public void DrawCoordinateSystem2D(Matrix3 mat, DrawHelpers.ArrowParams ap = null)
{
if (ap == null)
{
ap = new DrawHelpers.ArrowParams(1f);
}
this.ShaderPush();
this.ImmBegin((DrawMode)3, 18u);
this.SetColor(Colors.Red);
this.DrawArrow(mat.Z.Xy, mat.Z.Xy + mat.X.Xy, ap);
this.SetColor(Colors.Green);
this.DrawArrow(mat.Z.Xy, mat.Z.Xy + mat.Y.Xy, ap);
this.ImmEnd();
this.ShaderPop();
}
public void DrawArrow(Vector2 start_point, Vector2 end_point, DrawHelpers.ArrowParams ap)
{
Vector2 vector = (end_point - start_point).Normalize();
Vector2 vector2 = Math.Perp(vector);
start_point += vector2 * ap.Offset;
end_point += vector2 * ap.Offset;
ap.BodyRadius *= ap.Scale;
ap.HeadRadius *= ap.Scale;
ap.HeadLen *= ap.Scale;
float num = ap.HeadRadius;
float num2 = ap.HeadRadius;
float num3 = ap.BodyRadius;
float num4 = ap.BodyRadius;
if ((ap.HalfMask & 1u) == 0u)
{
num2 = 0f;
num4 = 0f;
}
if ((ap.HalfMask & 2u) == 0u)
{
num = 0f;
num3 = 0f;
}
this.ShaderPush();
bool immActive = this.m_imm.ImmActive;
if (ap.BodyRadius == 0f && !immActive)
{
this.ImmBegin((DrawMode)1, 2u);
this.ImmVertex(start_point);
this.ImmVertex(end_point);
this.ImmEnd();
}
if (!immActive)
{
this.ImmBegin((DrawMode)3, 9u);
}
if (ap.BodyRadius != 0f)
{
Vector2 pos = start_point + num3 * vector2;
Vector2 pos2 = start_point - num4 * vector2;
Vector2 pos3 = end_point - vector * ap.HeadLen + num3 * vector2;
Vector2 pos4 = end_point - vector * ap.HeadLen - num4 * vector2;
this.ImmVertex(pos);
this.ImmVertex(pos2);
this.ImmVertex(pos3);
this.ImmVertex(pos2);
this.ImmVertex(pos4);
this.ImmVertex(pos3);
}
this.ImmVertex(end_point - vector * ap.HeadLen - num2 * vector2);
this.ImmVertex(end_point);
this.ImmVertex(end_point - vector * ap.HeadLen + num * vector2);
if (!immActive)
{
this.ImmEnd();
}
this.ShaderPop();
}