internal void TestBoxGeneration()
{
int count = WireframeBoxVertexGenerator.VertexCount;
VertexPositionColor[] vertices = new VertexPositionColor[count + 1];
WireframeBoxVertexGenerator.Generate(
vertices, 1,
new Vector3(10.0f, 20.0f, 30.0f), new Vector3(20.0f, 25.0f, 32.5f),
Color.Blue
);
Assert.AreEqual(Vector3.Zero, vertices[0].Position);
Assert.AreNotEqual(Vector3.Zero, vertices[1].Position);
Assert.AreNotEqual(Vector3.Zero, vertices[count - 1].Position);
}
/// <summary>Draws a wireframe box at the specified location</summary>
/// <param name="min">Contains the coordinates of the box lesser corner</param>
/// <param name="max">Contains the coordinates of the box greater corner</param>
/// <param name="color">Color of the wireframe to draw</param>
public void DrawBox(Vector3 min, Vector3 max, Color color)
{
const int VertexCount = WireframeBoxVertexGenerator.VertexCount;
// If we would collide with the triangles in the array or there simply
// isn't enough space left, set the overflow flag and silently skip drawing
int proposedStart = this.lineIndex - (VertexCount - 1);
if (proposedStart < this.triangleIndex)
{
this.overflowed = true;
return;
}
// Generate the vertices for box' wireframe
WireframeBoxVertexGenerator.Generate(
this.queuedVertices, proposedStart, min, max, color
);
this.lineIndex -= VertexCount;
}