static void Main(string[] args)
{
try
{
// Analyze arguments
if (args.Length != 1)
{
throw new Exception("Usage: BRDFSlices \"Path to MERL BRDF\"");
}
FileInfo SourceBRDF = new FileInfo(args[0]);
if (!SourceBRDF.Exists)
{
throw new Exception("Source BRDF file \"" + SourceBRDF.FullName + "\" does not exist!");
}
// Load the BRDF
Vector3[,,] BRDF = DisplayForm.LoadBRDF(SourceBRDF);
DisplayForm F = new DisplayForm(BRDF);
Application.Run(F);
}
catch (Exception _e)
{
MessageBox.Show("An error occurred!\r\n\r\n" + _e.Message + "\r\n\r\n" + _e.StackTrace, "BRDF Fitting", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
}
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
if (m_Slice != null)
{
e.Graphics.DrawImage(m_Slice, 0, 0, Width, Height);
}
if (ShowIsoLines)
{
PointF P0 = new PointF(), P1 = new PointF();
double ThetaHalf, PhiHalf, ThetaDiff, PhiDiff;
double ThetaHalfN, PhiHalfN, ThetaDiffN, PhiDiffN;
for (int IsolineIndex = 0; IsolineIndex < 20; IsolineIndex++)
{
double ThetaI = (1 + IsolineIndex) / 20.0 * 0.495 * Math.PI;
// double ThetaI = Math.Sqrt( (1+IsolineIndex) / 12.0 ) * 0.49 * Math.PI;
for (int i = 0; i < 20; i++)
{
ThetaI = (1.0 + IsolineIndex) / 20.0 * 0.495 * Math.PI;
double HalfPhi = 0.5 * i * Math.PI / 20;
DisplayForm.std_coords_to_half_diff_coords(ThetaI, HalfPhi, ThetaI, -HalfPhi, out ThetaHalf, out PhiHalf, out ThetaDiff, out PhiDiff);
//Convert( ThetaI, Phi, out ThetaHalf, out ThetaDiff );
// Change Phi_d
double TestThetaI, TestPhiI, TestThetaO, TestPhiO;
DisplayForm.half_diff_coords_to_std_coords(ThetaHalf, PhiHalf, ThetaDiff, PhiD, out TestThetaI, out TestPhiI, out TestThetaO, out TestPhiO);
DisplayForm.std_coords_to_half_diff_coords(TestThetaI, TestPhiI, TestThetaO, TestPhiO, out ThetaHalf, out PhiHalf, out ThetaDiff, out PhiDiff);
ThetaI = (1.2 + IsolineIndex) / 20.0 * 0.495 * Math.PI;
HalfPhi = 0.5 * (i + 1) * Math.PI / 20;
DisplayForm.std_coords_to_half_diff_coords(ThetaI, HalfPhi, ThetaI, -HalfPhi, out ThetaHalfN, out PhiHalfN, out ThetaDiffN, out PhiDiffN);
//Convert( ThetaI, Phi, out ThetaHalfN, out ThetaDiffN );
// Change Phi_d
DisplayForm.half_diff_coords_to_std_coords(ThetaHalfN, PhiHalfN, ThetaDiffN, PhiD, out TestThetaI, out TestPhiI, out TestThetaO, out TestPhiO);
DisplayForm.std_coords_to_half_diff_coords(TestThetaI, TestPhiI, TestThetaO, TestPhiO, out ThetaHalfN, out PhiHalfN, out ThetaDiffN, out PhiDiffN);
P0.X = (float)(Width * ThetaHalf * 0.63661977236758134307553505349006); // divided by PI/2
P0.Y = (float)(Height * (1.0f - ThetaDiff * 0.63661977236758134307553505349006)); // divided by PI/2
P1.X = (float)(Width * ThetaHalfN * 0.63661977236758134307553505349006); // divided by PI/2
P1.Y = (float)(Height * (1.0f - ThetaDiffN * 0.63661977236758134307553505349006)); // divided by PI/2
e.Graphics.DrawLine(m_Pen, P0, P1);
}
//Convert( ThetaI, 0.8 * Math.PI, out ThetaHalf, out ThetaDiff );
{
double ThetaDH = Math.Acos(Math.Sqrt(Math.Cos(ThetaI)));
double PhiI = 2.0 * Math.Atan(1.0 / Math.Cos(ThetaDH));
// DisplayForm.std_coords_to_half_diff_coords( ThetaI, 0, ThetaI, PhiI, out ThetaHalf, out PhiHalf, out ThetaDiff, out PhiDiff );
Convert(ThetaI, PhiI, out ThetaHalf, out ThetaDiff);
}
P0.X = (float)(Width * ThetaHalf * 0.63661977236758134307553505349006) - 16.0f; // divided by PI/2
P0.Y = (float)(Height * (1.0f - ThetaDiff * 0.63661977236758134307553505349006)) - 0 * 16.0f; // divided by PI/2
e.Graphics.DrawString("" + (int)(ThetaI * 180 / Math.PI) + "°", Font, Brushes.Black, P0);
}
}
if (ShowIsoLines)
{
PointF P0 = new PointF(), P1 = new PointF();
double ThetaHalf, PhiHalf, ThetaDiff, PhiDiff;
double ThetaHalfN, PhiHalfN, ThetaDiffN, PhiDiffN;
for (int IsolineIndex = 0; IsolineIndex < 19; IsolineIndex++)
{
double Phi = (1.0 + IsolineIndex) / 20.0 * Math.PI;
// double Phi = Math.Sqrt( (0.5+IsolineIndex) / 12.0 ) * Math.PI;
for (int i = 0; i < 40; i++)
{
double Angle = i * 0.50 * Math.PI / 40;
DisplayForm.std_coords_to_half_diff_coords(Angle, 0, Angle, Phi, out ThetaHalf, out PhiHalf, out ThetaDiff, out PhiDiff);
Convert(Angle, Phi, out ThetaHalf, out ThetaDiff);
Angle = (i + 1) * 0.50 * Math.PI / 40;
DisplayForm.std_coords_to_half_diff_coords(Angle, 0, Angle, Phi, out ThetaHalfN, out PhiHalfN, out ThetaDiffN, out PhiDiffN);
Convert(Angle, Phi, out ThetaHalfN, out ThetaDiffN);
P0.X = (float)(Width * ThetaHalf * 0.63661977236758134307553505349006); // divided by PI/2
P0.Y = (float)(Height * (1.0f - ThetaDiff * 0.63661977236758134307553505349006)); // divided by PI/2
P1.X = (float)(Width * ThetaHalfN * 0.63661977236758134307553505349006); // divided by PI/2
P1.Y = (float)(Height * (1.0f - ThetaDiffN * 0.63661977236758134307553505349006)); // divided by PI/2
e.Graphics.DrawLine(m_Pen, P0, P1);
}
DisplayForm.std_coords_to_half_diff_coords(0.5 * Math.PI, 0, 0.5 * Math.PI, Phi, out ThetaHalf, out PhiHalf, out ThetaDiff, out PhiDiff);
P0.X = (float)(Width * ThetaHalf * 0.63661977236758134307553505349006) - 30.0f; // divided by PI/2
P0.Y = (float)(Height * (1.0f - ThetaDiff * 0.63661977236758134307553505349006)) + 2.0f; // divided by PI/2
e.Graphics.DrawString("" + (int)(Phi * 180 / Math.PI) + "°", Font, Brushes.Black, P0);
}
}
}
static void Main( string[] args )
{
try
{
// Analyze arguments
if ( args.Length != 1 )
throw new Exception( "Usage: BRDFSlices \"Path to MERL BRDF\"" );
FileInfo SourceBRDF = new FileInfo( args[0] );
if ( !SourceBRDF.Exists )
throw new Exception( "Source BRDF file \"" + SourceBRDF.FullName + "\" does not exist!" );
// Load the BRDF
Vector3[,,] BRDF = DisplayForm.LoadBRDF( SourceBRDF );
DisplayForm F = new DisplayForm( BRDF );
Application.Run( F );
}
catch ( Exception _e )
{
MessageBox.Show( "An error occurred!\r\n\r\n" + _e.Message + "\r\n\r\n" + _e.StackTrace, "BRDF Fitting", MessageBoxButtons.OK, MessageBoxIcon.Warning );
}
}
