public static void createTriangleWithZBufferForTransformation(clsPolygonModified polygon, cls2D_Picture image, clsZbuffer zBuffer, int i)
{
minimalX = funcMinimumX(polygon);
maximalX = funcMaximumX(polygon, image);
minimalY = funcMinimumY(polygon);
maximalY = funcMaximumY(polygon, image);
clsBarycentricCoordinates barycentricPoint = new clsBarycentricCoordinates(polygon);
for (int x = minimalX; x <= maximalX; x++)
{
for (int y = minimalY; y <= maximalY; y++)
{
barycentricPoint.calc_lambda_for_Transformation(x, y);
if (barycentricPoint.lambda0 > 0 && barycentricPoint.lambda1 > 0 && barycentricPoint.lambda2 > 0)
{
double z = barycentricPoint.lambda0 * polygon[0].originalZ + barycentricPoint.lambda1 * polygon[1].originalZ + barycentricPoint.lambda2 * polygon[2].originalZ;
if (z < zBuffer.getZBuffer(x, y))
{
zBuffer.setZBuffer(x, y, z);
image.setPixel(x, y, new clsRGB((int)Math.Abs(clsVectorsOperations.getCosNormal(clsLoadData.polygonsForTransformation[i]) * 255), 0, 0));
}
}
}
}
}
public static List <clsPolygonModified> loadPolygonsFromObjectFileWithCheckForTransformation()
{
pointsForTransformation = loadTopsFromObjectFileForTransformation(); // считываем информацию
for (int i = 0; i < lines.Length; i++)
{
words = lines[i].Split(' ');
if (words[0] == "f")
{
words = lines[i].Split(' ', '/'); // считываем координаты полигонов
polygon1 = int.Parse(words[1]);
polygon2 = int.Parse(words[4]);
polygon3 = int.Parse(words[7]);
clsPolygonModified polygon = new clsPolygonModified(); // записываем полигон
polygon[0] = pointsForTransformation[polygon1 - 1];
polygon[1] = pointsForTransformation[polygon2 - 1];
polygon[2] = pointsForTransformation[polygon3 - 1];
clsBarycentricCoordinates barycentricCoordinates = new clsBarycentricCoordinates(polygon);
barycentricCoordinates.calc_lambda_for_Original(polygon[0]);
if (Math.Abs(1 - barycentricCoordinates.Lambda0 - barycentricCoordinates.Lambda1 -
barycentricCoordinates.Lambda2) > 0.001)
{
MessageBox.Show("Сумма барицентрических координат не равна 1!", "Ошибка",
MessageBoxButtons.OK);
}
polygonsForTransformation.Add(polygon); // сохраняем в лист
}
}
return(polygonsForTransformation);
}
public static int funcMaximumY(clsPolygonModified poligon, cls2D_Picture Picture)
{
maximalY = (int)Math.Max(Math.Max(poligon[0].projectiveY, poligon[1].projectiveY), poligon[2].projectiveY);
if (maximalY > Picture.height)
{
maximalY = Picture.height;
}
return(maximalY);
}
public static int funcMaximumX(clsPolygonModified poligon, cls2D_Picture Picture)
{
maximalX = (int)Math.Max(Math.Max(poligon[0].projectiveX, poligon[1].projectiveX), poligon[2].projectiveX);
if (maximalX > Picture.width)
{
maximalX = Picture.width;
}
return(maximalX);
}
public static int funcMinimumY(clsPolygonModified poligon)
{
minimalY = (int)Math.Min(Math.Min(poligon[0].projectiveY, poligon[1].projectiveY), poligon[2].projectiveY);
if (minimalY < 0)
{
minimalY = 0;
}
return(minimalY);
}
public static int funcMinimumX(clsPolygonModified poligon)
{
minimalX = (int)Math.Min(Math.Min(poligon[0].projectiveX, poligon[1].projectiveX), poligon[2].projectiveX);
if (minimalX < 0)
{
minimalX = 0;
}
return(minimalX);
}
public static double getCosNormal(clsPolygonModified polygon)
{
clsVector normaliseVector = getNormal(polygon);
// скалярное произведение
double scalarMulty = normaliseVector.X * vectorLight.X + normaliseVector.Y * vectorLight.Y + normaliseVector.Z * vectorLight.Z;
// норма вектора
double normalVectorLength = Math.Sqrt(normaliseVector.X * normaliseVector.X + normaliseVector.Y * normaliseVector.Y + normaliseVector.Z * normaliseVector.Z);
return(scalarMulty / normalVectorLength);
}
public static clsVector getNormal(clsPolygonModified polygon)
{
double x0 = polygon[0].movementX;
double y0 = polygon[0].movementY;
double z0 = polygon[0].movementZ;
double x1 = polygon[1].movementX;
double y1 = polygon[1].movementY;
double z1 = polygon[1].movementZ;
double x2 = polygon[2].movementX;
double y2 = polygon[2].movementY;
double z2 = polygon[2].movementZ;
// нахождение координат нормали через определитель
double x = (y1 - y0) * (z1 - z2) - (z1 - z0) * (y1 - y2);
double y = (x1 - x2) * (z1 - z0) - (z1 - z2) * (x1 - x0);
double z = (x1 - x0) * (y1 - y2) - (y1 - y0) * (x1 - x2);
return(new clsVector(x, y, z));
}
public clsBarycentricCoordinates(clsPolygonModified polyg)
{
polygonModified = polyg;
}
public static void createTriangleWithZBufferForTransformationWithModifiedLight(clsPolygonModified polygon, clsNormsPolygon normsPolygon, cls2D_Picture image, clsZbuffer zBuffer, int i)
{
minimalX = funcMinimumX(polygon);
maximalX = funcMaximumX(polygon, image);
minimalY = funcMinimumY(polygon);
maximalY = funcMaximumY(polygon, image);
clsBarycentricCoordinates barycentricPoint = new clsBarycentricCoordinates(polygon);
double l0 = clsVectorsOperations.scalarMulty(normsPolygon[0]) / (clsVectorsOperations.lengthNorm(normsPolygon[0]) * clsVectorsOperations.lengthVectorLight());
double l1 = clsVectorsOperations.scalarMulty(normsPolygon[1]) / (clsVectorsOperations.lengthNorm(normsPolygon[1]) * clsVectorsOperations.lengthVectorLight());
double l2 = clsVectorsOperations.scalarMulty(normsPolygon[2]) / (clsVectorsOperations.lengthNorm(normsPolygon[2]) * clsVectorsOperations.lengthVectorLight());
for (int x = minimalX; x <= maximalX; x++)
{
for (int y = minimalY; y <= maximalY; y++)
{
barycentricPoint.calc_lambda_for_Transformation(x, y);
if (barycentricPoint.lambda0 > 0 && barycentricPoint.lambda1 > 0 && barycentricPoint.lambda2 > 0)
{
double z = barycentricPoint.lambda0 * polygon[0].originalZ + barycentricPoint.lambda1 * polygon[1].originalZ + barycentricPoint.lambda2 * polygon[2].originalZ;
if (z < zBuffer.getZBuffer(x, y))
{
int brightness = (int)Math.Abs((255 * (barycentricPoint.lambda0 * l0 + barycentricPoint.lambda1 * l1 + barycentricPoint.lambda2 * l2)));
image.setPixel(x, y, new clsRGB(brightness, 0, 0));
zBuffer.setZBuffer(x, y, z);
}
}
}
}
}