private ProceduralShape AddSkirt(ref VertexPositionColorTextureNormal[] vertices, ref List <int> topEdges, ProceduralShape spherePatch, bool insideOut)
{
ProceduralShapeBuilder builder = new ProceduralShapeBuilder();
float skirtSize = 10f;
float offset = 0;
for (int i = 0; i < topEdges.Count - 1; i++)
{
Vector3 point = vertices[topEdges[i]].Position;
Vector3 toCenter = Vector3.Normalize(-point);
Vector3 lowPoint = point + toCenter * skirtSize;
point += toCenter * offset;
lowPoint += toCenter * offset;
Vector3 point2 = vertices[topEdges[i + 1]].Position;
Vector3 toCenter2 = Vector3.Normalize(-point2);
Vector3 lowPoint2 = point2 + toCenter2 * skirtSize;
point2 += toCenter2 * offset;
lowPoint2 += toCenter2 * offset;
builder.AddFaceWithColor(vertices[topEdges[i]].Color, point, point2,
lowPoint2, lowPoint);
}
var skirt = builder.BakeShape();
if (insideOut)
{
skirt.InsideOut();
}
spherePatch = ProceduralShape.Combine(spherePatch, skirt);
return(spherePatch);
}
/// <summary>
/// Builds a composite shape composed of a cylinder and two spheres.
/// </summary>
/// <param name="start"></param>
/// <param name="end"></param>
/// <param name="width"></param>
/// <returns></returns>
public static ProceduralShape Capsule(Vector3 start, Vector3 end, float width)
{
ProceduralSphereTwo s = new ProceduralSphereTwo(20);
ProceduralSphereTwo e = new ProceduralSphereTwo(20);
s.Scale(width);
e.Scale(width);
Vector3 translation = Vector3.Zero - ((start + end) / 2);
//untranslated cylinder will have a centroid at zero, a bottom point at (0,-length/2,0) and a top point at (0,length/2,0).
// we want to find the transform that takes these points to our desired start + end.
Vector3 length = start - end;
float l = length.Length();
Vector3 oldBottom = new Vector3(0, -l / 2, 0);
Vector3 oldTop = new Vector3(0, l / 2, 0);
s.Translate(oldBottom);
e.Translate(oldTop);
Vector3 oldLength = oldBottom - oldTop;
Vector3 crossAxis = Vector3.Cross(Vector3.Normalize(oldLength), Vector3.Normalize(length));
ProceduralCylinder cylinder = new ProceduralCylinder(width, width, l, 20, 2);
var finalShape = ProceduralShape.Combine(cylinder, s, e);
if (crossAxis != Vector3.Zero)
{
float angleOfRotation = (float)MonoMathHelper.GetSignedAngleBetween2DVectors(oldLength, length);
Matrix rotation = Matrix.CreateFromAxisAngle(Vector3.Normalize(crossAxis), angleOfRotation);
finalShape.Transform(rotation);
}
finalShape.Translate(-translation);
return(finalShape);
}
public static ProceduralShape CapsuleCube()
{
var cube = new ProceduralCube();
var cyl1 = Capsule(new Vector3(-0.5f, 0.5f, 0.5f), new Vector3(0.5f, 0.5f, 0.5f), 0.01f);
var cyl2 = Capsule(new Vector3(-0.5f, 0.5f, -0.5f), new Vector3(0.5f, 0.5f, -0.5f), 0.01f);
var cyl3 = Capsule(new Vector3(-0.5f, 0.5f, 0.5f), new Vector3(-0.5f, 0.5f, -0.5f), 0.01f);
var cyl4 = Capsule(new Vector3(0.5f, 0.5f, 0.5f), new Vector3(0.5f, 0.5f, -0.5f), 0.01f);
var cyl5 = Capsule(new Vector3(-0.5f, -0.5f, 0.5f), new Vector3(0.5f, -0.5f, 0.5f), 0.01f);
var cyl6 = Capsule(new Vector3(-0.5f, -0.5f, -0.5f), new Vector3(0.5f, -0.5f, -0.5f), 0.01f);
var cyl7 = Capsule(new Vector3(-0.5f, -0.5f, 0.5f), new Vector3(-0.5f, -0.5f, -0.5f), 0.01f);
var cyl8 = Capsule(new Vector3(0.5f, -0.5f, 0.5f), new Vector3(0.5f, -0.5f, -0.5f), 0.01f);
var cyl9 = Capsule(new Vector3(-0.5f, -0.5f, 0.5f), new Vector3(-0.5f, 0.5f, 0.5f), 0.01f);
var cyl10 = Capsule(new Vector3(-0.5f, -0.5f, -0.5f), new Vector3(-0.5f, 0.5f, -0.5f), 0.01f);
var cyl11 = Capsule(new Vector3(0.5f, -0.5f, -0.5f), new Vector3(0.5f, 0.5f, -0.5f), 0.01f);
var cyl12 = Capsule(new Vector3(0.5f, -0.5f, 0.5f), new Vector3(0.5f, 0.5f, 0.5f), 0.01f);
var finalShape = ProceduralShape.Combine(cube, cyl1, cyl2, cyl3, cyl4, cyl5, cyl6, cyl7, cyl8, cyl9, cyl10, cyl11, cyl12);
return(finalShape);
}