void PaintRayAll(Vector3 pos, Vector3 dir)
{
// Paint all places where this ray hits paintable objects
RaycastHit hit;
List <Vector3> hitList = new List <Vector3>();
GameObject gObject = null;
// Forward pass: record hits (ray enters surface) and paint them
while (Physics.Raycast(pos, dir, out hit, maxDist, layerMask))
{
GameObject g = hit.transform.gameObject;
gObject = g;
pt.PaintUV(g, hit.textureCoord);
hitList.Add(hit.point);
pos = hit.point + 0.001f * dir; // move slightly forward of latest hit
}
// Backward pass: Detect surface exits and paint them
if (hitList.Count != 0)
{
Vector3 backHitStart = hitList[hitList.Count - 1] + (maxForward * dir);
hitList.Add(backHitStart);
hitList.Reverse();
for (int i = 0; i < hitList.Count; i++)
{
if (Physics.Raycast(hitList[i], (-1 * dir), out hit, maxDist, layerMask))
{
pt.PaintUV(gObject, hit.textureCoord);
}
}
}
}
void PaintFirstHit()
{
// Local "up"
var raydir = transform.TransformDirection(Vector3.up);
RaycastHit hit;
// Cast a ray in direction "up", deteremine what paintable is first hit.
if (Physics.Raycast(transform.position, raydir, out hit, maxDist, layerMask))
{
GameObject g = hit.transform.gameObject;
if (pt != null)
{
// Paint on the shared PaintableTexture at the (u,v) coordinates
// of the point where the ray met the object.
pt.PaintUV(g, hit.textureCoord);
}
}
}