Draw a rect handle (for Rect, RectInt) or bounds handle (for Bounds, BoundsInt) to adjust corresponding values of the field.

Parameters:

• string space = "this": parent of the rect/bounds. When using this, use the current object as target space. When using null, use world space and no rotation at all. Otherwise, use the target field/callback as the parent.
• float posXOffset = 0f: local position offset at the x axis
• float posYOffset = 0f: local position offset at the y axis
• float posZOffset = 0f: local position offset at the z axis
• string posOffsetCallback = null: use a field/callback as the local position offset. Must return a Vector3.
• EColor eColor = EColor.White: color of the handle
• float alpha = 1f: color's alpha of the handle
• string color = null: use a color for the handle. If starts with #, a hex color is used. Otherwise, use the target field/callback which the value/return-value must be a Color.

using SaintsField;
[PrimitiveBoundsHandle] public Rect rect;
[PrimitiveBoundsHandle(eColor: EColor.Aqua)] public RectInt rectInt;

using SaintsField;

[PrimitiveBoundsHandle] public Bounds bounds;
[PrimitiveBoundsHandle(eColor: EColor.Aqua)] public BoundsInt boundsInt;