private void Main_Load(object sender, EventArgs e)
{
cam = new Camera();
voxmap = new Voxelmap(2, 2, 2);
/*
* voxmap[0, 0, 0] = Color.Green;
* voxmap[0, 1, 0] = Color.Blue;
* voxmap[1, 0, 0] = Color.Red;
* voxmap[0, 0, 1] = Color.Red;
* voxmap.Save(@"C:\Users\Class2018\Desktop\vox.vox");
*/
OrthographicSizeBox.Value = (decimal)cam.OrthographicSize;
MIPCheckBox.Checked = cam.RenderMode == Camera.RenderModeEnum.MIP;
RenderFrame.Image = cam.Render(voxmap);
}
public Bitmap Render(Voxelmap map)
{
if (bitmapNeedsUpdate)
{
image = new Bitmap(Height, Width);
}
Vector3 rayStep = Forward * RayStep;
float rayMaxLength = 5;//quickly set so that I can test the render;
for (int bitmapX = 0; bitmapX < image.Width; bitmapX++)
{
for (int bitmapY = 0; bitmapY < image.Height; bitmapY++)
{
hitVoxels.Clear();
Vector3 rayPoint = (bitmapX / PixelsPerUnit - OrthographicSize / 2f) * Right + (bitmapY / PixelsPerUnit - OrthographicSize / 2f) * Up + Position;
while ((rayPoint - Position).Magnitude < rayMaxLength)
{
int x = (int)Math.Round(rayPoint.X);
int y = (int)Math.Round(rayPoint.Y);
int z = (int)Math.Round(rayPoint.Z);
if (map.ContainsPoint(x, y, z))
{
Vector3I voxPoint = new Vector3I(x, y, z);
if (!hitVoxels.Contains(voxPoint))
{
hitVoxels.Add(voxPoint);
}
}
rayPoint = rayPoint + rayStep;
}
switch (RenderMode)
{
case RenderModeEnum.MIP:
float intensity = 0;
for (int i = 0; i < hitVoxels.Count; i++)
{
Color voxCol = map[hitVoxels[i].X, hitVoxels[i].Y, hitVoxels[i].Z];
float voxInten = voxCol.GetBrightness();
if (voxInten > intensity)
{
intensity = voxInten;
}
}
int colorVal = (int)(255 * intensity);
image.SetPixel(bitmapX, bitmapY, Color.FromArgb(colorVal, colorVal, colorVal));
break;
case RenderModeEnum.Color:
Color col = Background;
for (int i = hitVoxels.Count - 1; i >= 0; i--)
{
Vector3I cords = hitVoxels[i];
Color voxCol = map[cords.X, cords.Y, cords.Z];
float alpha = voxCol.A / 255f;
col = Color.FromArgb(
(int)(col.R * (1 - alpha) + (int)(voxCol.R * alpha)),
(int)(col.G * (1 - alpha) + (int)(voxCol.G * alpha)),
(int)(col.B * (1 - alpha) + (int)(voxCol.B * alpha))
);
}
image.SetPixel(bitmapX, bitmapY, col);
break;
default:
break;
}
}
}
return(image);
}
