public void PrepareStrip(Vector2[] positions, float[] rotations, StripColorFunction colorFunction, StripHalfWidthFunction widthFunction, Vector2 offsetForAllPositions = default(Vector2), int?expectedVertexPairsAmount = null, bool includeBacksides = false)
{
int num = positions.Length;
int num2 = _vertexAmountCurrentlyMaintained = num * 2;
if (_vertices.Length < num2)
{
Array.Resize(ref _vertices, num2);
}
int num3 = num;
if (expectedVertexPairsAmount.HasValue)
{
num3 = expectedVertexPairsAmount.Value;
}
for (int i = 0; i < num; i++)
{
if (positions[i] == Vector2.Zero)
{
num = i - 1;
_vertexAmountCurrentlyMaintained = num * 2;
break;
}
Vector2 pos = positions[i] + offsetForAllPositions;
float rot = MathHelper.WrapAngle(rotations[i]);
int indexOnVertexArray = i * 2;
float progressOnStrip = (float)i / (float)(num3 - 1);
AddVertex(colorFunction, widthFunction, pos, rot, indexOnVertexArray, progressOnStrip);
}
PrepareIndices(num, includeBacksides);
}
private void AddVertex(StripColorFunction colorFunction, StripHalfWidthFunction widthFunction, Vector2 pos, float rot, int indexOnVertexArray, float progressOnStrip)
{
while (indexOnVertexArray + 1 >= _vertices.Length)
{
Array.Resize(ref _vertices, _vertices.Length * 2);
}
Color color = colorFunction(progressOnStrip);
float num = widthFunction(progressOnStrip);
Vector2 value = MathHelper.WrapAngle(rot - (float)Math.PI / 2f).ToRotationVector2() * num;
_vertices[indexOnVertexArray].Position = pos + value;
_vertices[indexOnVertexArray + 1].Position = pos - value;
_vertices[indexOnVertexArray].TexCoord = new Vector3(progressOnStrip, num, num);
_vertices[indexOnVertexArray + 1].TexCoord = new Vector3(progressOnStrip, 0f, num);
_vertices[indexOnVertexArray].Color = color;
_vertices[indexOnVertexArray + 1].Color = color;
}
public void PrepareStripWithProceduralPadding(Vector2[] positions, float[] rotations, StripColorFunction colorFunction, StripHalfWidthFunction widthFunction, Vector2 offsetForAllPositions = default(Vector2), bool includeBacksides = false)
{
int num = positions.Length;
_temporaryPositionsCache.Clear();
_temporaryRotationsCache.Clear();
for (int i = 0; i < num && !(positions[i] == Vector2.Zero); i++)
{
Vector2 vector = positions[i];
float num2 = MathHelper.WrapAngle(rotations[i]);
_temporaryPositionsCache.Add(vector);
_temporaryRotationsCache.Add(num2);
if (i + 1 >= num || !(positions[i + 1] != Vector2.Zero))
{
continue;
}
Vector2 vector2 = positions[i + 1];
float num3 = MathHelper.WrapAngle(rotations[i + 1]);
int num4 = (int)(Math.Abs(MathHelper.WrapAngle(num3 - num2)) / ((float)Math.PI / 12f));
if (num4 != 0)
{
float num5 = vector.Distance(vector2);
Vector2 value = vector + num2.ToRotationVector2() * num5;
Vector2 value2 = vector2 + num3.ToRotationVector2() * (0f - num5);
int num6 = num4 + 2;
float num7 = 1f / (float)num6;
Vector2 target = vector;
for (float num8 = num7; num8 < 1f; num8 += num7)
{
Vector2 vector3 = Vector2.CatmullRom(value, vector, vector2, value2, num8);
float item = MathHelper.WrapAngle(vector3.DirectionTo(target).ToRotation());
_temporaryPositionsCache.Add(vector3);
_temporaryRotationsCache.Add(item);
target = vector3;
}
}
}
int count = _temporaryPositionsCache.Count;
for (int j = 0; j < count; j++)
{
Vector2 pos = _temporaryPositionsCache[j] + offsetForAllPositions;
float rot = _temporaryRotationsCache[j];
int indexOnVertexArray = j * 2;
float progressOnStrip = (float)j / (float)(count - 1);
AddVertex(colorFunction, widthFunction, pos, rot, indexOnVertexArray, progressOnStrip);
}
_vertexAmountCurrentlyMaintained = count * 2;
PrepareIndices(count, includeBacksides);
}