public override void BeginApplyStroke(Ray ray)
{
RaycastHit hit;
Mesh msh = target.GetComponent <MeshFilter>().sharedMesh;
didHit = (RXLookingGlass.IntersectRayMesh(ray, msh, target.transform.localToWorldMatrix, out hit));
if (didHit)
{
var triangles = msh.triangles;
int triangle = hit.triangleIndex;
int i0 = triangles[triangle];
int i1 = triangles[triangle + 1];
int i2 = triangles[triangle + 2];
var bary = hit.barycentricCoordinate;
Matrix4x4 mtx = target.transform.worldToLocalMatrix;
normal = target.GetSafeNormal(i0) * bary.x +
target.GetSafeNormal(i1) * bary.y +
target.GetSafeNormal(i2) * bary.z;
tangent = target.GetSafeTangent(i0) * bary.x +
target.GetSafeTangent(i1) * bary.y +
target.GetSafeTangent(i2) * bary.z;
normal = mtx.MultiplyVector(mtx.MultiplyVector(normal));
Vector3 tng = new Vector3(tangent.x, tangent.y, tangent.z);
tng = mtx.MultiplyVector(mtx.MultiplyVector(tng));
tangent.x = tng.x;
tangent.y = tng.y;
tangent.z = tng.z;
}
}
