public static ShapeVertexInfo GetVertexInfoInRange(ShapeData shape, int pointId)
{
ShapeVertexInfo vertex = new ShapeVertexInfo();
vertex.position = shape.GetPolyPosition(pointId);
vertex.inTangent = shape.GetPolyInTangent(pointId);
vertex.outTangent = shape.GetPolyOutTangent(pointId);
vertex.strokeColor = shape.GetPolyStrokeColor(pointId);
vertex.strokeWidth = shape.GetPolyStrokeWidth(pointId);
vertex.type = shape.GetPolyPointType(pointId);
return(vertex);
}
public static ShapeVertexInfo GetPolyVertexInfo(ShapeData shape, int pointId)
{
int pointCount = shape.GetPolyPointCount();
if (pointCount == 0)
{
return(new ShapeVertexInfo());
}
if (pointId >= 0 && pointId < pointCount)
{
return(GetVertexInfoInRange(shape, pointId));
}
if (shape.IsStrokeClosed)
{
pointId = MathUtils.CircularModulo(pointId, pointCount);
return(GetVertexInfoInRange(shape, pointId));
}
else
{
if (pointId < 0)
{
ShapeVertexInfo vertex = GetVertexInfoInRange(shape, 0);
if (shape.GetPolyPointType(0) == ShapePointType.Corner)
{
vertex.position += shape.GetPolyPosition(0) - (shape.GetPolyPosition(1) + shape.GetPolyInTangent(1));
}
else
{
vertex.position += -shape.GetPolyOutTangent(0);
}
return(vertex);
}
else
{
ShapeVertexInfo vertex = GetVertexInfoInRange(shape, pointCount - 1);
if (shape.GetPolyPointType(pointCount - 1) == ShapePointType.Corner)
{
vertex.position += shape.GetPolyPosition(pointCount - 1) - (shape.GetPolyPosition(pointCount - 2) + shape.GetPolyOutTangent(pointCount - 2)); // create new point as extension of existing line
}
else
{
vertex.position += -shape.GetPolyInTangent(pointCount - 1);
}
return(vertex);
}
}
}