtxIndx++, indxIndx++);
indices.SetIndex(vtxIndx, indxIndx++);
// Second triangle of side - CCW from bottom left
indices.SetIndex(vtxIndx++, indxIndx++);
indices.SetIndex(vtxIndx++, indxIndx++);
indices.SetIndex(vtxIndx - 4, indxIndx++);
}
}
public void PopulateFrom(LCC3VertexLocations another)
{
base.PopulateFrom(another);
_firstVertex = another._firstVertex;
_boundingBox = another.BoundingBox;
_centerOfGeometry = another.CenterOfGeometry;
_radius = another.Radius;
_boundaryIsDirty = another.BoundaryIsDirty;
_radiusIsDirty = another.RadiusIsDirty;
}
public void PopulateAsSolidBox(LCC3BoundingBox box, bool useSoftEdges=true)
{
float w = box.Maximum.X - box.Minimum.X;
float h = box.Maximum.Y - box.Minimum.Y;
float d = box.Maximum.Z - box.Minimum.Z;
float ufw = d + w + d + w;
float ufh = d + h + d;
this.PopulateAsSolidBox( box, new CCPoint((d / ufw), (d / ufh)));
}
