public Bitmap Scan(Bitmap baseImage, Rayable drawnObject, Vector3 pov, float lengthCutoff = 50)
{
Bitmap image = new Bitmap(baseImage);
for (int iy = 1; iy < resolution_Y; iy++)
{
for (int ix = 1; ix < resolution_X; ix++)
{
RayResult result = Ray(RayDirection(ix, iy), drawnObject, pov, 0.005f, lengthCutoff, 50);
//int color = (int)((1 - (result.Closest /0.05f)) * 255);
//int color = (int)((1 - (result.RayLength / 20)) * 255);
//int color = (int)(( (result.RayLength/lengthCutoff)) * 255);
int color = (int)((1 - (result.Steps / 50f)) * 255);
if (color > 255 || result.RayLength > lengthCutoff)
{
color = 0;
}
if (color < 0)
{
color = 0;
}
//if(color>100)
{
Color color1 = Color.FromArgb(color, color, color);
//image.SetPixel(resolution_X-ix, resolution_Y-iy, color1);
image.SetPixel(ix, resolution_Y - iy, color1);
//DrawPixel(baseImage, color1, ix, resolution_Y - iy);
}
}
}
return(image);
}
public float RayMarchScan(Vector3 Point, Rayable item)
{
Vector3 point = new Vector3(Point.x, Point.y, Point.z);
if (true)
{
//if (point.x < 4f && point.x > -5f)
{
//point.x = MathModulo(point.x+1f, 2f)-1f;
}
//if (point.y < 3f && point.y > -3f)
{
//point.y = MathModulo(point.y, 2f);
//point.y = Math.Abs(point.y);
}
if (point.y < 2)
{
//point.y = 2-point.y;
}
if (point.x + 5 < 0)
{
//point.x = -point.x-10;
}
point.z = 1.5f - Math.Abs(point.z - 1.5f);
point.x = 1.5f - Math.Abs(point.x - 1.5f);
point = Mirror(point - new Vector3(0, 0, 0), 1) + new Vector3(0, 0, 0);
point = Mirror(point - new Vector3(0, 0, 0), -1) + new Vector3(0, 0, 0);
//point.z = 3.5f - Math.Abs(point.z - 3.5f);
//point.x = 3.5f - Math.Abs(point.x - 3.5f);
//if (point.y > 2){ point.y -= 2f;point.x -= 1f;}
//point.y = Math.Abs(point.y);
//point.z = Math.Abs(10 - point.z);
//point.z = MathModulo(point.z, 1);
}
return(item.NearestPoint(point));
}
public RayResult Ray(Vector3 rayPoint, Rayable drawable, Vector3 pov, float precisionCutoff = 0.1f, float lengthCutoff = 20, int maxSteps = 20)
{
float rayLength = 0;
int steps = 0;
Vector3 rayPointNorm = rayPoint.Normalize;
Vector3 rayPointNow = pov * 1;
float closest = RayMarchScan(rayPointNow, drawable);
bool enough = false;
while (!enough)
{
steps++;
closest = RayMarchScan(rayPointNow, drawable);
rayLength += closest;
rayPointNow += rayPointNorm * closest;
//if (closestNow < closest)
//closest = closestNow;
if (
(closest < precisionCutoff)
|| (steps >= maxSteps)
)
{
//DrawPixel(rayDirection * 2, 1 - closeness * 7);
//steps = 0;
enough = true;
}
if (rayLength > lengthCutoff)
{
enough = true; //steps = maxSteps;
}
}
return(new RayResult(steps, closest, rayLength));
}
