public void DrawSolidCircle(FVector2 center, float radius, FVector2 axis, Color color)
{
//if (!_primitiveBatch.IsReady())
//{
// throw new InvalidOperationException("BeginCustomDraw must be called before drawing anything.");
//}
const double increment = Math.PI * 2.0 / CircleSegments;
double theta = 0.0;
Color colorFill = color * 0.5f;
FVector2 v0 = center + radius * new FVector2((float)Math.Cos(theta), (float)Math.Sin(theta));
theta += increment;
for (int i = 1; i < CircleSegments - 1; i++)
{
FVector2 v1 = center + radius * new FVector2((float)Math.Cos(theta), (float)Math.Sin(theta));
FVector2 v2 = center +
radius *
new FVector2((float)Math.Cos(theta + increment), (float)Math.Sin(theta + increment));
triangleListBatch.Add(FDVertex.FromTriangleList(v0, v1, v2, colorFill));
//_primitiveBatch.AddVertex(v0, colorFill, PrimitiveType.TriangleList);
//_primitiveBatch.AddVertex(v1, colorFill, PrimitiveType.TriangleList);
//_primitiveBatch.AddVertex(v2, colorFill, PrimitiveType.TriangleList);
theta += increment;
}
DrawCircle(center, radius, color);
DrawSegment(center, center + axis * radius, color);
}
public void DrawSolidPolygon(FVector2[] vertices, int count, Color color, bool outline)
{
//if (!_primitiveBatch.IsReady())
//{
// throw new InvalidOperationException("BeginCustomDraw must be called before drawing anything.");
//}
if (count == 2)
{
DrawPolygon(vertices, count, color);
return;
}
Color colorFill = color * (outline ? 0.5f : 1.0f);
for (int i = 1; i < count - 1; i++)
{
triangleListBatch.Add(FDVertex.FromTriangleList(vertices[0], vertices[i], vertices[i + 1], colorFill));
//_primitiveBatch.AddVertex(vertices[0], colorFill, PrimitiveType.TriangleList);
//_primitiveBatch.AddVertex(vertices[i], colorFill, PrimitiveType.TriangleList);
//_primitiveBatch.AddVertex(vertices[i + 1], colorFill, PrimitiveType.TriangleList);
}
if (outline)
{
DrawPolygon(vertices, count, color);
}
}
