koobas.hobune.stream
Snap to grid edge midpoints?
Hey, I managed to get grid snapping to work, but i have no idea how to snap to the middle of the edges of the grid, any help would be appreciated.
This is how im snapping to the grid :
gridPosition = new Vector3(Mathf.RoundToInt(position.x / gridSize) * gridSize, 0,
Mathf.RoundToInt(position.z / gridSize) * gridSize);
what i want is essentially to snap to the red points below, i just don't really know how to round to those points
Best Answer
Alright i found a solution, here it is for posterity
gridHitPos = new Vector3(Mathf.RoundToInt(hitPos.x / gridSize) * gridSize, 0,
Mathf.RoundToInt(hitPos.z / gridSize) * gridSize);
cornerHitPos = new Vector3(Mathf.FloorToInt(hitPos.x / gridSize) * gridSize, 0,
Mathf.FloorToInt(hitPos.z / gridSize) * gridSize);
Vector3 localPos = hitPos - cornerHitPos;
midHitPos = cornerHitPos;
if( localPos.z < gridSize / 2.0f )
{
if( localPos.x > localPos.z && gridSize - localPos.x > localPos.z )
{
midHitPos.x += gridSize / 2.0f;
}
else if( localPos.x > gridSize / 2.0f )
{
midHitPos.x += gridSize;
midHitPos.z += gridSize / 2.0f;
}
else
{
midHitPos.z += gridSize / 2.0f;
}
}
else
{
if( localPos.x < localPos.z && gridSize - localPos.x < localPos.z )
{
midHitPos.x += gridSize / 2.0f;
midHitPos.z += gridSize;
}
else if( localPos.x > gridSize / 2.0f )
{
midHitPos.x += gridSize;
midHitPos.z += gridSize / 2.0f;
}
else
{
midHitPos.z += gridSize / 2.0f;
}
}
