/// <summary>
/// Draws all Gizmos that are sub-classes of GizmoGeometry.
/// </summary>
/// <param name="pass">The pass from an effect to draw the geometry with.</param>
private void DrawBaseGizmosGeometries(EffectPass pass)
{
var count = 0;
List <Matrix> matrices;
foreach (var drawInstance in DrawInstances)
{
var geometry = drawInstance.Key;
geometry.Bind();
foreach (var colorEntry in drawInstance.Value)
{
ColorParameter.SetValue(colorEntry.Key.ToVector3());
matrices = colorEntry.Value;
count = matrices.Count;
for (var index = 0; index < count; index++)
{
WorldViewProjectionParameter.SetValue(matrices[index]);
pass.Apply();
geometry.Draw();
}
}
}
}
public virtual void UpdateParameters()
{
if (DirtyFlags.Has(DirtyFlag.WorldViewProjection))
{
Matrix.Multiply(ref _world, ref _view, out Matrix worldView);
Matrix.Multiply(ref worldView, ref _projection, out Matrix worldViewProjection);
WorldViewProjection = worldViewProjection;
WorldViewProjectionParameter.SetValue(worldViewProjection);
DirtyFlags -= DirtyFlag.WorldViewProjection;
}
if (DirtyFlags.Has(DirtyFlag.MaterialColor))
{
Vector4 diffuseColor = new Vector4(
DiffuseColor.R / 255f,
DiffuseColor.G / 255f,
DiffuseColor.B / 255f,
(DiffuseColor.A / 255f) * Alpha
);
DiffuseColorParameter.SetValue(diffuseColor);
DirtyFlags -= DirtyFlag.MaterialColor;
}
if (DirtyFlags.Has(DirtyFlag.TechniqueIndex))
{
OnUpdateTechniqueIndex();
DirtyFlags -= DirtyFlag.TechniqueIndex;
}
}
/// <summary>
/// Draws all Gizmos that are poly-lines.
/// </summary>
/// <param name="pass">The pass from an effect to draw the geometry with.</param>
private void DrawPolyLines(EffectPass pass)
{
var count = 0;
List <Vector3[]> positions;
WorldViewProjectionParameter.SetValue(Matrix.Identity);
foreach (var polyLineInstance in PolyLinesToDraw)
{
ColorParameter.SetValue(polyLineInstance.Key.ToVector3());
positions = polyLineInstance.Value;
count = positions.Count;
for (var index = 0; index < count; index++)
{
pass.Apply();
PolyLine.Draw(positions[index]);
}
}
}