public Vector3 SnapExtents1D(Vector3 currentPosition)
{
this.snapResult = SnapResult1D.None;
var boundsActive = Snapping.BoundsSnappingActive;
var pivotActive = Snapping.PivotSnappingActive;
// Get custom snapping positions along the ray
var haveCustomSnapping = Snapping.GetCustomSnappingPoints(this.slideOffset + slidePosition, this.slideDirection, 0, s_CustomSnapPoints);
if (!boundsActive && !pivotActive && !haveCustomSnapping)
{
return(currentPosition);
}
const float kMinPointSnap = 0.25f;
float minPointSnap = !(boundsActive || pivotActive) ? kMinPointSnap : float.PositiveInfinity;
// Offset to snapped position relative to the unsnapped position
// (used to determine which snap value is closest to unsnapped position)
// Smallest value is used
float snappedOffsetDistance = float.PositiveInfinity;
float snappedOffsetAbsDistance = float.PositiveInfinity;
var deltaToOrigin = currentPosition - this.slideOrigin;
var distanceToOrigin = SnappingUtility.WorldPointToDistance(deltaToOrigin, this.slideDirection);
var quantized_min_extents = float.PositiveInfinity;
var quantized_max_extents = float.PositiveInfinity;
var snappedExtents = Extents1D.empty;
if (boundsActive)
{
(float abs_distance, float snappedOffset, float quantized_min, float quantized_max) = Snapping.SnapBounds(this.slideExtents + distanceToOrigin, this.snappingStep);
quantized_min_extents = quantized_min;
quantized_max_extents = quantized_max;
snappedExtents.min = this.slideExtents.min + distanceToOrigin + Mathf.Abs(quantized_min_extents);
snappedExtents.max = this.slideExtents.min + distanceToOrigin + Mathf.Abs(quantized_max_extents);
if (snappedOffsetAbsDistance > abs_distance)
{
snappedOffsetAbsDistance = abs_distance; snappedOffsetDistance = snappedOffset;
}
}
var quantized_pivot = float.PositiveInfinity;
if (pivotActive)
{
(float abs_distance, float snappedOffset, float quantized) = Snapping.SnapPoint(this.startOffset + distanceToOrigin, this.snappingStep);
quantized_pivot = quantized;
if (snappedOffsetAbsDistance > abs_distance)
{
snappedOffsetAbsDistance = abs_distance; snappedOffsetDistance = snappedOffset;
}
}
if (haveCustomSnapping)
{
(float abs_distance, float snappedOffset) = Snapping.SnapCustom(s_CustomSnapPoints, this.startOffset + distanceToOrigin, this.slideDirection, minPointSnap, s_CustomDistances);
if (snappedOffsetAbsDistance > abs_distance)
{
snappedOffsetAbsDistance = abs_distance; snappedOffsetDistance = snappedOffset;
}
}
// If we didn't actually snap, just return the actual unsnapped position
if (float.IsInfinity(snappedOffsetDistance))
{
return(currentPosition);
}
// Snap against drag start position
if (Mathf.Abs(snappedOffsetDistance) > Mathf.Abs(distanceToOrigin))
{
snappedOffsetDistance = distanceToOrigin;
}
var quantizedDistance = SnappingUtility.Quantize(snappedOffsetDistance);
// Figure out what kind of snapping visualization to show, this needs to be done afterwards since
// while we're snapping each type of snap can override the next one.
// Yet at the same time it's possible to snap with multiple snap-types at the same time.
if (boundsActive)
{
if (quantizedDistance == quantized_min_extents)
{
this.snapResult |= SnapResult1D.Min;
}
if (quantizedDistance == quantized_max_extents)
{
this.snapResult |= SnapResult1D.Max;
}
min = this.slideOrigin + SnappingUtility.DistanceToWorldPoint(snappedExtents.min, this.slideDirection);
max = this.slideOrigin + SnappingUtility.DistanceToWorldPoint(snappedExtents.max, this.slideDirection);
}
if (pivotActive)
{
if (quantizedDistance == quantized_pivot)
{
this.snapResult |= SnapResult1D.Pivot;
}
}
if (haveCustomSnapping)
{
Snapping.SendCustomSnappedEvents(quantizedDistance, s_CustomDistances, 0);
}
// Calculate the new position based on the snapped offset
var newOffset = distanceToOrigin - snappedOffsetDistance;
var snappedDistance = SnappingUtility.DistanceToWorldPoint(newOffset, this.slideDirection);
var snappedPosition = (snappedDistance + this.slideOrigin);
return(snappedPosition);
}
public Vector3 SnapExtents3D(Extents3D extentsInGridSpace, Vector3 worldCurrentPosition, Vector3 worldStartPosition, Grid worldSlideGrid, out SnapResult3D snapResult, Axes enabledAxes = Axes.XYZ, bool ignoreStartPoint = false)
{
s_CustomSnapPoints.Clear();
// TODO: have a method that handles multiple dimensions at the same time
var haveCustomSnapping = Snapping.GetCustomSnappingPoints(worldStartPosition, worldCurrentPosition, worldSlideGrid, 0, s_CustomSnapPoints);
var boundsActive = Snapping.BoundsSnappingActive;
var pivotActive = Snapping.PivotSnappingActive;
snapResult = SnapResult3D.None;
if (!boundsActive && !pivotActive && !haveCustomSnapping)
{
return(worldCurrentPosition);
}
const float kMinPointSnap = 0.25f;
float minPointSnap = !(boundsActive || pivotActive) ? kMinPointSnap : float.PositiveInfinity;
var offsetInWorldSpace = worldCurrentPosition - worldStartPosition;
var offsetInGridSpace = _worldToGridSpace.MultiplyVector(offsetInWorldSpace);
var pivotInGridSpace = _worldToGridSpace.MultiplyVector(worldCurrentPosition - Center);
// Snap our extents in grid space
var movedExtentsInGridspace = extentsInGridSpace + offsetInGridSpace;
var snappedOffset = Vector3.zero;
var absSnappedOffset = new Vector3(float.PositiveInfinity, float.PositiveInfinity, float.PositiveInfinity);
var enabledAxisLookup = new[] { (enabledAxes & Axes.X) > 0, (enabledAxes & Axes.Y) > 0, (enabledAxes & Axes.Z) > 0 };
var quantized_pivot = new Vector3(float.PositiveInfinity, float.PositiveInfinity, float.PositiveInfinity);
var quantized_min_extents = new Vector3(float.PositiveInfinity, float.PositiveInfinity, float.PositiveInfinity);
var quantized_max_extents = new Vector3(float.PositiveInfinity, float.PositiveInfinity, float.PositiveInfinity);
for (int i = 0; i < 3; i++)
{
if (!enabledAxisLookup[i])
{
continue;
}
if (pivotActive)
{
(float abs_pivot_offset, float snappedPivot, float quantized_offset) = Snapping.SnapPoint(pivotInGridSpace[i], _spacing[i]);
quantized_pivot[i] = quantized_offset;
if (absSnappedOffset[i] > abs_pivot_offset)
{
absSnappedOffset[i] = abs_pivot_offset; snappedOffset[i] = snappedPivot;
}
}
if (boundsActive)
{
(float abs_bounds_distance, float snappedBoundsOffset, float quantized_min, float quantized_max) = Snapping.SnapBounds(movedExtentsInGridspace[i], _spacing[i]);
quantized_min_extents[i] = quantized_min;
quantized_max_extents[i] = quantized_max;
if (absSnappedOffset[i] > abs_bounds_distance)
{
absSnappedOffset[i] = abs_bounds_distance; snappedOffset[i] = snappedBoundsOffset;
}
}
}
if (haveCustomSnapping)
{
(Vector3 abs_distance, Vector3 snappedCustomOffset) = Snapping.SnapCustom(s_CustomSnapPoints, pivotInGridSpace, enabledAxes, minPointSnap, s_CustomDistances);
if (absSnappedOffset.sqrMagnitude > abs_distance.sqrMagnitude)
{
absSnappedOffset = abs_distance; snappedOffset = snappedCustomOffset;
}
}
// Snap against drag start position
if (!ignoreStartPoint)
{
if (Mathf.Abs(snappedOffset.x) > Mathf.Abs(offsetInGridSpace.x))
{
offsetInGridSpace.x = snappedOffset.x = 0;
}
if (Mathf.Abs(snappedOffset.y) > Mathf.Abs(offsetInGridSpace.y))
{
offsetInGridSpace.y = snappedOffset.y = 0;
}
if (Mathf.Abs(snappedOffset.z) > Mathf.Abs(offsetInGridSpace.z))
{
offsetInGridSpace.z = snappedOffset.z = 0;
}
}
var quantizedOffset = new Vector3(SnappingUtility.Quantize(snappedOffset.x),
SnappingUtility.Quantize(snappedOffset.y),
SnappingUtility.Quantize(snappedOffset.z));
// Figure out what kind of snapping visualization to show, this needs to be done afterwards since
// while we're snapping each type of snap can override the next one.
// Yet at the same time it's possible to snap with multiple snap-types at the same time.
if (boundsActive)
{
if (quantized_min_extents.x == quantizedOffset.x)
{
snapResult |= SnapResult3D.MinX;
}
if (quantized_max_extents.x == quantizedOffset.x)
{
snapResult |= SnapResult3D.MaxX;
}
if (quantized_min_extents.y == quantizedOffset.y)
{
snapResult |= SnapResult3D.MinY;
}
if (quantized_max_extents.y == quantizedOffset.y)
{
snapResult |= SnapResult3D.MaxY;
}
if (quantized_min_extents.z == quantizedOffset.z)
{
snapResult |= SnapResult3D.MinZ;
}
if (quantized_max_extents.z == quantizedOffset.z)
{
snapResult |= SnapResult3D.MaxZ;
}
}
if (pivotActive)
{
if (quantized_pivot.x == quantizedOffset.x)
{
snapResult |= SnapResult3D.PivotX;
}
if (quantized_pivot.y == quantizedOffset.y)
{
snapResult |= SnapResult3D.PivotY;
}
if (quantized_pivot.z == quantizedOffset.z)
{
snapResult |= SnapResult3D.PivotZ;
}
}
if (haveCustomSnapping)
{
Snapping.SendCustomSnappedEvents(quantizedOffset, s_CustomDistances, 0);
}
if (absSnappedOffset.x == 0 &&
absSnappedOffset.y == 0 &&
absSnappedOffset.z == 0)
{
return(worldStartPosition);
}
var snappedOffsetInWorldSpace = _gridToWorldSpace.MultiplyVector(offsetInGridSpace - snappedOffset);
var snappedPositionInWorldSpace = (worldStartPosition + snappedOffsetInWorldSpace);
//Debug.Log($"{(float3)snappedOffsetInWorldSpace} {(float3)snappedOffset} {(float3)snappedPositionInWorldSpace}");
return(snappedPositionInWorldSpace);
}