public void Execute(int index)
{
if (Excluded[index] == 1)
{
return;
}
Vector2 position = new Vector2(Position[index].x, Position[index].z);
if (LineSegment2D.DistanceToPoint(position) < Width / 2f)
{
VegetationMaskScale[index] = math.max(VegetationMaskScale[index], Scale);
VegetationMaskDensity[index] =
math.max(VegetationMaskDensity[index], Denisty);
}
}
public void Execute(int index)
{
if (Excluded[index] == 1)
{
return;
}
Vector2 position = new Vector2(Position[index].x, Position[index].z);
float perlin = noise.snoise(new float2(position.x / NoiseScale, position.y / NoiseScale));
perlin += 1f;
perlin /= 2f;
perlin = math.clamp(perlin, 0, 1);
float additionalWidth = math.lerp(AdditionalWidth, AdditionalWidthMax, perlin);
if (LineSegment2D.DistanceToPoint(position) < (additionalWidth + Width / 2f))
{
Excluded[index] = 1;
}
}
public void DistToPoint_Test()
{
var a11 = new Vector2D(-10, 0);
var a12 = new Vector2D(10, 0);
var seg1 = new LineSegment2D(a11, a12);
var a21 = new Vector2D(0, -10);
var a22 = new Vector2D(0, 10);
var seg2 = new LineSegment2D(a21, a22);
for (int x = -10; x < 10; x++)
{
for (int y = -20; y < 20; y++)
{
var p = new Vector2D(x, y);
var dist1 = seg1.DistanceToPoint(p);
Assert.AreEqual(System.Math.Abs(y), dist1, "dist1 = " + dist1 + " y = " + System.Math.Abs(y));
var dist2 = seg2.DistanceToPoint(p);
Assert.AreEqual(System.Math.Abs(x), dist2, "dist2 = " + dist2 + " x = " + System.Math.Abs(x));
Vector2D projPoint;
if (seg1.ProjectPointToLine(p, out projPoint))
{
var dist = projPoint.Distance(p);
Assert.AreEqual(dist1, dist, "dist1 = " + dist1 + " dist = " + dist);
}
if (seg2.ProjectPointToLine(p, out projPoint))
{
var dist = projPoint.Distance(p);
Assert.AreEqual(dist2, dist, "dist2 = " + dist1 + " dist = " + dist);
}
}
}
}
public void ProjectPointToLine_Test()
{
var a11 = new Vector2D(-10, 0);
var a12 = new Vector2D(10, 0);
var seg1 = new LineSegment2D(a11, a12);
for (int x = -20; x < 20; x++)
{
var p = new Vector2D(x, 10);
var dist1 = seg1.DistanceToPoint(p);
Assert.AreEqual(10, dist1);
Vector2D projPoint;
var res = seg1.ProjectPointToLine(p, out projPoint);
if (x >= a11.X && x <= a12.X)
{
Assert.IsTrue(res);
var dist = projPoint.Distance(p);
Assert.AreEqual(dist1, dist, "dist1 = " + dist1 + " dist = " + dist);
var contains = seg1.Bounds.Contains(projPoint);
Assert.IsTrue(contains);
}
else
{
Assert.IsFalse(res);
var contains = seg1.Bounds.Contains(projPoint);
Assert.IsFalse(contains);
}
}
var a21 = new Vector2D(0, -10);
var a22 = new Vector2D(0, 10);
var seg2 = new LineSegment2D(a21, a22);
for (int y = -20; y < 20; y++)
{
var p = new Vector2D(10, y);
var dist2 = seg2.DistanceToPoint(p);
Assert.AreEqual(10, dist2);
Vector2D projPoint;
var res = seg2.ProjectPointToLine(p, out projPoint);
if (y >= a21.Y && y <= a22.Y)
{
Assert.IsTrue(res);
var dist = projPoint.Distance(p);
Assert.AreEqual(dist2, dist, "dist2 = " + dist2 + " dist = " + dist);
var contains = seg2.Bounds.Contains(projPoint);
Assert.IsTrue(contains);
}
else
{
Assert.IsFalse(res);
var contains = seg2.Bounds.Contains(projPoint);
Assert.IsFalse(contains);
}
}
//for (int y = -20; y < 20; y++)
//{
//}
}