/// <summary>
/// The virtual setMethod of the property <see cref="Position"/>
/// </summary>
protected virtual void setPosition(xyzwf value)
{
FPosition = value;
if ((Device == null) || (Device.Shader == null))
{
return;
}
int id = Device.Lights.IndexOf(this);
if ((Device == null) || (Device.Shader == null))
{
return;
}
Field F = Device.Shader.getvar("Lights[" + id.ToString() + "].position");
if (F != null)
{
F.Update();
}
else
{
if (id == 0)
{
F = Device.Shader.getvar("Light0Position");
if (F != null)
{
F.Update();
}
}
}
}
/// <summary>
/// sets the <see cref="xyzwf"/> value to the field. It works only when the shader is <see cref="OGLShader.Using"/> true is.
/// </summary>
/// <param name="value">is <see cref="xyzwf"/> value</param>
/// <returns>true when the shader is using and the field has a handle >=0.</returns>
public bool SetValue(xyzwf value)
{
if (!(Owner.Using) || (handle < 0))
{
return(false);
}
float[] C = new float[] { value.x, value.y, value.z, value.w };
float[] N = new float[2];
GL.Uniform4(handle, C[0], C[1], C[2], C[3]);
GL.GetUniform(Owner.Handle, handle, N);
return(true);
}