public static void line3(int x0, int y0, int x1, int y1, Image2D image, ColorRGB color)
{
bool steep = false;
if (Math.Abs(x0 - x1) < Math.Abs(y0 - y1))
{
swap(ref x0, ref y0);
swap(ref x1, ref y1);
steep = true;
}
if (x0 > x1)
{
swap(ref x0, ref x1);
swap(ref y0, ref y1);
}
for (int x = x0; x <= x1; x++)
{
float t = (x - x0) / (float)(x1 - x0);
int y = Convert.ToInt32(y0 * (1 - t) + y1 * t);
if (steep)
{
image.setPixel(y, x, color);
}
else
{
image.setPixel(x, y, color);
}
}
}
public static void rawTriangleWithZBuffer(Polygon polygon, Image2D image2D, ColorRGB colorRgb, ZBuffer zBuffer)
{
int xMin = Math.Min(Math.Min(polygon[0].X, polygon[1].X), polygon[2].X) < 0
? 0
: Math.Min(Math.Min(polygon[0].X, polygon[1].X), polygon[2].X);
int xMax = Math.Max(Math.Max(polygon[0].X, polygon[1].X), polygon[2].X) > image2D.Width
? image2D.Width
: Math.Max(Math.Max(polygon[0].X, polygon[1].X), polygon[2].X);
int yMin = Math.Min(Math.Min(polygon[0].Y, polygon[1].Y), polygon[2].Y) < 0
? 0
: Math.Min(Math.Min(polygon[0].Y, polygon[1].Y), polygon[2].Y);
int yMax = Math.Max(Math.Max(polygon[0].Y, polygon[1].Y), polygon[2].Y) > image2D.Height
? image2D.Height
: Math.Max(Math.Max(polygon[0].Y, polygon[1].Y), polygon[2].Y);
BarycentricPoint barycentricPoint = new BarycentricPoint(polygon);
for (int x = xMin; x < xMax; x++)
{
for (int y = yMin; y < yMax; y++)
{
barycentricPoint.calculateLambds(new Point3D(x, y));
if (barycentricPoint.Lambda0 >= 0 && barycentricPoint.Lambda1 >= 0 && barycentricPoint.Lambda2 >= 0)
{
double z = barycentricPoint.Lambda0 * polygon[0].Z +
barycentricPoint.Lambda1 * polygon[1].Z +
barycentricPoint.Lambda2 * polygon[2].Z;
if (z < zBuffer.getZBuffer(x, y))
{
zBuffer.setZBuffer(x, y, z);
image2D.setPixel(x, y, colorRgb);
}
}
}
}
}
private void button2_Click(object sender, EventArgs e)
{
int height = Convert.ToInt32(textBox1.Text);
int widht = Convert.ToInt32(textBox2.Text);
Image2D whiteImage = new Image2D(widht, height);
int[,] white = new int[widht, 255];
for (int i = 0; i < widht; i++)
{
for (int j = 0; j < height; j++)
{
white[i, j] = 255;
}
}
for (int i = 0; i < widht; i++)
{
for (int j = 0; j < height; j++)
{
whiteImage.setPixel(i, j, new ColorRGB(white[i, j], white[i, j], white[i, j]));
}
}
Bitmap resultBlackImage = ImageProcessor.Image2DtoBitmap(whiteImage);
pictureBox1.Image = resultBlackImage;
}
public static void line2(int x0, int y0, int x1, int y1, Image2D image, ColorRGB color)
{
for (int x = x0; x <= x1; x++)
{
float t = (x - x0) / (float)(x1 - x0);
int y = Convert.ToInt32(y0 * (1 - t) + y1 * t);
image.setPixel(x, y, color);
}
}
public static void line1(int x0, int y0, int x1, int y1, Image2D image, ColorRGB color)
{
for (float t = 0.0F; t < 1.0F; t += 0.01F)
{
int x = Convert.ToInt32(x0 * (1 - t) + x1 * t);
int y = Convert.ToInt32(y0 * (1 - t) + y1 * t);
image.setPixel(x, y, color);
}
}
public static void line4(int x0, int y0, int x1, int y1, Image2D image, ColorRGB color)
{
bool steep = false;
if (Math.Abs(x0 - x1) < Math.Abs(y0 - y1))
{
swap(ref x0, ref y0);
swap(ref x1, ref y1);
steep = true;
}
if (x0 > x1)
{
swap(ref x0, ref x1);
swap(ref y0, ref y1);
}
int dx = x1 - x0;
int dy = y1 - y0;
float derror = Math.Abs(dy / (float)dx);
float error = 0;
int y = y0;
for (int x = x0; x <= x1; x++)
{
if (steep)
{
image.setPixel(y, x, color);
}
else
{
image.setPixel(x, y, color);
}
error += derror;
if (error > 0.5)
{
y += (y1 > y0 ? 1 : -1);
error -= 1.0F;
}
}
}
private void rawPoints(object sender, EventArgs e)
{
Image2D pointsImage = new Image2D(1000, 1000);
foreach (Point3D temp in points)
{
pointsImage.setPixel(temp.X, temp.Y, new ColorRGB(255, 0, 0));
}
Bitmap image = ImageProcessor.Image2DtoBitmap(pointsImage);
pictureBox1.Image = image;
}
private void button3_Click(object sender, EventArgs e)
{
int height = Convert.ToInt32(textBox1.Text);
int widht = Convert.ToInt32(textBox2.Text);
Image2D redImage = new Image2D(widht, height);
for (int i = 0; i < widht; i++)
{
for (int j = 0; j < height; j++)
{
redImage.setPixel(i, j, new ColorRGB(255, 0, 0));
}
}
Bitmap resultBlackImage = ImageProcessor.Image2DtoBitmap(redImage);
pictureBox1.Image = resultBlackImage;
}
public static void rawTriangleWithGuruAndZBuffer(Polygon polygon, Image2D image2D, ZBuffer zBuffer)
{
int xMin = Math.Min(Math.Min(polygon[0].X, polygon[1].X), polygon[2].X) < 0
? 0
: Math.Min(Math.Min(polygon[0].X, polygon[1].X), polygon[2].X);
int xMax = Math.Max(Math.Max(polygon[0].X, polygon[1].X), polygon[2].X) > image2D.Width
? image2D.Width
: Math.Max(Math.Max(polygon[0].X, polygon[1].X), polygon[2].X);
int yMin = Math.Min(Math.Min(polygon[0].Y, polygon[1].Y), polygon[2].Y) < 0
? 0
: Math.Min(Math.Min(polygon[0].Y, polygon[1].Y), polygon[2].Y);
int yMax = Math.Max(Math.Max(polygon[0].Y, polygon[1].Y), polygon[2].Y) > image2D.Height
? image2D.Height
: Math.Max(Math.Max(polygon[0].Y, polygon[1].Y), polygon[2].Y);
BarycentricPoint barycentricPoint = new BarycentricPoint(polygon);
double l0 = MatrixUtil.cosDirectionEarthNormal(polygon.Norms[0]);
double l1 = MatrixUtil.cosDirectionEarthNormal(polygon.Norms[1]);
double l2 = MatrixUtil.cosDirectionEarthNormal(polygon.Norms[2]);
for (int x = xMin; x < xMax; x++)
{
for (int y = yMin; y < yMax; y++)
{
barycentricPoint.calculateLambds(new Point3D(x, y));
if (barycentricPoint.Lambda0 >= 0 && barycentricPoint.Lambda1 >= 0 && barycentricPoint.Lambda2 >= 0)
{
double z = barycentricPoint.Lambda0 * polygon[0].Z +
barycentricPoint.Lambda1 * polygon[1].Z +
barycentricPoint.Lambda2 * polygon[2].Z;
if (z < zBuffer.getZBuffer(x, y))
{
int brightness = (int)Math.Abs((255 * (barycentricPoint.Lambda0 * l0 +
barycentricPoint.Lambda1 * l1 +
barycentricPoint.Lambda2 * l2)));
zBuffer.setZBuffer(x, y, z);
image2D.setPixel(x, y, new ColorRGB(brightness, brightness, brightness));
}
}
}
}
}
