public void TestBarycentric2DCoords()
{
var a = new Vector2(0, 0);
var b = new Vector2(10, 0);
var c = new Vector2(0, 10);
//First coord should be large
var coords = Intersections.Barycentric2DCoords(new Vector2(0.5f, 0.5f), a, b, c);
Assert.That(coords.x, Is.GreaterThan(0.8));
Assert.That(coords.x + coords.y + coords.z, Is.EqualTo(1));
//Second coord should be large
coords = Intersections.Barycentric2DCoords(new Vector2(9f, 0.5f), a, b, c);
Assert.That(coords.y, Is.GreaterThan(0.8));
Assert.That(coords.x + coords.y + coords.z, Is.EqualTo(1));
//Third coord should be large
coords = Intersections.Barycentric2DCoords(new Vector2(0.5f, 9f), a, b, c);
Assert.That(coords.z, Is.GreaterThan(0.8));
Assert.That(coords.x + coords.y + coords.z, Is.EqualTo(1));
//Some manual case
coords = Intersections.Barycentric2DCoords(new Vector2(94, 27), new Vector2(86, 34), new Vector2(119, 23), new Vector2(93, -2));
//Assert.tha
}
/*
* /// <summary>
* /// Test line-triangle intersection
* /// </summary>
* void OnDrawGizmos()
* {
* if(!Application.isPlaying)
* return;
*
* DrawPolyline.ForGizmo(new Vector3[] {_handle1.transform.position, _handle2.transform.position, _handle3.transform.position, _handle1.transform.position }, Color.white);
*
* //var screenRay = SceneView.currentDrawingSceneView.camera.ScreenPointToRay(Input.mousePosition);
* var screenRay = new Ray(Vector3.zero, Vector3.forward);
* Debug.DrawRay(screenRay.origin, screenRay.direction * 1000, Color.yellow);
* Vector3 intersectPos;
* var result = Intersections.LineTriangleIntersection(screenRay, _handle1.transform.position, _handle2.transform.position,
* _handle3.transform.position, out intersectPos);
*
* if(result == 1)
* {
* Gizmos.color = Color.red;
* Gizmos.DrawSphere(intersectPos, 0.1f);
* }
* else
* Debug.Log(result);
* }
*/
/// <summary>
/// Test barycentric interpolation
/// </summary>
void OnDrawGizmos()
{
if (!Application.isPlaying)
{
return;
}
_handle1.transform.position = (Vector2)_handle1.transform.position;
_handle2.transform.position = (Vector2)_handle2.transform.position;
_handle3.transform.position = (Vector2)_handle3.transform.position;
_handle4.transform.position = (Vector2)_handle4.transform.position;
DrawPolyline.ForGizmo(new[]
{
_handle1.transform.position, _handle2.transform.position, _handle3.transform.position
}, Color.white, true);
Gizmos.color = Color.red;
Gizmos.DrawSphere(_handle1.transform.position, 0.5f);
Gizmos.color = Color.green;
Gizmos.DrawSphere(_handle2.transform.position, 0.5f);
Gizmos.color = Color.blue;
Gizmos.DrawSphere(_handle3.transform.position, 0.5f);
var result = Intersections.Barycentric2DCoords(_handle4.transform.position, _handle1.transform.position,
_handle2.transform.position, _handle3.transform.position);
Debug.Log(result);
var resultColor = new Color(result.x, result.y, result.z);
Gizmos.color = resultColor;
Gizmos.DrawSphere(_handle4.transform.position, 0.5f);
}
