//-----------------------
void DrawWireframeTri(Engine engine, Matrix mat, Vector3 p0, Vector3 p1, Vector3 p2,
Bootstrap.Color c0, Bootstrap.Color c1, Bootstrap.Color c2)
{
p0 = mat.TransformCoord(p0);
p1 = mat.TransformCoord(p1);
p2 = mat.TransformCoord(p2);
engine.DrawLine(p0, p1, c0);
engine.DrawLine(p1, p2, c1);
engine.DrawLine(p2, p0, c2);
}
//-----------------------
// UI rendering.
public void Render()
{
Engine engine = Program.GameEngine;
float width = 0.5f * _maskCamera.Projection.Width;
float height = 0.5f * _maskCamera.Projection.Height;
Matrix world = new Matrix(_maskCamera.Rotation, _maskCamera.Position);
Bootstrap.Color red = new Bootstrap.Color(1.0f, 0.0f, 0.0f, 1.0f);
Bootstrap.Color green = new Bootstrap.Color(0.0f, 1.0f, 0.0f, 1.0f);
Bootstrap.Color blue = new Bootstrap.Color(0.0f, 0.0f, 1.0f, 1.0f);
Bootstrap.Color yellow = new Bootstrap.Color(1.0f, 1.0f, 0.0f, 1.0f);
Bootstrap.Color teal = new Bootstrap.Color(0.0f, 1.0f, 1.0f, 0.0f);
// bottom.
DrawWireframeTri(engine, world,
new Vector3(0.0f, 0.0f, 0.0f),
new Vector3(-width, -height, -1.0f),
new Vector3(width, height, -1.0f),
green, green, green);
// left.
DrawWireframeTri(engine, world,
new Vector3(0.0f, 0.0f, 0.0f),
new Vector3(-width, -height, -1.0f),
new Vector3(-width, height, -1.0f),
green, green, green);
// top.
DrawWireframeTri(engine, world,
new Vector3(0.0f, 0.0f, 0.0f),
new Vector3(width, height, -1.0f),
new Vector3(-width, height, -1.0f),
green, yellow, yellow);
// right.
DrawWireframeTri(engine, world,
new Vector3(0.0f, 0.0f, 0.0f),
new Vector3(width, height, -1.0f),
new Vector3(width, -height, -1.0f),
green, teal, teal);
}