public static Mesh CreateBox(FloatBox box, Float4 color)
{
//Get the 8 corners of this box
Span <Float3> points = stackalloc Float3[8];
box.GetPoints(points);
//Get all the vertices that this box is made of
//(unique vertices per face because of unique normals)
Vertex[] vertices = new Vertex[6 * 4];
//Top vertices
vertices[0] = new Vertex(points[0], color, Float3.Up, uv1: (0f, 0f));
vertices[1] = new Vertex(points[1], color, Float3.Up, uv1: (1f, 0f));
vertices[2] = new Vertex(points[2], color, Float3.Up, uv1: (0f, 1f));
vertices[3] = new Vertex(points[3], color, Float3.Up, uv1: (1f, 1f));
//Bottom vertices
vertices[4] = new Vertex(points[4], color, Float3.Down, uv1: (0f, 0f));
vertices[5] = new Vertex(points[5], color, Float3.Down, uv1: (1f, 0f));
vertices[6] = new Vertex(points[6], color, Float3.Down, uv1: (0f, 1f));
vertices[7] = new Vertex(points[7], color, Float3.Down, uv1: (1f, 1f));
//Right vertices
vertices[8] = new Vertex(points[3], color, Float3.Right, uv1: (0f, 0f));
vertices[9] = new Vertex(points[2], color, Float3.Right, uv1: (1f, 0f));
vertices[10] = new Vertex(points[6], color, Float3.Right, uv1: (0f, 1f));
vertices[11] = new Vertex(points[5], color, Float3.Right, uv1: (1f, 1f));
//Left vertices
vertices[12] = new Vertex(points[7], color, Float3.Left, uv1: (0f, 0f));
vertices[13] = new Vertex(points[1], color, Float3.Left, uv1: (1f, 0f));
vertices[14] = new Vertex(points[0], color, Float3.Left, uv1: (0f, 1f));
vertices[15] = new Vertex(points[4], color, Float3.Left, uv1: (1f, 1f));
//Front vertices
vertices[16] = new Vertex(points[2], color, Float3.Forward, uv1: (0f, 0f));
vertices[17] = new Vertex(points[1], color, Float3.Forward, uv1: (1f, 0f));
vertices[18] = new Vertex(points[7], color, Float3.Forward, uv1: (0f, 1f));
vertices[19] = new Vertex(points[6], color, Float3.Forward, uv1: (1f, 1f));
//Back vertices
vertices[20] = new Vertex(points[4], color, Float3.Backward, uv1: (0f, 0f));
vertices[21] = new Vertex(points[0], color, Float3.Backward, uv1: (1f, 0f));
vertices[22] = new Vertex(points[3], color, Float3.Backward, uv1: (0f, 1f));
vertices[23] = new Vertex(points[5], color, Float3.Backward, uv1: (1f, 1f));
//Calculate indices using a strip approach
UInt16[] indices = new UInt16[]
{
0, 1, 3, 2, Mesh.RESTART_INDEX, //Top
4, 5, 7, 6, Mesh.RESTART_INDEX, //Bottom
8, 9, 11, 10, Mesh.RESTART_INDEX, //Right
12, 13, 15, 14, Mesh.RESTART_INDEX, //Left
16, 17, 19, 18, Mesh.RESTART_INDEX, //Front
20, 21, 23, 22, Mesh.RESTART_INDEX //Back
};
return(new Mesh(vertices, indices, Mesh.TopologyType.TriangleStrip));
}
private void FtoI(FloatBox fval, NumericUpDown ival)
{
float c = fval.Value;
if (c < 0)
{
c = 0;
}
else if (c > 1)
{
c = 1;
}
ival.Value = (int)(c * 255);
}
private void ItoF(NumericUpDown ival, FloatBox fval)
{
fval.Value = (float)ival.Value / 255;
}