void render(byte[] buf, List <Sphere> spheres, int pixelWidth)
{
float tm = _timer.gameTime() * 2.0f;
int stride = (pixelWidth * 32) / 8;
int pixelHeight = buf.Length / stride;
int width = pixelWidth;
int height = pixelHeight;
float invWidth = 1.0f / (float)width;
float invHeight = 1.0f / (float)height;
float fov = 80.0f;
float aspectratio = width / (float)height;
float angle = (float)Math.Tan(M_PI * 0.5f * fov / 180.0f);
List <Task> tasks = new List <Task>();
for (int i = 0; i < lineTos.Length; i++)
{
Task task = new Task(obj => {
// Trace rays
lineToRender toRender = lineTos[(int)obj];
for (int y = toRender.from; y < toRender.to; ++y)
{
for (int x = 0; x < width; ++x)
{
float xx = (2.0f * (((float)x + 0.5f) * invWidth) - 1.0f) * angle * aspectratio;
float yy = (1.0f - 2.0f * (((float)y + 0.5f) * invHeight)) * angle;
Vec3f raydir = new Vec3f(xx, yy, -1.0f);
raydir.normalize();
Vec3f raydir2 = new Vec3f(Mat4f.RotationYMatrix(-tm) * raydir);
//Vec3f raydir2 = raydir;
//Vec3f rayorig = new Vec3f(0.0f, 1.0f + (float)Math.Sin(tm) * 4.0f, -20.0f) + new Vec3f(Mat4f.RotationYMatrix(-tm) * new Vec3f(0.0f, 1.0f, 20.0f));
Vec3f rayorig = new Vec3f(0.0f, 5.0f, -25.0f) + new Vec3f(Mat4f.RotationYMatrix(-tm) * new Vec3f(0.0f, 5.0f, 25.0f));
//Vec3f rayorig = spheres[1].center + new Vec3f(Mat4f.RotationYMatrix(-tm) * new Vec3f(0.0f, 3.0f, 5.0f + tm));
//Vec3f rayorig = new Vec3f(0.0f);
//Vec3f rayorig = new Vec3f(0.0f, 10.0f, 0.0f);
Vec3f pixel = trace(rayorig, raydir2, spheres, 0);
printPixel(buf, x, y, new pBGRA((byte)(pixel.z * 255.0f), (byte)(pixel.y * 255.0f), (byte)(pixel.x * 255.0f), 255), pixelWidth);
}
}
}, i);
task.Start();
tasks.Add(task);
}
foreach (Task t in tasks)
{
t.Wait();
}
}
void render(byte[] buf, List <Sphere> spheres, int pixelWidth)
{
float tm = _timer.gameTime() * 2.0f;
int stride = (pixelWidth * 32) / 8;
int pixelHeight = buf.Length / stride;
int width = pixelWidth;
int height = pixelHeight;
float invWidth = 1.0f / (float)width;
float invHeight = 1.0f / (float)height;
float fov = 40.0f;
float aspectratio = width / (float)height;
float angle = (float)Math.Tan(M_PI * 0.5f * fov / 180.0f);
Parallel.For(0, lineTos.Length, i => {
lineToRender toRender = lineTos[i];
for (int y = toRender.from; y < toRender.to; ++y)
{
for (int x = 0; x < width; ++x)
{
float xx = (2.0f * (((float)x + 0.5f) * invWidth) - 1.0f) * angle * aspectratio;
float yy = (1.0f - 2.0f * (((float)y + 0.5f) * invHeight)) * angle;
Vec3f raydir = new Vec3f(xx, yy, -1.0f);
raydir.normalize();
Vec3f raydir2 = new Vec3f(Mat4f.RotationYMatrix(-tm) * raydir);
Vec3f rayorig = new Vec3f(0.0f, 5.0f, -25.0f) + new Vec3f(Mat4f.RotationYMatrix(-tm) * new Vec3f(0.0f, 5.0f, 25.0f));
Vec3f pixel = trace(rayorig, raydir2, spheres, 0);
printPixel(buf, x, y, new pBGRA((byte)(pixel.z * 255.0f), (byte)(pixel.y * 255.0f), (byte)(pixel.x * 255.0f), 255), pixelWidth);
}
}
});
}
