protected override void Triangulate(DependencyPropertyChangedEventArgs args,
Point3DCollection vertices,
Vector3DCollection normals,
Int32Collection indices,
PointCollection textures)
{
vertices.Clear();
normals.Clear();
indices.Clear();
textures.Clear();
MeshGeometry3D mesh = MeshGenerator.Geometry;
foreach (Point3D vertex in mesh.Positions)
{
vertices.Add(vertex);
}
foreach (Vector3D normal in mesh.Normals)
{
normals.Add(normal);
}
foreach (int index in mesh.TriangleIndices)
{
indices.Add(index);
}
foreach (Point texture in mesh.TextureCoordinates)
{
textures.Add(texture);
}
}
/// <summary>
///
/// </summary>
/// <param name="args"></param>
/// <param name="vertices"></param>
/// <param name="normals"></param>
/// <param name="indices"></param>
/// <param name="textures"></param>
protected override void Triangulate(DependencyPropertyChangedEventArgs args,
Point3DCollection vertices,
Vector3DCollection normals,
Int32Collection indices,
PointCollection textures)
{
// Clear all four collections.
vertices.Clear();
normals.Clear();
indices.Clear();
textures.Clear();
// Fill the vertices, normals, and textures collections.
for (int stack = 0; stack <= Stacks; stack++)
{
double phi = Math.PI / 2 - stack * Math.PI / Stacks;
double y = Radius * Math.Sin(phi);
double scale = -Radius *Math.Cos(phi);
for (int slice = 0; slice <= Slices; slice++)
{
double theta = slice * 2 * Math.PI / Slices;
double x = scale * Math.Sin(theta);
double z = scale * Math.Cos(theta);
Vector3D normal = new Vector3D(x, y, z);
normals.Add(normal);
vertices.Add(normal.ToPoint3D());
textures.Add(new Point((double)slice / Slices,
(double)stack / Stacks));
}
}
// Fill the indices collection.
for (int stack = 0; stack < Stacks; stack++)
{
for (int slice = 0; slice < Slices; slice++)
{
if (stack != 0)
{
indices.Add((stack + 0) * (Slices + 1) + slice);
indices.Add((stack + 1) * (Slices + 1) + slice);
indices.Add((stack + 0) * (Slices + 1) + slice + 1);
}
if (stack != Stacks - 1)
{
indices.Add((stack + 0) * (Slices + 1) + slice + 1);
indices.Add((stack + 1) * (Slices + 1) + slice);
indices.Add((stack + 1) * (Slices + 1) + slice + 1);
}
}
}
}
/*
* // Static method called for any property change.
* static void PropertyChanged(DependencyObject obj,
* DependencyPropertyChangedEventArgs args)
* {
* (obj as TorusMesh).PropertyChanged(args);
* }
*/
/// <summary>
///
/// </summary>
/// <param name="args"></param>
/// <param name="vertices"></param>
/// <param name="normals"></param>
/// <param name="indices"></param>
/// <param name="textures"></param>
protected override void Triangulate(DependencyPropertyChangedEventArgs args,
Point3DCollection vertices,
Vector3DCollection normals,
Int32Collection indices,
PointCollection textures)
{
// Clear all four collections.
vertices.Clear();
normals.Clear();
indices.Clear();
textures.Clear();
// Fill the vertices, normals, and textures collections.
for (int stack = 0; stack <= Stacks; stack++)
{
double phi = stack * 2 * Math.PI / Stacks;
double xCenter = Radius * Math.Sin(phi);
double yCenter = Radius * Math.Cos(phi);
Point3D pointCenter = new Point3D(xCenter, yCenter, 0);
for (int slice = 0; slice <= Slices; slice++)
{
double theta = slice * 2 * Math.PI / Slices + Math.PI;
double x = (Radius + TubeRadius * Math.Cos(theta)) * Math.Sin(phi);
double y = (Radius + TubeRadius * Math.Cos(theta)) * Math.Cos(phi);
double z = -TubeRadius *Math.Sin(theta);
Point3D point = new Point3D(x, y, z);
vertices.Add(point);
normals.Add(point - pointCenter);
textures.Add(new Point((double)slice / Slices,
(double)stack / Stacks));
}
}
// Fill the indices collection.
for (int stack = 0; stack < Stacks; stack++)
{
for (int slice = 0; slice < Slices; slice++)
{
indices.Add((stack + 0) * (Slices + 1) + slice);
indices.Add((stack + 1) * (Slices + 1) + slice);
indices.Add((stack + 0) * (Slices + 1) + slice + 1);
indices.Add((stack + 0) * (Slices + 1) + slice + 1);
indices.Add((stack + 1) * (Slices + 1) + slice);
indices.Add((stack + 1) * (Slices + 1) + slice + 1);
}
}
}
protected override void Triangulate(DependencyPropertyChangedEventArgs args,
Point3DCollection vertices,
Vector3DCollection normals,
Int32Collection indices,
PointCollection textures)
{
vertices.Clear();
normals.Clear();
indices.Clear();
textures.Clear();
// Variables for vertices collection.
Vector3D UL = (Vector3D)UpperLeft;
Vector3D UR = (Vector3D)UpperRight;
Vector3D LL = (Vector3D)LowerLeft;
Vector3D LR = (Vector3D)LowerRight;
int product = Slices * Stacks;
// Variables for textures collection
Point ptOrigin = new Point(0, 0);
Vector vectSlice = (new Point(1, 0) - ptOrigin) / Slices;
Vector vectStack = (new Point(0, 1) - ptOrigin) / Stacks;
for (int stack = 0; stack <= Stacks; stack++)
{
for (int slice = 0; slice <= Slices; slice++)
{
vertices.Add((Point3D)(((Stacks - stack) * (Slices - slice) * UL +
stack * (Slices - slice) * LL +
(Stacks - stack) * slice * UR +
stack * slice * LR) / product));
textures.Add(ptOrigin + stack * vectStack + slice * vectSlice);
if (slice < Slices && stack < Stacks)
{
indices.Add((Slices + 1) * stack + slice);
indices.Add((Slices + 1) * (stack + 1) + slice);
indices.Add((Slices + 1) * stack + slice + 1);
indices.Add((Slices + 1) * stack + slice + 1);
indices.Add((Slices + 1) * (stack + 1) + slice);
indices.Add((Slices + 1) * (stack + 1) + slice + 1);
}
}
}
}
void PropertyChanged(DependencyPropertyChangedEventArgs args)
{
// Get references to all four collections.
Point3DCollection vertices = mesh.Positions;
Vector3DCollection normals = mesh.Normals;
Int32Collection indices = mesh.TriangleIndices;
PointCollection textures = mesh.TextureCoordinates;
// Set the MeshGeometry3D properties to null to inhibit notifications.
mesh.Positions = null;
mesh.Normals = null;
mesh.TriangleIndices = null;
mesh.TextureCoordinates = null;
// Clear the four collections.
vertices.Clear();
normals.Clear();
indices.Clear();
textures.Clear();
// Fill the vertices, normals, and textures collections.
for (int stack = 0; stack <= Stacks; stack++)
{
double phi = Math.PI / 2 - stack * Math.PI / Stacks;
double y = Radius * Math.Sin(phi);
double scale = -Radius *Math.Cos(phi);
for (int slice = 0; slice <= Slices; slice++)
{
double theta = slice * 2 * Math.PI / Slices;
double x = scale * Math.Sin(theta);
double z = scale * Math.Cos(theta);
Vector3D normal = new Vector3D(x, y, z);
normals.Add(normal);
vertices.Add(normal + Center);
textures.Add(new Point((double)slice / Slices,
(double)stack / Stacks));
}
}
// Fill the indices collection.
for (int stack = 0; stack < Stacks; stack++)
{
int top = (stack + 0) * (Slices + 1);
int bot = (stack + 1) * (Slices + 1);
for (int slice = 0; slice < Slices; slice++)
{
if (stack != 0)
{
indices.Add(top + slice);
indices.Add(bot + slice);
indices.Add(top + slice + 1);
}
if (stack != Stacks - 1)
{
indices.Add(top + slice + 1);
indices.Add(bot + slice);
indices.Add(bot + slice + 1);
}
}
}
// Set the collections back to the properties.
mesh.TextureCoordinates = textures;
mesh.TriangleIndices = indices;
mesh.Normals = normals;
mesh.Positions = vertices;
}
/// <summary>
///
/// </summary>
/// <param name="args"></param>
/// <param name="vertices"></param>
/// <param name="normals"></param>
/// <param name="indices"></param>
/// <param name="textures"></param>
protected override void Triangulate(DependencyPropertyChangedEventArgs args,
Point3DCollection vertices,
Vector3DCollection normals,
Int32Collection indices,
PointCollection textures)
{
// Clear all four collections.
vertices.Clear();
normals.Clear();
indices.Clear();
textures.Clear();
double x, y, z;
int indexBase = 0;
// Front side.
// -----------
z = Depth / 2;
// Fill the vertices, normals, textures collections.
for (int stack = 0; stack <= Stacks; stack++)
{
y = Height / 2 - stack * Height / Stacks;
for (int slice = 0; slice <= Slices; slice++)
{
x = -Width / 2 + slice * Width / Slices;
Point3D point = new Point3D(x, y, z);
vertices.Add(point);
normals.Add(point - new Point3D(x, y, 0));
textures.Add(new Point((double)slice / Slices,
(double)stack / Stacks));
}
}
// Fill the indices collection.
for (int stack = 0; stack < Stacks; stack++)
{
for (int slice = 0; slice < Slices; slice++)
{
indices.Add((stack + 0) * (Slices + 1) + slice);
indices.Add((stack + 1) * (Slices + 1) + slice);
indices.Add((stack + 0) * (Slices + 1) + slice + 1);
indices.Add((stack + 0) * (Slices + 1) + slice + 1);
indices.Add((stack + 1) * (Slices + 1) + slice);
indices.Add((stack + 1) * (Slices + 1) + slice + 1);
}
}
// Rear side.
// -----------
indexBase = vertices.Count;
z = -Depth / 2;
// Fill the vertices, normals, textures collections.
for (int stack = 0; stack <= Stacks; stack++)
{
y = Height / 2 - stack * Height / Stacks;
for (int slice = 0; slice <= Slices; slice++)
{
x = Width / 2 - slice * Width / Slices;
Point3D point = new Point3D(x, y, z);
vertices.Add(point);
normals.Add(point - new Point3D(x, y, 0));
textures.Add(new Point((double)slice / Slices,
(double)stack / Stacks));
}
}
// Fill the indices collection.
for (int stack = 0; stack < Stacks; stack++)
{
for (int slice = 0; slice < Slices; slice++)
{
indices.Add(indexBase + (stack + 0) * (Slices + 1) + slice);
indices.Add(indexBase + (stack + 1) * (Slices + 1) + slice);
indices.Add(indexBase + (stack + 0) * (Slices + 1) + slice + 1);
indices.Add(indexBase + (stack + 0) * (Slices + 1) + slice + 1);
indices.Add(indexBase + (stack + 1) * (Slices + 1) + slice);
indices.Add(indexBase + (stack + 1) * (Slices + 1) + slice + 1);
}
}
// Left side.
// -----------
indexBase = vertices.Count;
x = -Width / 2;
// Fill the vertices, normals, textures collections.
for (int stack = 0; stack <= Stacks; stack++)
{
y = Height / 2 - stack * Height / Stacks;
for (int layer = 0; layer <= Layers; layer++)
{
z = -Depth / 2 + layer * Depth / Layers;
Point3D point = new Point3D(x, y, z);
vertices.Add(point);
normals.Add(point - new Point3D(0, y, z));
textures.Add(new Point((double)layer / Layers,
(double)stack / Stacks));
}
}
// Fill the indices collection.
for (int stack = 0; stack < Stacks; stack++)
{
for (int layer = 0; layer < Layers; layer++)
{
indices.Add(indexBase + (stack + 0) * (Layers + 1) + layer);
indices.Add(indexBase + (stack + 1) * (Layers + 1) + layer);
indices.Add(indexBase + (stack + 0) * (Layers + 1) + layer + 1);
indices.Add(indexBase + (stack + 0) * (Layers + 1) + layer + 1);
indices.Add(indexBase + (stack + 1) * (Layers + 1) + layer);
indices.Add(indexBase + (stack + 1) * (Layers + 1) + layer + 1);
}
}
// Right side.
// -----------
indexBase = vertices.Count;
x = Width / 2;
// Fill the vertices, normals, textures collections.
for (int stack = 0; stack <= Stacks; stack++)
{
y = Height / 2 - stack * Height / Stacks;
for (int layer = 0; layer <= Layers; layer++)
{
z = Depth / 2 - layer * Depth / Layers;
Point3D point = new Point3D(x, y, z);
vertices.Add(point);
normals.Add(point - new Point3D(0, y, z));
textures.Add(new Point((double)layer / Layers,
(double)stack / Stacks));
}
}
// Fill the indices collection.
for (int stack = 0; stack < Stacks; stack++)
{
for (int layer = 0; layer < Layers; layer++)
{
indices.Add(indexBase + (stack + 0) * (Layers + 1) + layer);
indices.Add(indexBase + (stack + 1) * (Layers + 1) + layer);
indices.Add(indexBase + (stack + 0) * (Layers + 1) + layer + 1);
indices.Add(indexBase + (stack + 0) * (Layers + 1) + layer + 1);
indices.Add(indexBase + (stack + 1) * (Layers + 1) + layer);
indices.Add(indexBase + (stack + 1) * (Layers + 1) + layer + 1);
}
}
// Top side.
// -----------
indexBase = vertices.Count;
y = Height / 2;
// Fill the vertices, normals, textures collections.
for (int layer = 0; layer <= Layers; layer++)
{
z = -Depth / 2 + layer * Depth / Layers;
for (int slice = 0; slice <= Slices; slice++)
{
x = -Width / 2 + slice * Width / Slices;
Point3D point = new Point3D(x, y, z);
vertices.Add(point);
normals.Add(point - new Point3D(x, 0, z));
textures.Add(new Point((double)slice / Slices,
(double)layer / Layers));
}
}
// Fill the indices collection.
for (int layer = 0; layer < Layers; layer++)
{
for (int slice = 0; slice < Slices; slice++)
{
indices.Add(indexBase + (layer + 0) * (Slices + 1) + slice);
indices.Add(indexBase + (layer + 1) * (Slices + 1) + slice);
indices.Add(indexBase + (layer + 0) * (Slices + 1) + slice + 1);
indices.Add(indexBase + (layer + 0) * (Slices + 1) + slice + 1);
indices.Add(indexBase + (layer + 1) * (Slices + 1) + slice);
indices.Add(indexBase + (layer + 1) * (Slices + 1) + slice + 1);
}
}
// Bottom side.
// -----------
indexBase = vertices.Count;
y = -Height / 2;
// Fill the vertices, normals, textures collections.
for (int layer = 0; layer <= Layers; layer++)
{
z = Depth / 2 - layer * Depth / Layers;
for (int slice = 0; slice <= Slices; slice++)
{
x = -Width / 2 + slice * Width / Slices;
Point3D point = new Point3D(x, y, z);
vertices.Add(point);
normals.Add(point - new Point3D(x, 0, z));
textures.Add(new Point((double)slice / Slices,
(double)layer / Layers));
}
}
// Fill the indices collection.
for (int layer = 0; layer < Layers; layer++)
{
for (int slice = 0; slice < Slices; slice++)
{
indices.Add(indexBase + (layer + 0) * (Slices + 1) + slice);
indices.Add(indexBase + (layer + 1) * (Slices + 1) + slice);
indices.Add(indexBase + (layer + 0) * (Slices + 1) + slice + 1);
indices.Add(indexBase + (layer + 0) * (Slices + 1) + slice + 1);
indices.Add(indexBase + (layer + 1) * (Slices + 1) + slice);
indices.Add(indexBase + (layer + 1) * (Slices + 1) + slice + 1);
}
}
}
/// <summary>
///
/// </summary>
/// <param name="args"></param>
/// <param name="vertices"></param>
/// <param name="normals"></param>
/// <param name="indices"></param>
/// <param name="textures"></param>
protected override void Triangulate(DependencyPropertyChangedEventArgs args,
Point3DCollection vertices,
Vector3DCollection normals,
Int32Collection indices,
PointCollection textures)
{
// Clear all four collections.
vertices.Clear();
normals.Clear();
indices.Clear();
textures.Clear();
double x, y;
int indexBase = 0;
// Front side.
// -----------
// Fill the vertices, normals, textures collections.
for (int stack = 0; stack <= Stacks; stack++)
{
y = Height / 2 - stack * Height / Stacks;
for (int slice = 0; slice <= Slices; slice++)
{
x = -Width / 2 + slice * Width / Slices;
Point3D point = new Point3D(x, y, 0);
vertices.Add(point);
normals.Add(point - new Point3D(x, y, 0));
textures.Add(new Point((double)slice / Slices,
(double)stack / Stacks));
}
}
// Fill the indices collection.
for (int stack = 0; stack < Stacks; stack++)
{
for (int slice = 0; slice < Slices; slice++)
{
indices.Add((stack + 0) * (Slices + 1) + slice);
indices.Add((stack + 1) * (Slices + 1) + slice);
indices.Add((stack + 0) * (Slices + 1) + slice + 1);
indices.Add((stack + 0) * (Slices + 1) + slice + 1);
indices.Add((stack + 1) * (Slices + 1) + slice);
indices.Add((stack + 1) * (Slices + 1) + slice + 1);
}
}
// Rear side.
// -----------
indexBase = vertices.Count;
// Fill the vertices, normals, textures collections.
for (int stack = 0; stack <= Stacks; stack++)
{
y = Height / 2 - stack * Height / Stacks;
for (int slice = 0; slice <= Slices; slice++)
{
x = Width / 2 - slice * Width / Slices;
Point3D point = new Point3D(x, y, 0);
vertices.Add(point);
normals.Add(point - new Point3D(x, y, 0));
textures.Add(new Point((double)slice / Slices,
(double)stack / Stacks));
}
}
// Fill the indices collection.
for (int stack = 0; stack < Stacks; stack++)
{
for (int slice = 0; slice < Slices; slice++)
{
indices.Add(indexBase + (stack + 0) * (Slices + 1) + slice);
indices.Add(indexBase + (stack + 1) * (Slices + 1) + slice);
indices.Add(indexBase + (stack + 0) * (Slices + 1) + slice + 1);
indices.Add(indexBase + (stack + 0) * (Slices + 1) + slice + 1);
indices.Add(indexBase + (stack + 1) * (Slices + 1) + slice);
indices.Add(indexBase + (stack + 1) * (Slices + 1) + slice + 1);
}
}
}
protected virtual void PropertyChanged(DependencyPropertyChangedEventArgs args)
{
Point3DCollection vertices;
Vector3DCollection normals;
Int32Collection indices;
PointCollection textures;
if (!IsWireFrame || args.Property == IsWireFrameProperty && !(bool)args.OldValue)
{
// Obtain the MeshGeometry3D.
MeshGeometry3D mesh = Geometry;
// Get all four collectiona.
vertices = mesh.Positions;
normals = mesh.Normals;
indices = mesh.TriangleIndices;
textures = mesh.TextureCoordinates;
// Set the MeshGeometry3D collections to null while updating.
mesh.Positions = null;
mesh.Normals = null;
mesh.TriangleIndices = null;
mesh.TextureCoordinates = null;
}
else
{
// Get properties from WireFrame object
vertices = wireframe.Positions;
normals = wireframe.Normals;
indices = wireframe.TriangleIndices;
textures = wireframe.TextureCoordinates;
wireframe.Positions = null;
wireframe.Normals = null;
wireframe.TriangleIndices = null;
wireframe.TextureCoordinates = null;
}
// If args.Property not IsWireFrame OR Algorithmic transforms
if (args.Property != AlgorithmicTransformsProperty &&
args.Property != IsWireFrameProperty)
{
// Call the abstract method to fill the collections.
Triangulate(args, vertices, normals, indices, textures);
// Transfer vertices and normals to internal collections.
verticesPreTransform.Clear();
normalsPreTransform.Clear();
foreach (Point3D vertex in vertices)
{
verticesPreTransform.Add(vertex);
}
foreach (Vector3D normal in normals)
{
normalsPreTransform.Add(normal);
}
}
if (args.Property == AlgorithmicTransformsProperty)
{
vertices.Clear();
normals.Clear();
normalsAsPoints.Clear();
// Transfer saved vertices and normals.
foreach (Point3D vertex in verticesPreTransform)
{
vertices.Add(vertex);
}
foreach (Vector3D normal in normalsPreTransform)
{
normalsAsPoints.Add((Point3D)normal);
}
}
if (args.Property != IsWireFrameProperty)
{
foreach (AlgorithmicTransform xform in AlgorithmicTransforms)
{
xform.Transform(vertices);
xform.Transform(normalsAsPoints);
}
foreach (Point3D point in normalsAsPoints)
{
normals.Add((Vector3D)point);
}
}
if (IsWireFrame)
{
// Set stuff to WireFrame object, and create it if necessary
if (wireframe == null)
{
wireframe = new WireFrame();
Children.Add(wireframe); // do we want to remove it when it's no longer used?
}
wireframe.TextureCoordinates = textures;
wireframe.TriangleIndices = indices;
wireframe.Normals = normals;
wireframe.Positions = vertices;
}
else
{
// Obtain the MeshGeometry3D.
MeshGeometry3D mesh = Geometry;
// Set the updated collections to the MeshGeometry3D.
mesh.TextureCoordinates = textures;
mesh.TriangleIndices = indices;
mesh.Normals = normals;
mesh.Positions = vertices;
}
}
// Calculates the Positions and Normals collections
// ------------------------------------------------
void GeneratePositions()
{
// Unhook Positions property and prepare for new points
MeshGeometry3D mesh = (MeshGeometry3D)Geometry;
Point3DCollection points = mesh.Positions;
mesh.Positions = null;
points.Clear();
// Unhook Normals property and prepare for new vectors
Vector3DCollection norms = mesh.Normals;
mesh.Normals = null;
norms.Clear();
// Copy properties to local variables to improve speed
Point3D point1 = Point1;
Point3D point2 = Point2;
double radius1 = Radius1;
double radius2 = Radius2;
int slices = Slices;
int stacks = Stacks;
// vectRearRadius always points towards -Z (when possible)
Vector3D vectCylinder = point2 - point1;
Vector3D vectRearRadius;
if (vectCylinder.X == 0 && vectCylinder.Y == 0)
{
// Special case: set rear-radius vector
vectRearRadius = new Vector3D(0, -1, 0);
}
else
{
// Find vector axis 90 degrees from cylinder where Z == 0
rotate.Axis = Vector3D.CrossProduct(vectCylinder, new Vector3D(0, 0, 1));
rotate.Angle = -90;
// Rotate cylinder 90 degrees to find radius vector
vectRearRadius = vectCylinder * xform.Value;
vectRearRadius.Normalize();
}
// Will rotate radius around cylinder axis
rotate.Axis = vectCylinder;
for (int i = 0; i <= slices; i++)
{
// Rotate rear-radius vector
rotate.Angle = i * 360 / slices;
Vector3D vectRadius = vectRearRadius * xform.Value;
for (int j = 0; j <= stacks; j++)
{
// Find points from top to bottom
Point3D pointCenter = point1 + j * (point2 - point1) / stacks;
double radius = radius1 + j * (radius2 - radius1) / stacks;
points.Add(pointCenter + radius * vectRadius);
norms.Add(vectRadius);
}
// Points on top and bottom
points.Add(point1 + radius1 * vectRadius);
points.Add(point2 + radius2 * vectRadius);
// But normals point towards ends
norms.Add(point1 - point2);
norms.Add(point2 - point1);
}
// Add multiple center points on top and bottom ends
for (int i = 0; i < slices; i++)
{
points.Add(point1); // top end
points.Add(point2); // bottom end
norms.Add(point1 - point2);
norms.Add(point2 - point1);
}
// Set Normals and Positions properties from re-calced vectors
mesh.Normals = norms;
mesh.Positions = points;
}
protected override void Triangulate(DependencyPropertyChangedEventArgs args,
Point3DCollection vertices,
Vector3DCollection normals,
Int32Collection indices,
PointCollection textures)
{
vertices.Clear();
normals.Clear();
indices.Clear();
textures.Clear();
// Copy properties to local variables to improve speed
int slices = Slices;
int stacks = Stacks;
double radius = Radius;
Point3D ctr = Center;
double lat1 = Math.Max(LatitudeFrom, LatitudeTo); // default is 90
double lat2 = Math.Min(LatitudeFrom, LatitudeTo); // default is -90
double lng1 = LongitudeFrom; // default is -180
double lng2 = LongitudeTo; // default is 180
for (int lat = 0; lat <= stacks; lat++)
{
double degrees = lat1 - lat * (lat1 - lat2) / stacks;
double angle = Math.PI * degrees / 180;
double y = radius * Math.Sin(angle);
double scale = Math.Cos(angle);
for (int lng = 0; lng <= slices; lng++)
{
double diff = lng2 - lng1;
if (diff < 0)
{
diff += 360;
}
degrees = lng1 + lng * diff / slices;
angle = Math.PI * degrees / 180;
double x = radius * scale * Math.Sin(angle);
double z = radius * scale * Math.Cos(angle);
Vector3D vect = new Vector3D(x, y, z);
vertices.Add(ctr + vect);
normals.Add(vect);
textures.Add(new Point((double)lng / slices,
(double)lat / stacks));
}
}
for (int lat = 0; lat < stacks; lat++)
{
int start = lat * (slices + 1);
int next = start + slices + 1;
for (int lng = 0; lng < slices; lng++)
{
indices.Add(start + lng);
indices.Add(next + lng);
indices.Add(next + lng + 1);
indices.Add(start + lng);
indices.Add(next + lng + 1);
indices.Add(start + lng + 1);
}
}
}
/// <summary>
///
/// </summary>
/// <param name="args"></param>
/// <param name="vertices"></param>
/// <param name="normals"></param>
/// <param name="indices"></param>
/// <param name="textures"></param>
protected override void Triangulate(DependencyPropertyChangedEventArgs args,
Point3DCollection vertices,
Vector3DCollection normals,
Int32Collection indices,
PointCollection textures)
{
// Clear all four collections.
vertices.Clear();
normals.Clear();
indices.Clear();
textures.Clear();
// Begin at the top end. Fill the collections.
for (int stack = 0; stack <= EndStacks; stack++)
{
double y = Length / 2;
double radius = stack * Radius / EndStacks;
int top = (stack + 0) * (Slices + 1);
int bot = (stack + 1) * (Slices + 1);
for (int slice = 0; slice <= Slices; slice++)
{
double theta = slice * 2 * Math.PI / Slices;
double x = -radius *Math.Sin(theta);
double z = -radius *Math.Cos(theta);
vertices.Add(new Point3D(x, y, z));
normals.Add(new Vector3D(0, 1, 0));
textures.Add(new Point((double)slice / Slices,
Fold * stack / EndStacks));
if (stack < EndStacks && slice < Slices)
{
if (stack != 0)
{
indices.Add(top + slice);
indices.Add(bot + slice);
indices.Add(top + slice + 1);
}
indices.Add(top + slice + 1);
indices.Add(bot + slice);
indices.Add(bot + slice + 1);
}
}
}
int offset = vertices.Count;
// Length of the cylinder: Fill in the collections.
for (int stack = 0; stack <= Stacks; stack++)
{
double y = Length - stack * Length / Stacks - Length / 2;
int top = offset + (stack + 0) * (Slices + 1);
int bot = offset + (stack + 1) * (Slices + 1);
for (int slice = 0; slice <= Slices; slice++)
{
double theta = slice * 2 * Math.PI / Slices;
double x = -Radius *Math.Sin(theta);
double z = -Radius *Math.Cos(theta);
vertices.Add(new Point3D(x, y, z));
normals.Add(new Vector3D(x, 0, z));
textures.Add(new Point((double)slice / Slices,
Fold + (1 - 2 * Fold) * stack / Stacks));
if (stack < Stacks && slice < Slices)
{
indices.Add(top + slice);
indices.Add(bot + slice);
indices.Add(top + slice + 1);
indices.Add(top + slice + 1);
indices.Add(bot + slice);
indices.Add(bot + slice + 1);
}
}
}
offset = vertices.Count;
// Finish with the bottom end. Fill the collections.
for (int stack = 0; stack <= EndStacks; stack++)
{
double y = -Length / 2;
double radius = (EndStacks - stack) * Radius / EndStacks;
int top = offset + (stack + 0) * (Slices + 1);
int bot = offset + (stack + 1) * (Slices + 1);
for (int slice = 0; slice <= Slices; slice++)
{
double theta = slice * 2 * Math.PI / Slices;
double x = -radius *Math.Sin(theta);
double z = -radius *Math.Cos(theta);
vertices.Add(new Point3D(x, y, z));
normals.Add(new Vector3D(0, -1, 0));
textures.Add(new Point((double)slice / Slices,
(1 - Fold) + Fold * stack / EndStacks));
if (stack < EndStacks && slice < Slices)
{
indices.Add(top + slice);
indices.Add(bot + slice);
indices.Add(top + slice + 1);
if (stack != EndStacks - 1)
{
indices.Add(top + slice + 1);
indices.Add(bot + slice);
indices.Add(bot + slice + 1);
}
}
}
}
}
protected override void Triangulate(DependencyPropertyChangedEventArgs args,
Point3DCollection vertices,
Vector3DCollection normals,
Int32Collection indices,
PointCollection textures)
{
vertices.Clear();
normals.Clear();
indices.Clear();
textures.Clear();
Point3D[,] faces = Faces;
PointCollection texturesBase = TextureCoordinates;
int indexTextures = 0;
for (int face = 0; face < faces.GetLength(0); face++)
{
Vector3D normal = Vector3D.CrossProduct(faces[face, 1] - faces[face, 0],
faces[face, 2] - faces[face, 0]);
// For faces that are triangles.
if (faces.GetLength(1) == 3)
{
int indexBase = vertices.Count;
for (int i = 0; i < 3; i++)
{
vertices.Add(faces[face, i]);
normals.Add(normal);
indices.Add(indexBase + i);
if (texturesBase != null && texturesBase.Count > 0)
{
textures.Add(texturesBase[indexTextures]);
indexTextures = (indexTextures + 1) % texturesBase.Count;
}
}
if (Slices > 1)
{
TriangleSubdivide(vertices, normals, indices, textures);
}
}
// For faces that are not triangles.
else
{
for (int i = 0; i < faces.GetLength(1) - 1; i++)
{
int indexBase = vertices.Count;
int num = faces.GetLength(1) - 1;
vertices.Add(faces[face, 0]);
vertices.Add(faces[face, i + 1]);
vertices.Add(faces[face, (i + 1) % num + 1]);
if (texturesBase != null && texturesBase.Count >= faces.GetLength(1))
{
textures.Add(texturesBase[indexTextures + 0]);
textures.Add(texturesBase[indexTextures + i + 1]);
textures.Add(texturesBase[indexTextures + (i + 1) % num + 1]);
}
normals.Add(normal);
normals.Add(normal);
normals.Add(normal);
indices.Add(indexBase + 0);
indices.Add(indexBase + 1);
indices.Add(indexBase + 2);
if (Slices > 1)
{
TriangleSubdivide(vertices, normals, indices, textures);
}
}
if (texturesBase != null && texturesBase.Count > 0)
{
indexTextures = (indexTextures + faces.GetLength(1)) % texturesBase.Count;
}
}
}
}
protected override void Triangulate(DependencyPropertyChangedEventArgs args,
Point3DCollection vertices,
Vector3DCollection normals,
Int32Collection indices,
PointCollection textures)
{
vertices.Clear();
normals.Clear();
indices.Clear();
textures.Clear();
// vectRearRadius points towards -Z (when possible).
Vector3D vectCylinder = Point2 - Point1;
Vector3D vectRearRadius;
if (vectCylinder.X == 0 && vectCylinder.Y == 0)
{
// Special case: set rear-radius vector
vectRearRadius = new Vector3D(0, -1, 0);
}
else
{
// Find vector axis 90 degrees from cylinder where Z == 0
rotate.Axis = Vector3D.CrossProduct(vectCylinder, new Vector3D(0, 0, 1));
rotate.Angle = -90;
// Rotate cylinder 90 degrees to find radius vector
vectRearRadius = vectCylinder * xform.Value;
vectRearRadius.Normalize();
}
// Will rotate radius around cylinder axis
rotate.Axis = -vectCylinder;
// Begin at the top end. Fill the collections.
for (int stack = 0; stack <= EndStacks; stack++)
{
double radius = stack * Radius1 / EndStacks;
Vector3D vectRadius = radius * vectRearRadius;
int top = (stack + 0) * (Slices + 1);
int bot = (stack + 1) * (Slices + 1);
for (int slice = 0; slice <= Slices; slice++)
{
rotate.Angle = slice * 360.0 / Slices;
vertices.Add(Point1 + vectRadius * xform.Value);
normals.Add(-vectCylinder);
textures.Add(new Point((double)slice / Slices,
Fold1 * stack / EndStacks));
if (stack < EndStacks && slice < Slices)
{
if (stack != 0)
{
indices.Add(top + slice);
indices.Add(bot + slice);
indices.Add(top + slice + 1);
}
indices.Add(top + slice + 1);
indices.Add(bot + slice);
indices.Add(bot + slice + 1);
}
}
}
int offset = vertices.Count;
// Go down length of cylinder and fill in the collections.
for (int stack = 0; stack <= Stacks; stack++)
{
double radius = ((Stacks - stack) * Radius1 + stack * Radius2) / Stacks;
Vector3D vectRadius = radius * vectRearRadius;
Point3D center = (Point3D)(Point1 + stack * vectCylinder / Stacks);
int top = offset + (stack + 0) * (Slices + 1);
int bot = offset + (stack + 1) * (Slices + 1);
for (int slice = 0; slice <= Slices; slice++)
{
rotate.Angle = slice * 360.0 / Slices;
Vector3D normal = vectRadius * xform.Value;
normals.Add(normal);
vertices.Add(center + normal);
textures.Add(new Point((double)slice / Slices,
Fold1 + (Fold2 - Fold1) * stack / Stacks));
if (stack < Stacks && slice < Slices)
{
indices.Add(top + slice);
indices.Add(bot + slice);
indices.Add(top + slice + 1);
indices.Add(top + slice + 1);
indices.Add(bot + slice);
indices.Add(bot + slice + 1);
}
}
}
offset = vertices.Count;
// Finish with bottom.
for (int stack = 0; stack <= EndStacks; stack++)
{
double radius = Radius2 * (1 - (double)stack / EndStacks);
Vector3D vectRadius = radius * vectRearRadius;
int top = offset + (stack + 0) * (Slices + 1);
int bot = offset + (stack + 1) * (Slices + 1);
for (int slice = 0; slice <= Slices; slice++)
{
rotate.Angle = slice * 360.0 / Slices;
vertices.Add(Point2 + vectRadius * xform.Value);
normals.Add(vectCylinder);
textures.Add(new Point((double)slice / Slices,
Fold2 + (1 - Fold2) * stack / EndStacks));
if (stack < EndStacks && slice < Slices)
{
indices.Add(top + slice);
indices.Add(bot + slice);
indices.Add(top + slice + 1);
if (stack != EndStacks - 1)
{
indices.Add(top + slice + 1);
indices.Add(bot + slice);
indices.Add(bot + slice + 1);
}
}
}
}
}
protected override void Triangulate(DependencyPropertyChangedEventArgs args,
Point3DCollection vertices,
Vector3DCollection normals,
Int32Collection indices,
PointCollection textures)
{
vertices.Clear();
normals.Clear();
indices.Clear();
textures.Clear();
// Front.
for (int iy = 0; iy <= Stacks; iy++)
{
double y = Origin.Y + Height - iy * Height / Stacks;
for (int ix = 0; ix <= Slices; ix++)
{
double x = Origin.X + ix * Width / Slices;
vertices.Add(new Point3D(x, y, Origin.Z + Depth));
}
}
// Back
for (int iy = 0; iy <= Stacks; iy++)
{
double y = Origin.Y + Height - iy * Height / Stacks;
for (int ix = 0; ix <= Slices; ix++)
{
double x = Origin.X + Width - ix * Width / Slices;
vertices.Add(new Point3D(x, y, Origin.Z));
}
}
// Left
for (int iy = 0; iy <= Stacks; iy++)
{
double y = Origin.Y + Height - iy * Height / Stacks;
for (int iz = 0; iz <= Slivers; iz++)
{
double z = Origin.Z + iz * Depth / Slivers;
vertices.Add(new Point3D(Origin.X, y, z));
}
}
// Right
for (int iy = 0; iy <= Stacks; iy++)
{
double y = Origin.Y + Height - iy * Height / Stacks;
for (int iz = 0; iz <= Slivers; iz++)
{
double z = Origin.Z + Depth - iz * Depth / Slivers;
vertices.Add(new Point3D(Origin.X + Width, y, z));
}
}
// Top
for (int iz = 0; iz <= Slivers; iz++)
{
double z = Origin.Z + iz * Depth / Slivers;
for (int ix = 0; ix <= Slices; ix++)
{
double x = Origin.X + ix * Width / Slices;
vertices.Add(new Point3D(x, Origin.Y + Height, z));
}
}
// Top
for (int iz = 0; iz <= Slivers; iz++)
{
double z = Origin.Z + Depth - iz * Depth / Slivers;
for (int ix = 0; ix <= Slices; ix++)
{
double x = Origin.X + ix * Width / Slices;
vertices.Add(new Point3D(x, Origin.Y, z));
}
}
for (int side = 0; side < 6; side++)
{
for (int iy = 0; iy <= Stacks; iy++)
{
double y = (double)iy / Stacks;
for (int ix = 0; ix <= Slices; ix++)
{
double x = (double)ix / Slices;
textures.Add(new Point(x, y));
}
}
}
// Front, back, left, right
for (int side = 0; side < 6; side++)
{
for (int iy = 0; iy < Stacks; iy++)
{
for (int ix = 0; ix < Slices; ix++)
{
indices.Add(side * (Slices + 1) * (Stacks + 1) + iy * (Slices + 1) + ix);
indices.Add(side * (Slices + 1) * (Stacks + 1) + (iy + 1) * (Slices + 1) + ix);
indices.Add(side * (Slices + 1) * (Stacks + 1) + iy * (Slices + 1) + ix + 1);
indices.Add(side * (Slices + 1) * (Stacks + 1) + iy * (Slices + 1) + ix + 1);
indices.Add(side * (Slices + 1) * (Stacks + 1) + (iy + 1) * (Slices + 1) + ix);
indices.Add(side * (Slices + 1) * (Stacks + 1) + (iy + 1) * (Slices + 1) + ix + 1);
}
}
}
}
/// <summary>
///
/// </summary>
/// <param name="args">
/// The DependencyPropertyChangedEventArgs object originally
/// passed to the PropertyChanged handler that initiated this
/// recalculation.
/// </param>
/// <param name="vertices">
/// The Point3DCollection corresponding to the Positions property
/// of the MeshGeometry3D.
/// </param>
/// <param name="normals">
/// The Vector3DCollection corresponding to the Normals property
/// of the MeshGeometry3D.
/// </param>
/// <param name="indices">
/// The Int32Collection corresponding to the TriangleIndices
/// property of the MeshGeometry3D.
/// </param>
/// <param name="textures">
/// The PointCollection corresponding to the TextureCoordinates
/// property of the MeshGeometry3D.
/// </param>
protected override void Triangulate(DependencyPropertyChangedEventArgs args,
Point3DCollection vertices,
Vector3DCollection normals,
Int32Collection indices,
PointCollection textures)
{
// Clear all four collections.
vertices.Clear();
normals.Clear();
indices.Clear();
textures.Clear();
// Loop for outside (side = 1) and inside (side = -1).
for (int side = 1; side >= -1; side -= 2)
{
int offset = vertices.Count;
// Begin at the top end. Fill the collections.
for (int stack = 0; stack <= EndStacks; stack++)
{
double y = Length;
double radius = Radius + side * stack * Thickness / 2 / EndStacks;
int top = offset + (stack + 0) * (Slices + 1);
int bot = offset + (stack + 1) * (Slices + 1);
for (int slice = 0; slice <= Slices; slice++)
{
double theta = slice * 2 * Math.PI / Slices;
double x = -radius *Math.Sin(theta);
double z = -radius *Math.Cos(theta);
vertices.Add(new Point3D(x, y, z));
normals.Add(new Vector3D(0, side, 0));
textures.Add(new Point((double)slice / Slices,
Fold * stack / EndStacks));
if (stack < EndStacks && slice < Slices)
{
indices.Add(top + slice);
indices.Add(bot + slice);
indices.Add(top + slice + 1);
indices.Add(top + slice + 1);
indices.Add(bot + slice);
indices.Add(bot + slice + 1);
}
}
}
offset = vertices.Count;
// Length of the tube: Fill in the collections.
for (int stack = 0; stack <= Stacks; stack++)
{
double y = Length - stack * Length / Stacks;
int top = offset + (stack + 0) * (Slices + 1);
int bot = offset + (stack + 1) * (Slices + 1);
for (int slice = 0; slice <= Slices; slice++)
{
double theta = slice * 2 * Math.PI / Slices;
double x = -(Radius + side * Thickness / 2) * Math.Sin(theta);
double z = -(Radius + side * Thickness / 2) * Math.Cos(theta);
vertices.Add(new Point3D(x, y, z));
normals.Add(new Vector3D(side * x, 0, side * z));
textures.Add(new Point((double)slice / Slices,
Fold + (1 - 2 * Fold) * stack / Stacks));
if (stack < Stacks && slice < Slices)
{
indices.Add(top + slice);
indices.Add(bot + slice);
indices.Add(top + slice + 1);
indices.Add(top + slice + 1);
indices.Add(bot + slice);
indices.Add(bot + slice + 1);
}
}
}
offset = vertices.Count;
// Finish with the bottom end. Fill the collections.
for (int stack = 0; stack <= EndStacks; stack++)
{
double y = 0;
double radius = Radius + side * Thickness / 2 * (1 - (double)stack / EndStacks);
int top = offset + (stack + 0) * (Slices + 1);
int bot = offset + (stack + 1) * (Slices + 1);
for (int slice = 0; slice <= Slices; slice++)
{
double theta = slice * 2 * Math.PI / Slices;
double x = -radius *Math.Sin(theta);
double z = -radius *Math.Cos(theta);
vertices.Add(new Point3D(x, y, z));
normals.Add(new Vector3D(0, -side, 0));
textures.Add(new Point((double)slice / Slices,
(1 - Fold) + Fold * stack / EndStacks));
if (stack < EndStacks && slice < Slices)
{
indices.Add(top + slice);
indices.Add(bot + slice);
indices.Add(top + slice + 1);
indices.Add(top + slice + 1);
indices.Add(bot + slice);
indices.Add(bot + slice + 1);
}
}
}
}
}
/// <summary>
///
/// </summary>
/// <param name="args"></param>
/// <param name="vertices"></param>
/// <param name="normals"></param>
/// <param name="indices"></param>
/// <param name="textures"></param>
protected override void Triangulate(DependencyPropertyChangedEventArgs args,
Point3DCollection vertices,
Vector3DCollection normals,
Int32Collection indices,
PointCollection textures)
{
vertices.Clear();
normals.Clear();
indices.Clear();
textures.Clear();
Vector3D normal = new Vector3D(0, 0, 1);
double angleInner = 2 * Math.PI / Sides;
double radius = Length / 2 / Math.Sin(angleInner / 2);
double angle = 3 * Math.PI / 2 + angleInner / 2;
double xMin = 0, xMax = 0, yMin = 0, yMax = 0;
for (int side = 0; side < Sides; side++)
{
double x = Math.Cos(angle);
double y = Math.Sin(angle);
xMin = Math.Min(xMin, x);
xMax = Math.Max(xMax, x);
yMin = Math.Min(yMin, y);
yMax = Math.Max(yMax, y);
angle += angleInner;
}
angle = 3 * Math.PI / 2 + angleInner / 2;
for (int side = 0; side < Sides; side++)
{
vertices.Add(new Point3D(0, 0, 0));
textures.Add(new Point(-xMin / (xMax - xMin), yMax / (yMax - yMin)));
normals.Add(normal);
double x = Math.Cos(angle);
double y = Math.Sin(angle);
vertices.Add(new Point3D(x, y, 0));
textures.Add(new Point((x - xMin) / (xMax - xMin),
(yMax - y) / (yMax - yMin)));
normals.Add(normal);
angle += angleInner;
x = Math.Cos(angle);
y = Math.Sin(angle);
vertices.Add(new Point3D(x, y, 0));
textures.Add(new Point((x - xMin) / (xMax - xMin),
(yMax - y) / (yMax - yMin)));
normals.Add(normal);
int index = vertices.Count - 3;
indices.Add(index);
indices.Add(index + 1);
indices.Add(index + 2);
if (Slices > 1)
{
TriangleSubdivide(vertices, normals, indices, textures);
}
}
}