void CreateInner()
{
using (var vh = new VertexHelper()) {
int numTris = Mathf.CeilToInt(diameter * Mathf.PI / MAX_FRAGMENT_LENGTH);
float centerAngle = 2 * Mathf.PI / numTris;
Color c = Color.white;
// create verticies
vh.AddVert(Vector3.zero, c, Vector2.zero); // midpoint
for (int i = 0; i < numTris; i++)
{
float angle = centerAngle * i;
float x = Mathf.Cos(angle) * 0.5f;
float y = Mathf.Sin(angle) * 0.5f;
vh.AddVert(new Vector3(x, y, 0), c, Vector2.zero);
}
// create triangles
for (int i = 0; i < numTris - 1; i++)
{
vh.AddTriangle(0, i + 2, i + 1);
}
// come around
vh.AddTriangle(0, 1, numTris);
MeshUtil.UpdateMesh(innerMeshFilter, vh);
}
}
void CreateSolid()
{
Debug.Log("solid line");
using (var vh = new VertexHelper()) {
MeshUtil.AddRect(BoundsUtil.UnitBounds, vh);
MeshUtil.UpdateMesh(GetComponent <MeshFilter>(), vh);
}
}
void CreateBorderSolid()
{
using (var vh = new VertexHelper()) {
int numQuads = Mathf.CeilToInt(diameter * Mathf.PI / MAX_FRAGMENT_LENGTH);
float centerAngle = 2 * Mathf.PI / numQuads;
float scaledBorderThickness = property.border.thickness / property.diameter;
Color c = Color.white;
for (int i = 0; i < numQuads; i++)
{
float angle = centerAngle * i;
float x = Mathf.Cos(angle) * 0.5f;
float y = Mathf.Sin(angle) * 0.5f;
float scaledInnerRadius = 1; // default = outer
switch (property.border.position)
{
case BorderPosition.Center:
scaledInnerRadius -= scaledBorderThickness / 2;
break;
case BorderPosition.Inside:
scaledInnerRadius -= scaledBorderThickness;
break;
}
float scaledOuterRadius = scaledInnerRadius + scaledBorderThickness;
vh.AddVert(new Vector3(x * scaledInnerRadius, y * scaledInnerRadius, 0),
c, Vector2.zero);
vh.AddVert(new Vector3(x * scaledOuterRadius, y * scaledOuterRadius, 0),
c, Vector2.zero);
}
for (int i = 0; i < numQuads - 1; i++)
{
int idxBase = 2 * i; // two new vertices per quad
vh.AddTriangle(idxBase, idxBase + 2, idxBase + 1);
vh.AddTriangle(idxBase + 1, idxBase + 2, idxBase + 3);
}
int finalIdxBase = 2 * numQuads - 2; // last two vertices
vh.AddTriangle(finalIdxBase, 0, finalIdxBase + 1);
vh.AddTriangle(finalIdxBase + 1, 0, 1);
MeshUtil.UpdateMesh(borderMeshFilter, vh);
}
}
void CreateDashed()
{
float fullSegmentLength = (property.border.dashLength + property.border.gapLength);
int numFragments = Mathf.CeilToInt(property.length / fullSegmentLength);
if (numFragments > MAX_FRAGMENTS)
{
Debug.LogError("Line has too many fragments (" + numFragments + ")");
return;
}
using (var vh = new VertexHelper()) {
for (int i = 0; i < numFragments; i++)
{
float deltaX = i * fullSegmentLength / property.length;
var min = new Vector2(-0.5f + deltaX, -0.5f);
var max = new Vector2(-0.5f + deltaX + property.border.dashLength / property.length, 0.5f);
MeshUtil.AddRect(new Bounds().WithMinMax(min, max), vh);
}
MeshUtil.UpdateMesh(GetComponent <MeshFilter>(), vh);
}
}
/***** PRIVATE: RENDERING *****/
void RemoveBorder()
{
using (var vh = new VertexHelper()) {
MeshUtil.UpdateMesh(borderMeshFilter, vh);
}
}