static Rect DrawMarker(P value, Vector2 startPos, Vector2 endPos, Vector2 size, Texture2D image, Color markerColor, float position = 0.75f)
{
Vector2 markerCenter = startPos + (endPos - startPos).normalized * position;
float rotation = Util.GetAngle(endPos - startPos);
var markerRect = Util.CenterRect(markerCenter, size);
RelationDrawUtil.DrawRotatedTexture(image, markerCenter, size, rotation, markerColor);
return(markerRect);
}
static Dictionary <Relation <T, P>, Rect> DrawSelfMarkers(IEnumerable <Relation <T, P> > edges, Vector2 circleCenter, float radius, float startAngle, float arcLength, Vector2 markerSize, Texture2D image, System.Func <P, Color> GetMarkerColor)
{
var markerDict = new Dictionary <Relation <T, P>, Rect>();
if (!edges.Any())
{
return(markerDict);
}
var edgeArray = edges.ToArray();
int numEdges = edgeArray.Length;
float arcSegmentSize = arcLength / numEdges;
for (int i = 0; i < numEdges; i++)
{
float angle = startAngle + (i + 0.5f) * arcSegmentSize;
var position = Util.GetPositionOnCircle(angle) * radius + circleCenter;
var rotation = angle + Mathf.PI / 2; // circle tangent
RelationDrawUtil.DrawRotatedTexture(image, position, markerSize, rotation, GetMarkerColor(edgeArray[i].Tag));
var edge = edgeArray[i];
markerDict[edge] = Util.CenterRect(position, markerSize);
}
return(markerDict);
}