/// <summary>
/// Builds cube sides into this VertexStructure (these sides are built up of 16 vertices, so texture coordinates and normals are set)
/// </summary>
/// <param name="start">Start poiint of the cube</param>
/// <param name="size">Size of the cube</param>
/// <param name="color">Color of the cube</param>
public BuiltVerticesRange BuildCubeSides16V(Vector3 start, Vector3 size, Color4 color)
{
BuiltVerticesRange result = new BuiltVerticesRange(m_owner);
result.StartVertex = m_owner.CountVertices;
Vector3 dest = start + size;
float texX = 1f;
float texY = 1f;
float texZ = 1f;
if (m_tileSize != Vector2.Zero)
{
texX = size.X / m_tileSize.X;
texY = size.Y / m_tileSize.Y;
texZ = size.Z / m_tileSize.X;
}
//Front side
Vertex vertex = new Vertex(start, color, new Vector2(0f, texY), new Vector3(0f, 0f, -1f));
int a = m_owner.AddVertex(vertex);
int b = m_owner.AddVertex(vertex.Copy(new Vector3(dest.X, start.Y, start.Z), new Vector2(texX, texY)));
int c = m_owner.AddVertex(vertex.Copy(new Vector3(dest.X, dest.Y, start.Z), new Vector2(texX, 0f)));
int d = m_owner.AddVertex(vertex.Copy(new Vector3(start.X, dest.Y, start.Z), new Vector2(0f, 0f)));
this.AddTriangle(a, c, b);
this.AddTriangle(a, d, c);
//Right side
a = m_owner.AddVertex(vertex.Copy(new Vector3(dest.X, start.Y, start.Z), new Vector3(1f, 0f, 0f), new Vector2(0f, texY)));
b = m_owner.AddVertex(vertex.Copy(new Vector3(dest.X, start.Y, dest.Z), new Vector3(1f, 0f, 0f), new Vector2(texZ, texY)));
c = m_owner.AddVertex(vertex.Copy(new Vector3(dest.X, dest.Y, dest.Z), new Vector3(1f, 0f, 0f), new Vector2(texZ, 0f)));
d = m_owner.AddVertex(vertex.Copy(new Vector3(dest.X, dest.Y, start.Z), new Vector3(1f, 0f, 0f), new Vector2(0f, 0f)));
this.AddTriangle(a, c, b);
this.AddTriangle(a, d, c);
//Back side
a = m_owner.AddVertex(vertex.Copy(new Vector3(dest.X, start.Y, dest.Z), new Vector3(0f, 0f, 1f), new Vector2(0f, texY)));
b = m_owner.AddVertex(vertex.Copy(new Vector3(start.X, start.Y, dest.Z), new Vector3(0f, 0f, 1f), new Vector2(texX, texY)));
c = m_owner.AddVertex(vertex.Copy(new Vector3(start.X, dest.Y, dest.Z), new Vector3(0f, 0f, 1f), new Vector2(texX, 0f)));
d = m_owner.AddVertex(vertex.Copy(new Vector3(dest.X, dest.Y, dest.Z), new Vector3(0f, 0f, 1f), new Vector2(0f, 0f)));
this.AddTriangle(a, c, b);
this.AddTriangle(a, d, c);
//Left side
a = m_owner.AddVertex(vertex.Copy(new Vector3(start.X, start.Y, dest.Z), new Vector3(-1f, 0f, 0f), new Vector2(0f, texY)));
b = m_owner.AddVertex(vertex.Copy(new Vector3(start.X, start.Y, start.Z), new Vector3(-1f, 0f, 0f), new Vector2(texZ, texY)));
c = m_owner.AddVertex(vertex.Copy(new Vector3(start.X, dest.Y, start.Z), new Vector3(-1f, 0f, 0f), new Vector2(texZ, 0f)));
d = m_owner.AddVertex(vertex.Copy(new Vector3(start.X, dest.Y, dest.Z), new Vector3(-1f, 0f, 0f), new Vector2(0f, 0f)));
this.AddTriangle(a, c, b);
this.AddTriangle(a, d, c);
result.VertexCount = (int)(m_owner.CountVertices - result.StartVertex);
return(result);
}
/// <summary>
/// Builds a cube into this VertexStructure (this cube is built up of 24 vertices, so texture coordinates and normals are set)
/// </summary>
/// <param name="start">Start point of the cube</param>
/// <param name="size">Size of the cube</param>
/// <param name="color">Color of the cube</param>
public BuiltVerticesRange BuildCube24V(Vector3 start, Vector3 size, Color4 color)
{
BuiltVerticesRange result = new BuiltVerticesRange(m_owner);
result.Merge(this.BuildCubeSides16V(start, size, color));
result.Merge(this.BuildCubeTop4V(start, size, color));
result.Merge(this.BuildCubeBottom4V(start, size, color));
return(result);
}
/// <summary>
/// Merges this structure with the given one.
/// This method does only work if the given structure does begin after the end of the current one.
/// </summary>
/// <param name="otherRange">The other range to merge with.</param>
public void Merge(BuiltVerticesRange otherRange)
{
if (VertexCount <= 0)
{
StartVertex = otherRange.StartVertex;
VertexCount = otherRange.VertexCount;
}
else
{
if (StartVertex + VertexCount != otherRange.StartVertex)
{
throw new SeeingSharpGraphicsException("Unable to merge given vertex ranges!");
}
VertexCount = (int)(VertexCount + otherRange.VertexCount);
}
}
/// <summary>
/// Builds a cube of 4 vertices and a defined hight.
/// </summary>
/// <param name="topA"></param>
/// <param name="topB"></param>
/// <param name="topC"></param>
/// <param name="topD"></param>
/// <param name="heigh"></param>
/// <param name="color"></param>
public BuiltVerticesRange BuildCube24V(Vector3 topA, Vector3 topB, Vector3 topC, Vector3 topD, float heigh, Color4 color)
{
BuiltVerticesRange result = new BuiltVerticesRange(m_owner);
result.StartVertex = m_owner.CountVertices;
int startTriangleIndex = this.CountTriangles;
// Calculate texture coordinates
Vector3 size = new Vector3(
(topB - topA).Length(),
Math.Abs(heigh),
(topC - topB).Length());
float texX = 1f;
float texY = 1f;
float texZ = 1f;
if (m_tileSize != Vector2.Zero)
{
texX = size.X / m_tileSize.X;
texY = size.Y / m_tileSize.Y;
texZ = size.Z / m_tileSize.X;
}
// Calculate bottom vectors
Vector3 bottomA = new Vector3(topA.X, topA.Y - heigh, topA.Z);
Vector3 bottomB = new Vector3(topB.X, topB.Y - heigh, topB.Z);
Vector3 bottomC = new Vector3(topC.X, topC.Y - heigh, topC.Z);
Vector3 bottomD = new Vector3(topD.X, topD.Y - heigh, topD.Z);
// Build Top side
Vertex vertex = new Vertex(topA, color, new Vector2(texX, 0f), new Vector3(0f, 1f, 0f));
int a = m_owner.AddVertex(vertex);
int b = m_owner.AddVertex(vertex.Copy(topB, new Vector2(texX, texY)));
int c = m_owner.AddVertex(vertex.Copy(topC, new Vector2(0f, texY)));
int d = m_owner.AddVertex(vertex.Copy(topD, new Vector2(0f, 0f)));
this.AddTriangle(a, c, b);
this.AddTriangle(a, d, c);
// Build Bottom side
vertex = new Vertex(topA, color, new Vector2(0f, 0f), new Vector3(0f, -1f, 0f));
a = m_owner.AddVertex(vertex);
b = m_owner.AddVertex(vertex.Copy(topD, new Vector2(texX, 0f)));
c = m_owner.AddVertex(vertex.Copy(topC, new Vector2(texX, texY)));
d = m_owner.AddVertex(vertex.Copy(topB, new Vector2(0f, texY)));
this.AddTriangle(a, c, b);
this.AddTriangle(a, d, c);
// Build Front side
vertex = new Vertex(topA, color, new Vector2(0f, texY), new Vector3(0f, 0f, -1f));
a = m_owner.AddVertex(vertex);
b = m_owner.AddVertex(vertex.Copy(topB, new Vector2(texX, texY)));
c = m_owner.AddVertex(vertex.Copy(bottomB, new Vector2(texX, 0f)));
d = m_owner.AddVertex(vertex.Copy(bottomA, new Vector2(0f, 0f)));
this.AddTriangle(a, c, b);
this.AddTriangle(a, d, c);
// Build Right side
a = m_owner.AddVertex(vertex.Copy(topB, new Vector3(1f, 0f, 0f), new Vector2(0f, texY)));
b = m_owner.AddVertex(vertex.Copy(topC, new Vector3(1f, 0f, 0f), new Vector2(texZ, texY)));
c = m_owner.AddVertex(vertex.Copy(bottomC, new Vector3(1f, 0f, 0f), new Vector2(texZ, 0f)));
d = m_owner.AddVertex(vertex.Copy(bottomB, new Vector3(1f, 0f, 0f), new Vector2(0f, 0f)));
this.AddTriangle(a, c, b);
this.AddTriangle(a, d, c);
// Build Back side
a = m_owner.AddVertex(vertex.Copy(topC, new Vector3(0f, 0f, 1f), new Vector2(0f, texY)));
b = m_owner.AddVertex(vertex.Copy(topD, new Vector3(0f, 0f, 1f), new Vector2(texX, texY)));
c = m_owner.AddVertex(vertex.Copy(bottomD, new Vector3(0f, 0f, 1f), new Vector2(texX, 0f)));
d = m_owner.AddVertex(vertex.Copy(bottomC, new Vector3(0f, 0f, 1f), new Vector2(0f, 0f)));
this.AddTriangle(a, c, b);
this.AddTriangle(a, d, c);
// Build Left side
a = m_owner.AddVertex(vertex.Copy(topD, new Vector3(-1f, 0f, 0f), new Vector2(0f, texY)));
b = m_owner.AddVertex(vertex.Copy(topA, new Vector3(-1f, 0f, 0f), new Vector2(texZ, texY)));
c = m_owner.AddVertex(vertex.Copy(bottomA, new Vector3(-1f, 0f, 0f), new Vector2(texZ, 0f)));
d = m_owner.AddVertex(vertex.Copy(bottomD, new Vector3(-1f, 0f, 0f), new Vector2(0f, 0f)));
this.AddTriangle(a, c, b);
this.AddTriangle(a, d, c);
// Calculate normals finally
this.CalculateNormalsFlat(startTriangleIndex, this.CountTriangles - startTriangleIndex);
result.VertexCount = (int)(m_owner.CountVertices - result.StartVertex);
return(result);
}
