public CableCurve(CableCurve v)
{
points = v.Points();
m_start = v.start;
m_end = v.end;
m_slack = v.slack;
m_steps = v.steps;
m_regen = v.regenPoints;
}
protected override void OnPopulateMesh(VertexHelper vh)
{
if (m_points == null)
{
return;
}
GeneratedUVs();
Vector2[] pointsToDraw = m_points;
//If Bezier is desired, pick the implementation
if (BezierMode != BezierType.None && BezierMode != BezierType.Catenary && m_points.Length > 3)
{
BezierPath bezierPath = new BezierPath();
bezierPath.SetControlPoints(pointsToDraw);
bezierPath.SegmentsPerCurve = bezierSegmentsPerCurve;
List <Vector2> drawingPoints;
switch (BezierMode)
{
case BezierType.Basic:
drawingPoints = bezierPath.GetDrawingPoints0();
break;
case BezierType.Improved:
drawingPoints = bezierPath.GetDrawingPoints1();
break;
default:
drawingPoints = bezierPath.GetDrawingPoints2();
break;
}
pointsToDraw = drawingPoints.ToArray();
}
if (BezierMode == BezierType.Catenary && m_points.Length == 2)
{
CableCurve cable = new CableCurve(pointsToDraw);
cable.slack = Resoloution;
cable.steps = BezierSegmentsPerCurve;
pointsToDraw = cable.Points();
}
if (ImproveResolution != ResolutionMode.None)
{
pointsToDraw = IncreaseResolution(pointsToDraw);
}
// scale based on the size of the rect or use absolute, this is switchable
var sizeX = !relativeSize ? 1 : rectTransform.rect.width;
var sizeY = !relativeSize ? 1 : rectTransform.rect.height;
var offsetX = -rectTransform.pivot.x * sizeX;
var offsetY = -rectTransform.pivot.y * sizeY;
vh.Clear();
// Generate the quads that make up the wide line
var segments = new List <UIVertex[]>();
if (lineList)
{
for (var i = 1; i < pointsToDraw.Length; i += 2)
{
var start = pointsToDraw[i - 1];
var end = pointsToDraw[i];
start = new Vector2(start.x * sizeX + offsetX, start.y * sizeY + offsetY);
end = new Vector2(end.x * sizeX + offsetX, end.y * sizeY + offsetY);
if (lineCaps)
{
segments.Add(CreateLineCap(start, end, SegmentType.Start));
}
//segments.Add(CreateLineSegment(start, end, SegmentType.Full));
segments.Add(CreateLineSegment(start, end, SegmentType.Middle));
if (lineCaps)
{
segments.Add(CreateLineCap(start, end, SegmentType.End));
}
}
}
else
{
for (var i = 1; i < pointsToDraw.Length; i++)
{
var start = pointsToDraw[i - 1];
var end = pointsToDraw[i];
start = new Vector2(start.x * sizeX + offsetX, start.y * sizeY + offsetY);
end = new Vector2(end.x * sizeX + offsetX, end.y * sizeY + offsetY);
if (lineCaps && i == 1)
{
segments.Add(CreateLineCap(start, end, SegmentType.Start));
}
segments.Add(CreateLineSegment(start, end, SegmentType.Middle));
//segments.Add(CreateLineSegment(start, end, SegmentType.Full));
if (lineCaps && i == pointsToDraw.Length - 1)
{
segments.Add(CreateLineCap(start, end, SegmentType.End));
}
}
}
// Add the line segments to the vertex helper, creating any joins as needed
for (var i = 0; i < segments.Count; i++)
{
if (!lineList && i < segments.Count - 1)
{
var vec1 = segments[i][1].position - segments[i][2].position;
var vec2 = segments[i + 1][2].position - segments[i + 1][1].position;
var angle = Vector2.Angle(vec1, vec2) * Mathf.Deg2Rad;
// Positive sign means the line is turning in a 'clockwise' direction
var sign = Mathf.Sign(Vector3.Cross(vec1.normalized, vec2.normalized).z);
// Calculate the miter point
var miterDistance = lineThickness / (2 * Mathf.Tan(angle / 2));
var miterPointA = segments[i][2].position - vec1.normalized * miterDistance * sign;
var miterPointB = segments[i][3].position + vec1.normalized * miterDistance * sign;
var joinType = LineJoins;
if (joinType == JoinType.Miter)
{
// Make sure we can make a miter join without too many artifacts.
if (miterDistance < vec1.magnitude / 2 && miterDistance < vec2.magnitude / 2 && angle > MIN_MITER_JOIN)
{
segments[i][2].position = miterPointA;
segments[i][3].position = miterPointB;
segments[i + 1][0].position = miterPointB;
segments[i + 1][1].position = miterPointA;
}
else
{
joinType = JoinType.Bevel;
}
}
if (joinType == JoinType.Bevel)
{
if (miterDistance < vec1.magnitude / 2 && miterDistance < vec2.magnitude / 2 && angle > MIN_BEVEL_NICE_JOIN)
{
if (sign < 0)
{
segments[i][2].position = miterPointA;
segments[i + 1][1].position = miterPointA;
}
else
{
segments[i][3].position = miterPointB;
segments[i + 1][0].position = miterPointB;
}
}
var join = new UIVertex[] { segments[i][2], segments[i][3], segments[i + 1][0], segments[i + 1][1] };
vh.AddUIVertexQuad(join);
}
}
vh.AddUIVertexQuad(segments[i]);
}
if (vh.currentVertCount > 64000)
{
Debug.LogError("Max Verticies size is 64000, current mesh vertcies count is [" + vh.currentVertCount + "] - Cannot Draw");
vh.Clear();
return;
}
}