/// <summary>
/// Event occurs when the pixel grid needs to be re-painted.
/// </summary>
private void pixelGrid_Paint(object sender, PaintEventArgs e)
{
// Initialize required objects
SyntheticCamera c = new SyntheticCamera(_e, _g, _p, 15, 150, 45.0, 1.0, pixelGrid.Grid.Width, pixelGrid.Grid.Height);
DrawingController drawer = new DrawingController(e.Graphics);
RayTracer ray = new RayTracer(c, 1);
int superWidth = pixelGrid.Grid.Width * ray.ResolutionMultiplier;
int superHeight = pixelGrid.Grid.Height * ray.ResolutionMultiplier;
// Buffer holds the super width and super height colors to eventually avg and render.
Color[,] buffer = new Color[superHeight, superWidth];
// Loop through each pixel and trace a ray through it to find an intersection with the object
Parallel.For(0, superHeight, (y) =>
{
Parallel.For(0, superWidth, (x) =>
{
PointLight pointLight = new PointLight(Color.FromScRgb(1, 1, 1, 1), new Point3D(1000, 1000, 1000));
DirectionalLight sun = new DirectionalLight(Color.FromScRgb(1, 1, 1, 1), new Vector3D(0, 0, -1));
buffer[y, x] = ray.RayTrace(_objects, x, y, pointLight, sun);
});
});
// Calculates the avg's of the super resolution buffer and displys to screen.
for (int i = 0; i < buffer.GetLength(0); i += ray.ResolutionMultiplier)
{
for (int j = 0; j < buffer.GetLength(1); j += ray.ResolutionMultiplier)
{
// Add all the rbg values for each super resolution block of points.
float r = 0, g = 0, b = 0;
for (int m = 0; m < ray.ResolutionMultiplier; ++m)
{
for (int n = 0; n < ray.ResolutionMultiplier; ++n)
{
r += buffer[i + m, j + n].ScR;
g += buffer[i + m, j + n].ScG;
b += buffer[i + m, j + n].ScB;
}
}
// Avg the block of points to 1 pixel
float avgR = (float)(r / Math.Pow(ray.ResolutionMultiplier, 2));
float avgG = (float)(g / Math.Pow(ray.ResolutionMultiplier, 2));
float avgB = (float)(b / Math.Pow(ray.ResolutionMultiplier, 2));
drawer.Color = Color.FromScRgb(1, avgR, avgG, avgB).ToDColor();
drawer.DrawPoint(new System.Drawing.Point(j / ray.ResolutionMultiplier, i / ray.ResolutionMultiplier));
}
}
}