public void RotateX(int degrees)
{
List <Vector3> posPom = new List <Vector3>();
foreach (var point in vertices)
{
posPom.Add(Vector3.Transform(point.Position, Matrix.CreateRotationX(MathHelper.ToRadians(degrees))));
}
int i = 0;
foreach (var point in posPom)
{
vertices[i] = new VertexPositionNormalColor(point, vertices[i].Normal, vertices[i].Color);
i++;
}
}
public void Scale(float scaleFactor)
{
List <Vector3> posPom = new List <Vector3>();
foreach (var point in vertices)
{
posPom.Add(Vector3.Transform(point.Position, Matrix.CreateScale(scaleFactor)));
}
int i = 0;
foreach (var point in posPom)
{
vertices[i] = new VertexPositionNormalColor(point, vertices[i].Normal, vertices[i].Color);
i++;
}
}
public void Translate(Vector3 translation)
{
List <Vector3> posPom = new List <Vector3>();
foreach (var point in vertices)
{
posPom.Add(Vector3.Transform(point.Position, Matrix.CreateTranslation(translation)));
}
int i = 0;
foreach (var point in posPom)
{
vertices[i] = new VertexPositionNormalColor(point, vertices[i].Normal, vertices[i].Color);
i++;
}
}
private void CreateSphereVertices()
{
vertices = new VertexPositionNormalColor[nvertices];
Vector3 center = new Vector3(0, 0, 0);
Vector3 rad = new Vector3((float)Math.Abs(radius), 0, 0);
for (int x = 0; x < m; x++) //90 circles, difference between each is 4 degrees
{
float difx = 360.0f / m;
for (int y = 0; y <= m / 2; y++) //90 veritces, difference between each is 4 degrees
{
float dify = 360.0f / m;
Matrix zrot = Matrix.CreateRotationZ(MathHelper.ToRadians(y * dify)); //rotate vertex around z
Matrix yrot = Matrix.CreateRotationY(MathHelper.ToRadians(x * difx)); // rotate circle around y
Vector3 point = Vector3.Transform(Vector3.Transform(rad, zrot), yrot); //transformation
vertices[x + y * m] = new VertexPositionNormalColor(point, GetNormal(point), color);
}
}
}
