private void Subdivide( double Scale, ref VertexT2dN3dV3d first, ref VertexT2dN3dV3d second, ref VertexT2dN3dV3d third, out Chunk c )
{
c = new Chunk(6, 12);
c.Vertices[0] = first;
Vector3d.Lerp(ref first.Position, ref second.Position, 0.5,out c.Vertices[1].Normal );
c.Vertices[1].Normal.Normalize();
c.Vertices[1].Position = c.Vertices[1].Normal * Scale;
OpenTK.Vector2d.Lerp(ref first.TexCoord, ref second.TexCoord, 0.5, out c.Vertices[1].TexCoord);
Vector3d.Lerp( ref third.Position, ref first.Position, 0.5, out c.Vertices[2].Normal );
c.Vertices[2].Normal.Normalize();
c.Vertices[2].Position = c.Vertices[2].Normal * Scale;
OpenTK.Vector2d.Lerp(ref third.TexCoord, ref first.TexCoord, 0.5, out c.Vertices[2].TexCoord);
c.Vertices[3] = second;
Vector3d.Lerp( ref second.Position, ref third.Position, 0.5, out c.Vertices[4].Normal );
c.Vertices[4].Normal.Normalize();
c.Vertices[4].Position = c.Vertices[4].Normal * Scale;
OpenTK.Vector2d.Lerp(ref second.TexCoord, ref third.TexCoord, 0.5, out c.Vertices[4].TexCoord);
c.Vertices[5] = third;
#region Indices
c.Indices[0]=0;
c.Indices[1]=1;
c.Indices[2]=2;
c.Indices[3]=2;
c.Indices[4]=1;
c.Indices[5]=4;
c.Indices[6]=1;
c.Indices[7]=3;
c.Indices[8]=4;
c.Indices[9]=2;
c.Indices[10]=4;
c.Indices[11]=5;
#endregion Indices
}
private void DrawSide( eSides side, ref List<Chunk> chunks )
{
#region Setup constants for current direction
double _Zero = 0.0; // 0/3
double _Three = 0.3333333333333; // 1/3
double _Six = 0.66666666666666; // 2/3
double _One = 1.0; // 3/3
double ThirdLength = SideLength / 3f;
Vector3d C0 = Center + new Vector3d( -SideLength, -SideLength, +SideLength );
Vector3d C1 = Center + new Vector3d( +SideLength, -SideLength, +SideLength );
Vector3d C2 = Center + new Vector3d( +SideLength, +SideLength, +SideLength );
Vector3d C3 = Center + new Vector3d( -SideLength, +SideLength, +SideLength );
Vector3d C4 = Center + new Vector3d( -SideLength, -SideLength, -SideLength );
Vector3d C5 = Center + new Vector3d( +SideLength, -SideLength, -SideLength );
Vector3d C6 = Center + new Vector3d( +SideLength, +SideLength, -SideLength );
Vector3d C7 = Center + new Vector3d( -SideLength, +SideLength, -SideLength );
Vector3d P0, P1, P2, P3, P4, P5, P6, P7;
switch ( side )
{
case eSides.Front:
P0 = C0;
P1 = C1;
P2 = C2;
P3 = C3;
P4 = C4;
P5 = C5;
P6 = C6;
P7 = C7;
break;
case eSides.Back:
P0 = C5;
P1 = C4;
P2 = C7;
P3 = C6;
P4 = C1;
P5 = C0;
P6 = C3;
P7 = C2;
break;
case eSides.Right:
P0 = C1;
P1 = C5;
P2 = C6;
P3 = C2;
P4 = C0;
P5 = C4;
P6 = C7;
P7 = C3;
break;
case eSides.Left:
P0 = C4;
P1 = C0;
P2 = C3;
P3 = C7;
P4 = C5;
P5 = C1;
P6 = C2;
P7 = C6;
break;
case eSides.Top:
P0 = C3;
P1 = C2;
P2 = C6;
P3 = C7;
P4 = C0;
P5 = C1;
P6 = C5;
P7 = C4;
break;
case eSides.Bottom:
P0 = C1;
P1 = C0;
P2 = C4;
P3 = C5;
P4 = C2;
P5 = C3;
P6 = C7;
P7 = C6;
break;
default:
throw new NotImplementedException( "Unknown enum value: " + side );
}
#endregion Setup constants for current direction
#region Set Normal
Vector3d FaceNormal;
switch ( side )
{
case eSides.Front:
FaceNormal = Vector3d.UnitZ;
break;
case eSides.Back:
FaceNormal = -Vector3d.UnitZ;
break;
case eSides.Right:
FaceNormal = Vector3d.UnitX;
break;
case eSides.Left:
FaceNormal = -Vector3d.UnitX;
break;
case eSides.Top:
FaceNormal = Vector3d.UnitY;
break;
case eSides.Bottom:
FaceNormal = -Vector3d.UnitY;
break;
default:
throw new NotImplementedException( "Unknown enum value: " + side );
}
#endregion Set Normal
bool FaceIsVisible = false;
foreach ( eSides s in VisibleSides )
{
if ( s == side )
{
FaceIsVisible = true;
break;
}
}
if ( FaceIsVisible )
{
#region Define Layer1 Vertices
Chunk Layer1 = new Chunk( 8, 8 * 3 );
Layer1.Vertices[0].TexCoord = new OpenTK.Vector2d(_Zero, _Zero);
Layer1.Vertices[0].Normal = FaceNormal;
Layer1.Vertices[0].Position = P0;
Layer1.Vertices[1].TexCoord = new OpenTK.Vector2d(_One, _Zero);
Layer1.Vertices[1].Normal = FaceNormal;
Layer1.Vertices[1].Position = P1;
Layer1.Vertices[2].TexCoord = new OpenTK.Vector2d(_One, _One);
Layer1.Vertices[2].Normal = FaceNormal;
Layer1.Vertices[2].Position = P2;
Layer1.Vertices[3].TexCoord = new OpenTK.Vector2d(_Zero, _One);
Layer1.Vertices[3].Normal = FaceNormal;
Layer1.Vertices[3].Position = P3;
Layer1.Vertices[4].TexCoord = new OpenTK.Vector2d(_Three, _Three);
Layer1.Vertices[4].Normal = FaceNormal;
Vector3d.Lerp( ref P0, ref P2, _Three, out Layer1.Vertices[4].Position );
Layer1.Vertices[5].TexCoord = new OpenTK.Vector2d(_Six, _Three);
Layer1.Vertices[5].Normal = FaceNormal;
Vector3d.Lerp( ref P1, ref P3, _Three, out Layer1.Vertices[5].Position );
Layer1.Vertices[6].TexCoord = new OpenTK.Vector2d(_Six, _Six);
Layer1.Vertices[6].Normal = FaceNormal;
Vector3d.Lerp( ref P0, ref P2, _Six, out Layer1.Vertices[6].Position );
Layer1.Vertices[7].TexCoord = new OpenTK.Vector2d(_Three, _Six);
Layer1.Vertices[7].Normal = FaceNormal;
Vector3d.Lerp( ref P1, ref P3, _Six, out Layer1.Vertices[7].Position );
#endregion Define Layer1 Vertices
#region Define Layer1 Indices
Layer1.Indices[0] = 0;
Layer1.Indices[1] = 5;
Layer1.Indices[2] = 4;
Layer1.Indices[3] = 0;
Layer1.Indices[4] = 1;
Layer1.Indices[5] = 5;
Layer1.Indices[6] = 5;
Layer1.Indices[7] = 1;
Layer1.Indices[8] = 2;
Layer1.Indices[9] = 6;
Layer1.Indices[10] = 5;
Layer1.Indices[11] = 2;
Layer1.Indices[12] = 7;
Layer1.Indices[13] = 6;
Layer1.Indices[14] = 2;
Layer1.Indices[15] = 3;
Layer1.Indices[16] = 7;
Layer1.Indices[17] = 2;
Layer1.Indices[18] = 0;
Layer1.Indices[19] = 7;
Layer1.Indices[20] = 3;
Layer1.Indices[21] = 0;
Layer1.Indices[22] = 4;
Layer1.Indices[23] = 7;
chunks.Add( Layer1 );
#endregion Define Layer1 Indices
}
#region Define Layer2 Vertices
Chunk Layer2 = new Chunk( 12, 8 * 3 );
Vector3d T0, T1, T2, T3;
Vector3d.Lerp( ref P0, ref P4, _Six, out T0 );
Vector3d.Lerp( ref P1, ref P5, _Six, out T1 );
Vector3d.Lerp( ref P2, ref P6, _Six, out T2 );
Vector3d.Lerp( ref P3, ref P7, _Six, out T3 );
Layer2.Vertices[0].TexCoord = new OpenTK.Vector2d(_Three, _Zero);
Layer2.Vertices[0].Normal = FaceNormal;
Vector3d.Lerp( ref T0, ref T1, _Three, out Layer2.Vertices[0].Position );
Layer2.Vertices[1].TexCoord = new OpenTK.Vector2d(_Six, _Zero);
Layer2.Vertices[1].Normal = FaceNormal;
Vector3d.Lerp( ref T0, ref T1, _Six, out Layer2.Vertices[1].Position );
Layer2.Vertices[3].TexCoord = new OpenTK.Vector2d(_One, _Three);
Layer2.Vertices[3].Normal = FaceNormal;
Vector3d.Lerp( ref T1, ref T2, _Three, out Layer2.Vertices[3].Position );
Layer2.Vertices[4].TexCoord = new OpenTK.Vector2d(_One, _Six);
Layer2.Vertices[4].Normal = FaceNormal;
Vector3d.Lerp( ref T1, ref T2, _Six, out Layer2.Vertices[4].Position );
Layer2.Vertices[6].TexCoord = new OpenTK.Vector2d(_Six, _One);
Layer2.Vertices[6].Normal = FaceNormal;
Vector3d.Lerp( ref T2, ref T3, _Three, out Layer2.Vertices[6].Position );
Layer2.Vertices[7].TexCoord = new OpenTK.Vector2d(_Three, _One);
Layer2.Vertices[7].Normal = FaceNormal;
Vector3d.Lerp( ref T2, ref T3, _Six, out Layer2.Vertices[7].Position );
Layer2.Vertices[9].TexCoord = new OpenTK.Vector2d(_Zero, _Six);
Layer2.Vertices[9].Normal = FaceNormal;
Vector3d.Lerp( ref T3, ref T0, _Three, out Layer2.Vertices[9].Position );
Layer2.Vertices[10].TexCoord = new OpenTK.Vector2d(_Zero, _Three);
Layer2.Vertices[10].Normal = FaceNormal;
Vector3d.Lerp( ref T3, ref T0, _Six, out Layer2.Vertices[10].Position );
Layer2.Vertices[2].TexCoord = new OpenTK.Vector2d(_Six, _Three);
Layer2.Vertices[2].Normal = FaceNormal;
Vector3d.Lerp( ref Layer2.Vertices[1].Position, ref Layer2.Vertices[6].Position, _Three, out Layer2.Vertices[2].Position );
Layer2.Vertices[5].TexCoord = new OpenTK.Vector2d(_Six, _Six);
Layer2.Vertices[5].Normal = FaceNormal;
Vector3d.Lerp( ref Layer2.Vertices[1].Position, ref Layer2.Vertices[6].Position, _Six, out Layer2.Vertices[5].Position );
Layer2.Vertices[8].TexCoord = new OpenTK.Vector2d(_Three, _Six);
Layer2.Vertices[8].Normal = FaceNormal;
Vector3d.Lerp( ref Layer2.Vertices[7].Position, ref Layer2.Vertices[0].Position, _Three, out Layer2.Vertices[8].Position );
Layer2.Vertices[11].TexCoord = new OpenTK.Vector2d(_Three, _Three);
Layer2.Vertices[11].Normal = FaceNormal;
Vector3d.Lerp( ref Layer2.Vertices[7].Position, ref Layer2.Vertices[0].Position, _Six, out Layer2.Vertices[11].Position );
#endregion Define Layer2 Vertices
#region Define Layer2 Indices
Layer2.Indices[0] = 0;
Layer2.Indices[1] = 2;
Layer2.Indices[2] = 11;
Layer2.Indices[3] = 0;
Layer2.Indices[4] = 1;
Layer2.Indices[5] = 2;
Layer2.Indices[6] = 2;
Layer2.Indices[7] = 3;
Layer2.Indices[8] = 4;
Layer2.Indices[9] = 2;
Layer2.Indices[10] = 4;
Layer2.Indices[11] = 5;
Layer2.Indices[12] = 5;
Layer2.Indices[13] = 6;
Layer2.Indices[14] = 8;
Layer2.Indices[15] = 8;
Layer2.Indices[16] = 6;
Layer2.Indices[17] = 7;
Layer2.Indices[18] = 11;
Layer2.Indices[19] = 8;
Layer2.Indices[20] = 10;
Layer2.Indices[21] = 10;
Layer2.Indices[22] = 8;
Layer2.Indices[23] = 9;
chunks.Add( Layer2 );
#endregion Define Layer2 Indices
}
public ChamferCube(double Width, double Height, double Length, SubDivs subdivs, double radius)
: base( )
{
SlicedSphere.eSubdivisions sphereSubDivs = SlicedSphere.eSubdivisions.Zero;
uint hoseSubDivs = 0;
switch (subdivs)
{
case SubDivs.Zero:
sphereSubDivs = SlicedSphere.eSubdivisions.Zero;
hoseSubDivs = 0;
break;
case SubDivs.One:
sphereSubDivs = SlicedSphere.eSubdivisions.One;
hoseSubDivs = 1;
break;
case SubDivs.Two:
sphereSubDivs = SlicedSphere.eSubdivisions.Two;
hoseSubDivs = 3;
break;
case SubDivs.Three:
sphereSubDivs = SlicedSphere.eSubdivisions.Three;
hoseSubDivs = 7;
break;
case SubDivs.Four:
sphereSubDivs = SlicedSphere.eSubdivisions.Four;
hoseSubDivs = 15;
break;
}
#region Temporary Storage
List <Chunk> AllChunks = new List <Chunk>();
OpenTK.Graphics.OpenGL.BeginMode TemporaryMode;
VertexT2dN3dV3d[] TemporaryVBO;
uint[] TemporaryIBO;
#endregion Temporary Storage
Vector3d FrontTopRightEdge = new Vector3d(+Width - radius, +Height - radius, +Length - radius);
Vector3d FrontTopLeftEdge = new Vector3d(+Width - radius, +Height - radius, -Length + radius);
Vector3d FrontBottomRightEdge = new Vector3d(+Width - radius, -Height + radius, +Length - radius);
Vector3d FrontBottomLeftEdge = new Vector3d(+Width - radius, -Height + radius, -Length + radius);
Vector3d BackTopRightEdge = new Vector3d(-Width + radius, +Height - radius, +Length - radius);
Vector3d BackTopLeftEdge = new Vector3d(-Width + radius, +Height - radius, -Length + radius);
Vector3d BackBottomRightEdge = new Vector3d(-Width + radius, -Height + radius, +Length - radius);
Vector3d BackBottomLeftEdge = new Vector3d(-Width + radius, -Height + radius, -Length + radius);
#region 8 sliced Spheres
SlicedSphere tempSphere;
Vector3d tempVector = Vector3d.Zero;
SlicedSphere.eDir[] tempEdge = new SlicedSphere.eDir[1];
for (int i = 0; i < 8; i++)
{
switch (i)
{
case 0:
tempVector = FrontTopRightEdge;
tempEdge = new SlicedSphere.eDir[] { SlicedSphere.eDir.FrontTopRight };
break;
case 1:
tempVector = FrontTopLeftEdge;
tempEdge = new SlicedSphere.eDir[] { SlicedSphere.eDir.FrontTopLeft };
break;
case 2:
tempVector = FrontBottomRightEdge;
tempEdge = new SlicedSphere.eDir[] { SlicedSphere.eDir.FrontBottomRight };
break;
case 3:
tempVector = FrontBottomLeftEdge;
tempEdge = new SlicedSphere.eDir[] { SlicedSphere.eDir.FrontBottomLeft };
break;
case 4:
tempVector = BackBottomRightEdge;
tempEdge = new SlicedSphere.eDir[] { SlicedSphere.eDir.BackBottomRight };
break;
case 5:
tempVector = BackBottomLeftEdge;
tempEdge = new SlicedSphere.eDir[] { SlicedSphere.eDir.BackBottomLeft };
break;
case 6:
tempVector = BackTopRightEdge;
tempEdge = new SlicedSphere.eDir[] { SlicedSphere.eDir.BackTopRight };
break;
case 7:
tempVector = BackTopLeftEdge;
tempEdge = new SlicedSphere.eDir[] { SlicedSphere.eDir.BackTopLeft };
break;
}
tempSphere = new SlicedSphere(radius,
tempVector,
sphereSubDivs,
tempEdge);
tempSphere.GetArraysforVBO(out TemporaryMode, out TemporaryVBO, out TemporaryIBO);
tempSphere.Dispose();
AllChunks.Add(new Chunk(ref TemporaryVBO, ref TemporaryIBO));
}
#endregion 8 sliced Spheres
#region 12 sliced Hoses
SlicedHose tempHose;
SlicedHose.eSide tempSide = SlicedHose.eSide.BackBottom;
Vector3d tempHoseStart = Vector3d.Zero;
Vector3d tempHoseEnd = Vector3d.Zero;
for (int i = 0; i < 12; i++)
{
switch (i)
{
#region Around X Axis
case 0:
tempSide = SlicedHose.eSide.BottomRight;
tempHoseStart = BackBottomRightEdge;
tempHoseEnd = FrontBottomRightEdge;
break;
case 1:
tempSide = SlicedHose.eSide.TopRight;
tempHoseStart = BackTopRightEdge;
tempHoseEnd = FrontTopRightEdge;
break;
case 2:
tempSide = SlicedHose.eSide.TopLeft;
tempHoseStart = BackTopLeftEdge;
tempHoseEnd = FrontTopLeftEdge;
break;
case 3:
tempSide = SlicedHose.eSide.BottomLeft;
tempHoseStart = BackBottomLeftEdge;
tempHoseEnd = FrontBottomLeftEdge;
break;
#endregion Around X Axis
#region Around Y Axis
case 4:
tempSide = SlicedHose.eSide.FrontRight;
tempHoseStart = FrontBottomRightEdge;
tempHoseEnd = FrontTopRightEdge;
break;
case 5:
tempSide = SlicedHose.eSide.BackRight;
tempHoseStart = BackBottomRightEdge;
tempHoseEnd = BackTopRightEdge;
break;
case 6:
tempSide = SlicedHose.eSide.BackLeft;
tempHoseStart = BackBottomLeftEdge;
tempHoseEnd = BackTopLeftEdge;
break;
case 7:
tempSide = SlicedHose.eSide.FrontLeft;
tempHoseStart = FrontBottomLeftEdge;
tempHoseEnd = FrontTopLeftEdge;
break;
#endregion Around Y Axis
#region Around Z Axis
case 8:
tempSide = SlicedHose.eSide.FrontTop;
tempHoseStart = FrontTopRightEdge;
tempHoseEnd = FrontTopLeftEdge;
break;
case 9:
tempSide = SlicedHose.eSide.BackTop;
tempHoseStart = BackTopRightEdge;
tempHoseEnd = BackTopLeftEdge;
break;
case 10:
tempSide = SlicedHose.eSide.BackBottom;
tempHoseStart = BackBottomRightEdge;
tempHoseEnd = BackBottomLeftEdge;
break;
case 11:
tempSide = SlicedHose.eSide.FrontBottom;
tempHoseStart = FrontBottomRightEdge;
tempHoseEnd = FrontBottomLeftEdge;
break;
#endregion Around Z Axis
}
tempHose = new SlicedHose(tempSide,
hoseSubDivs,
radius,
tempHoseStart,
tempHoseEnd);
tempHose.GetArraysforVBO(out TemporaryMode, out TemporaryVBO, out TemporaryIBO);
tempHose.Dispose();
AllChunks.Add(new Chunk(ref TemporaryVBO, ref TemporaryIBO));
}
#endregion 12 sliced Hoses
#region 6 quads for the sides
VertexT2dN3dV3d[] tempVBO = new VertexT2dN3dV3d[4];
uint[] tempIBO = new uint[6] {
0, 1, 2, 0, 2, 3
}; // all quads share this IBO
// all quads use the same texcoords
tempVBO[0].TexCoord = new OpenTK.Vector2d(0.0, 1.0);
tempVBO[1].TexCoord = new OpenTK.Vector2d(0.0, 0.0);
tempVBO[2].TexCoord = new OpenTK.Vector2d(1.0, 0.0);
tempVBO[3].TexCoord = new OpenTK.Vector2d(1.0, 1.0);
// front face
tempVBO[0].Normal = tempVBO[1].Normal = tempVBO[2].Normal = tempVBO[3].Normal = Vector3d.UnitX;
tempVBO[0].Position = FrontTopRightEdge + new Vector3d(radius, 0.0, 0.0);
tempVBO[1].Position = FrontBottomRightEdge + new Vector3d(radius, 0.0, 0.0);
tempVBO[2].Position = FrontBottomLeftEdge + new Vector3d(radius, 0.0, 0.0);
tempVBO[3].Position = FrontTopLeftEdge + new Vector3d(radius, 0.0, 0.0);
AllChunks.Add(new Chunk(ref tempVBO, ref tempIBO));
// back face
tempVBO[0].Normal = tempVBO[1].Normal = tempVBO[2].Normal = tempVBO[3].Normal = -Vector3d.UnitX;
tempVBO[0].Position = BackTopLeftEdge - new Vector3d(radius, 0.0, 0.0);
tempVBO[1].Position = BackBottomLeftEdge - new Vector3d(radius, 0.0, 0.0);
tempVBO[2].Position = BackBottomRightEdge - new Vector3d(radius, 0.0, 0.0);
tempVBO[3].Position = BackTopRightEdge - new Vector3d(radius, 0.0, 0.0);
AllChunks.Add(new Chunk(ref tempVBO, ref tempIBO));
// top face
tempVBO[0].Normal = tempVBO[1].Normal = tempVBO[2].Normal = tempVBO[3].Normal = Vector3d.UnitY;
tempVBO[0].Position = BackTopRightEdge + new Vector3d(0.0, radius, 0.0);
tempVBO[1].Position = FrontTopRightEdge + new Vector3d(0.0, radius, 0.0);
tempVBO[2].Position = FrontTopLeftEdge + new Vector3d(0.0, radius, 0.0);
tempVBO[3].Position = BackTopLeftEdge + new Vector3d(0.0, radius, 0.0);
AllChunks.Add(new Chunk(ref tempVBO, ref tempIBO));
// bottom face
tempVBO[0].Normal = tempVBO[1].Normal = tempVBO[2].Normal = tempVBO[3].Normal = -Vector3d.UnitY;
tempVBO[0].Position = BackBottomLeftEdge - new Vector3d(0.0, radius, 0.0);
tempVBO[1].Position = FrontBottomLeftEdge - new Vector3d(0.0, radius, 0.0);
tempVBO[2].Position = FrontBottomRightEdge - new Vector3d(0.0, radius, 0.0);
tempVBO[3].Position = BackBottomRightEdge - new Vector3d(0.0, radius, 0.0);
AllChunks.Add(new Chunk(ref tempVBO, ref tempIBO));
// right face
tempVBO[0].Normal = tempVBO[1].Normal = tempVBO[2].Normal = tempVBO[3].Normal = Vector3d.UnitZ;
tempVBO[0].Position = BackTopRightEdge + new Vector3d(0.0, 0.0, radius);
tempVBO[1].Position = BackBottomRightEdge + new Vector3d(0.0, 0.0, radius);
tempVBO[2].Position = FrontBottomRightEdge + new Vector3d(0.0, 0.0, radius);
tempVBO[3].Position = FrontTopRightEdge + new Vector3d(0.0, 0.0, radius);
AllChunks.Add(new Chunk(ref tempVBO, ref tempIBO));
// left face
tempVBO[0].Normal = tempVBO[1].Normal = tempVBO[2].Normal = tempVBO[3].Normal = -Vector3d.UnitZ;
tempVBO[0].Position = FrontTopLeftEdge - new Vector3d(0.0, 0.0, radius);
tempVBO[1].Position = FrontBottomLeftEdge - new Vector3d(0.0, 0.0, radius);
tempVBO[2].Position = BackBottomLeftEdge - new Vector3d(0.0, 0.0, radius);
tempVBO[3].Position = BackTopLeftEdge - new Vector3d(0.0, 0.0, radius);
AllChunks.Add(new Chunk(ref tempVBO, ref tempIBO));
#endregion 6 quads for the sides
#region Final Assembly of Chunks
PrimitiveMode = OpenTK.Graphics.OpenGL.BeginMode.Triangles;
Chunk.GetArray(ref AllChunks, out VertexArray, out IndexArray);
AllChunks.Clear();
#endregion Final Assembly of Chunks
}
