public void OnSceneGUI()
{
PointableCylinder cylinder = target as PointableCylinder;
if (cylinder.Cylinder != null)
{
Draw(cylinder);
}
}
public static void Draw(PointableCylinder pointable)
{
Color prevColor = Handles.color;
Handles.color = pointable.IsValid ? ValidColor : InvalidColor;
float gizmoHeight = pointable.Height;
float camYOffset = 0;
bool infiniteHeight = pointable.Height <= 0;
if (infiniteHeight && SceneView.lastActiveSceneView?.camera != null)
{
gizmoHeight = 1000f;
Vector3 sceneCamPos = SceneView.lastActiveSceneView.camera.transform.position;
camYOffset = pointable.Cylinder.transform.InverseTransformPoint(sceneCamPos).y;
}
for (int i = 0; i < 2; ++i)
{
bool isTop = i == 1;
float y = isTop ? gizmoHeight / 2 : -gizmoHeight / 2;
int numSegments = (int)(NUM_SEGMENTS * Mathf.Max(pointable.Radius / 2, 1));
Vector3 prevSegmentWorld = Vector3.zero;
for (int seg = 0; seg <= numSegments; ++seg)
{
float ratio = (float)seg / numSegments * Mathf.PI * 2;
float x = Mathf.Cos(ratio) * pointable.Radius;
float z = Mathf.Sin(ratio) * pointable.Radius;
Vector3 curSegmentLocal = new Vector3(x, y + camYOffset, z);
Vector3 curSegmentWorld = pointable.Cylinder.transform.TransformPoint(curSegmentLocal);
if (isTop) // Draw connecting lines from top circle
{
Vector3 bottomVert = new Vector3(curSegmentLocal.x,
curSegmentLocal.y - gizmoHeight,
curSegmentLocal.z);
bottomVert = pointable.Cylinder.transform.TransformPoint(bottomVert);
Handles.DrawLine(curSegmentWorld, bottomVert);
}
if (seg > 0 && !infiniteHeight)
{
Handles.DrawLine(curSegmentWorld, prevSegmentWorld);
}
prevSegmentWorld = curSegmentWorld;
}
}
Handles.color = prevColor;
}