/// <summary>
/// Create the corresponding <see cref="LightsState.Light"/> for this object.
/// </summary>
/// <returns>
/// It returns the <see cref="LightsState.Light"/> equivalent to this SceneObjectLight.
/// </returns>
public override LightsState.Light ToLight(GraphicsContext ctx, SceneGraphContext sceneCtx)
{
TransformStateBase transformState = (TransformStateBase)sceneCtx.GraphicsStateStack.Current[TransformStateBase.StateSetIndex];
LightsState.LightSpot light = new LightsState.LightSpot();
SetLightParameters(sceneCtx, light);
IModelMatrix worldModel = transformState.LocalModelView;
IMatrix3x3 normalMatrix = worldModel.GetComplementMatrix(3, 3).GetInverseMatrix().Transpose();
light.Direction = ((Vertex3f)normalMatrix.Multiply((Vertex3f)Direction)).Normalized;
light.Position = (Vertex3f)worldModel.Multiply(Vertex3f.Zero);
light.AttenuationFactors = AttenuationFactors;
light.FallOff = new Vertex2f((float)Math.Cos(Angle.ToRadians(FalloffAngle)), FalloffExponent);
// Shadow mapping
if (_ShadowMap != null && _ShadowViewMatrix != null)
{
// Determined later: light.ShadowMapIndex
light.ShadowMapMvp.Set(_ShadowViewMatrix);
light.ShadowMap2D = _ShadowMap;
}
else
{
light.ShadowMapIndex = -1;
light.ShadowMap2D = null;
}
return(light);
}
/// <summary>
/// Create the corresponding <see cref="LightsState.Light"/> for this object.
/// </summary>
/// <returns>
/// It returns the <see cref="LightsState.Light"/> equivalent to this SceneObjectLight.
/// </returns>
public override LightsState.Light ToLight(GraphicsContext ctx, SceneGraphContext sceneCtx)
{
LightsState.LightDirectional light = new LightsState.LightDirectional();
SetLightParameters(sceneCtx, light);
TransformStateBase transformState = (TransformStateBase)sceneCtx.GraphicsStateStack.Current[TransformStateBase.StateSetIndex];
IMatrix3x3 normalMatrix = transformState.NormalMatrix;
light.Direction = ((Vertex3f)normalMatrix.Multiply((Vertex3f)Direction)).Normalized;
light.HalfVector = (Vertex3f.UnitZ + light.Direction).Normalized;
return(light);
}
/// <summary>
/// Create the corresponding <see cref="LightsState.Light"/> for this object.
/// </summary>
/// <returns>
/// It returns the <see cref="LightsState.Light"/> equivalent to this SceneObjectLight.
/// </returns>
public override LightsState.Light ToLight(SceneGraphContext sceneCtx)
{
LightsState.LightDirectional light = new LightsState.LightDirectional();
SetLightParameters(sceneCtx, light);
// Note: avoiding to invert the view matrix twice
IMatrix3x3 normalMatrix = sceneCtx.CurrentView.LocalModel.GetComplementMatrix(3, 3).Transpose();
light.Direction = ((Vertex3f)normalMatrix.Multiply((Vertex3f)Direction)).Normalized;
light.HalfVector = (Vertex3f.UnitZ + light.Direction).Normalized;
return(light);
}
static void Main(string[] args)
{
Console.WriteLine("I want to find a solution of system of:\n 1) TWO linear equations \n 2) THREE linear equations");
int userChoice = Convert.ToInt32(Console.ReadLine());
if (userChoice == 1)
{
double x1;
double x2;
Equation eq = new Equation();
IMatrix2x2 eq2 = (IMatrix2x2)eq;
eq2.SetValues(ref eq);
eq2.Solution(out x1, out x2);
Console.WriteLine();
eq2.EquationOutput();
Console.WriteLine();
Console.WriteLine($"x = {x1}, y = {x2}");
}
else if (userChoice == 2)
{
double x1;
double x2;
double x3;
Equation eq = new Equation();
IMatrix3x3 eq3 = (IMatrix3x3)eq;
eq3.SetValues(ref eq);
eq3.Solution(out x1, out x2, out x3);
Console.WriteLine();
eq3.EquationOutput();
Console.WriteLine($"x = {x1}, y = {x2}, z = {x3}");
}
else
{
Console.WriteLine("Try again!");
}
}
/// <summary>
/// Set uniform state variable (variant type).
/// </summary>
/// <param name="ctx">
/// A <see cref="GraphicsContext"/> used for operations.
/// </param>
/// <param name="uniformName">
/// A <see cref="String"/> that specify the variable name in the shader source.
/// </param>
/// <param name="m">
/// A <see cref="IMatrix3x3"/> holding the uniform variabile data.
/// </param>
public void SetVariantUniform(GraphicsContext ctx, string uniformName, IMatrix3x3 m)
{
if (ctx == null)
{
throw new ArgumentNullException("ctx");
}
UniformBinding uniform = GetUniform(uniformName);
switch (uniform.UniformType)
{
case ShaderUniformType.Mat3x3:
SetUniform(ctx, uniformName, (Matrix3x3)m);
break;
case ShaderUniformType.DoubleMat3x3:
SetUniform(ctx, uniformName, (MatrixDouble3x3)m);
break;
default:
throw new ShaderException("unable to set double-precision floating-point matrix 3x3 data to uniform of type {0}", uniform.UniformType);
}
}
/// <summary>
/// Set uniform state variable (variant type).
/// </summary>
/// <param name="ctx">
/// A <see cref="GraphicsContext"/> used for operations.
/// </param>
/// <param name="uniformName">
/// A <see cref="String"/> that specify the variable name in the shader source.
/// </param>
/// <param name="m">
/// A <see cref="IMatrix3x3"/> holding the uniform variabile data.
/// </param>
public void SetVariantUniform(GraphicsContext ctx, string uniformName, IMatrix3x3 m)
{
if (ctx == null)
throw new ArgumentNullException("ctx");
UniformBinding uniform = GetUniform(uniformName);
switch (uniform.UniformType) {
case ShaderUniformType.Mat3x3:
SetUniform(ctx, uniformName, (Matrix3x3)m);
break;
case ShaderUniformType.DoubleMat3x3:
SetUniform(ctx, uniformName, (MatrixDouble3x3)m);
break;
default:
throw new ShaderException("unable to set double-precision floating-point matrix 3x3 data to uniform of type {0}", uniform.UniformType);
}
}
