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 button7_Click(object sender, EventArgs e)
{
TestObj testObj = new TestObj(false);
List <string> file = new List <string>();
using (StreamReader sr = new StreamReader(@"Test.obj", System.Text.Encoding.Default))
{
string str;
while ((str = sr.ReadLine()) != null)
{
file.Add(str);
}
}
Regex floatNumber = new Regex(@"(?:-)?0[.]\d*");
Regex intNumber = new Regex(@"\d+");
foreach (string temp in file)
{
if (temp[0] == 'v' && temp[1] == ' ')
{
MatchCollection matchCollection = floatNumber.Matches(temp);
double x = Convert.ToDouble(matchCollection[0].Value.Replace('.', ','));
double y = Convert.ToDouble(matchCollection[1].Value.Replace('.', ','));
double z = Convert.ToDouble(matchCollection[2].Value.Replace('.', ','));
Point3D point = new Point3D(x, y, z, 4000, 500);
testObj.points.Add(point);
}
}
foreach (string temp in file)
{
if (temp[0] == 'f')
{
MatchCollection matchCollection = intNumber.Matches(temp);
int p1 = Convert.ToInt32(matchCollection[0].Value);
int p2 = Convert.ToInt32(matchCollection[3].Value);
int p3 = Convert.ToInt32(matchCollection[6].Value);
Polygon polygon = new Polygon();
polygon[0] = testObj.points[p1 - 1];
polygon[1] = testObj.points[p2 - 1];
polygon[2] = testObj.points[p3 - 1];
testObj.polygons.Add(polygon);
// далее пойдет просто проверка на расчет бприцентрических координат точки относительно вершин треуголника
// здесь это удобнее так как тут идет создание всех полигонов модели
BarycentricPoint barycentricPoint = new BarycentricPoint(polygon);
barycentricPoint.calculateLambds(polygon[0]);
if (Math.Abs(1 - barycentricPoint.Lambda0 - barycentricPoint.Lambda1 -
barycentricPoint.Lambda2) > 0.001)
{
MessageBox.Show("Сумма барицентрических координат не равна 1!!!", "Ошибка",
MessageBoxButtons.OK);
}
}
}
testObj.Show();
}
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));
}
}
}
}
}