public DistanceGrid(IHasArea shape, Scalar spacing)
{
if (shape == null) { throw new ArgumentNullException("shape"); }
if (spacing <= 0) { throw new ArgumentOutOfRangeException("spacing"); }
Matrix2x3 ident = Matrix2x3.Identity;
shape.CalcBoundingRectangle(ref ident, out this.rect);
this.gridSpacing = spacing;
this.gridSpacingInv = 1 / spacing;
int xSize = (int)Math.Ceiling((rect.Max.X - rect.Min.X) * gridSpacingInv) + 2;
int ySize = (int)Math.Ceiling((rect.Max.Y - rect.Min.Y) * gridSpacingInv) + 2;
this.nodes = new Scalar[xSize][];
for (int index = 0; index < xSize; ++index)
{
this.nodes[index] = new Scalar[ySize];
}
Vector2D point;
point.X = rect.Min.X;
for (int x = 0; x < xSize; ++x, point.X += gridSpacing)
{
point.Y = rect.Min.Y;
for (int y = 0; y < ySize; ++y, point.Y += gridSpacing)
{
shape.GetDistance(ref point, out nodes[x][y]);
}
}
}
public double GetArea(IHasArea figure)
{
if (figure == null)
{
throw new ArgumentNullException(nameof(figure));
}
return(figure.CalculateArea());
}
public DistanceGrid(IHasArea shape, Scalar spacing)
{
if (shape == null)
{
throw new ArgumentNullException("shape");
}
if (spacing <= 0)
{
throw new ArgumentOutOfRangeException("spacing");
}
Matrix2x3 ident = Matrix2x3.Identity;
shape.CalcBoundingRectangle(ref ident, out this.rect);
this.gridSpacing = spacing;
this.gridSpacingInv = 1 / spacing;
int xSize = (int)Math.Ceiling((rect.Max.X - rect.Min.X) * gridSpacingInv) + 2;
int ySize = (int)Math.Ceiling((rect.Max.Y - rect.Min.Y) * gridSpacingInv) + 2;
this.nodes = new Scalar[xSize][];
for (int index = 0; index < xSize; ++index)
{
this.nodes[index] = new Scalar[ySize];
}
Vector2D point;
point.X = rect.Min.X;
for (int x = 0; x < xSize; ++x, point.X += gridSpacing)
{
point.Y = rect.Min.Y;
for (int y = 0; y < ySize; ++y, point.Y += gridSpacing)
{
shape.GetDistance(ref point, out nodes[x][y]);
}
}
}
