private void CreateInternalGearScene()
{
this.speed = 0.05f;
var radiusMax = InvoluteGearShape.RadiusMax(150, DiametralPitch, GearType.Internal);
var shape = new InvoluteGearShape(150, DiametralPitch, radiusMax + 1.0f, this.PressureAngle, GearType.Internal);
var gear = new Gear(shape, this.GetRandomNamedColor());
this.Gears.Add(gear);
var axleRadius = InvoluteGearShape.RadiusMin(5, DiametralPitch, GearType.External) - 0.035f;
var shape2 = new InvoluteGearShape(100, DiametralPitch, axleRadius, this.PressureAngle);
var gear2 = new Gear(shape2, this.GetRandomNamedColor());
this.Gears.Add(gear2);
gear.AddChild(gear2, 0.0f);
var shape3 = new InvoluteGearShape(38, DiametralPitch, axleRadius, this.PressureAngle);
var gear3 = new Gear(shape3, this.GetRandomNamedColor());
this.Gears.Add(gear3);
gear2.AddChild(gear3, MathHelper.Pi + 0.5f);
var shape4 = new InvoluteGearShape(5, DiametralPitch, axleRadius, this.PressureAngle);
var gear4 = new Gear(shape4, this.GetRandomNamedColor());
this.Gears.Add(gear4);
gear3.AddChild(gear4, 1.9f);
}
public Gear(InvoluteGearShape shape, Color color)
{
this.Shape = shape;
this.Children = new List <GearConnection>(0);
//this.Visualization = new LineVisualization(shape, color);
this.Visualization = new TriangleVisualization(shape, color);
}
public LineVisualization(InvoluteGearShape shape, Color color)
{
this.Vertices = new VertexPositionColor[shape.Outline.Count + CirclePoints];
this.Indices = new short[(shape.Outline.Count + CirclePoints) * 2];
this.CreateLineList(color, shape.Outline, 0, 0);
this.CreateLineList(color, CreateCircle(CirclePoints, shape.AxleRadius), shape.Outline.Count, shape.Outline.Count * 2);
}
public TriangleVisualization(InvoluteGearShape shape, Color color)
{
var vertices = new List <VertexPositionColor>();
var indices = new List <int>();
var outline = shape.Outline;
var ii = 0;
for (var i = 0; i < outline.Count; i++)
{
var current = new Vector3(outline[i].X, outline[i].Y, 0);
var next = new Vector3(outline[(i + 1) % outline.Count].X, outline[(i + 1) % outline.Count].Y, 0);
var altCurrent = Vector3.Normalize(new Vector3(current.X, current.Y, 0)) * shape.AxleRadius;
var altNext = Vector3.Normalize(new Vector3(next.X, next.Y, 0)) * shape.AxleRadius;
{
var a = new VertexPositionColor(current, color);
var b = new VertexPositionColor(altCurrent, color);
var c = new VertexPositionColor(altNext, color);
vertices.Add(a);
vertices.Add(b);
vertices.Add(c);
}
{
var a = new VertexPositionColor(current, color);
var b = new VertexPositionColor(altNext, color);
var c = new VertexPositionColor(next, color);
vertices.Add(a);
vertices.Add(b);
vertices.Add(c);
}
if (shape.GearType == GearType.Internal)
{
indices.Add(ii++);
indices.Add(ii++);
indices.Add(ii++);
indices.Add(ii++);
indices.Add(ii++);
indices.Add(ii++);
}
// To prevent counter clockwise faces from being culled we have to reverse the triangle order for external gears
else
{
indices.Add(ii + 5);
indices.Add(ii + 4);
indices.Add(ii + 3);
indices.Add(ii + 2);
indices.Add(ii + 1);
indices.Add(ii + 0);
ii += 6;
}
}
this.Vertices = vertices.ToArray();
this.Indices = indices.ToArray();
}
