🔹 VisualTreeHelper Class
namespace Noesis | MSDN
Provides utility methods that perform common tasks involving nodes in a visual tree.
Properties
VisualTreeHelper has no properties
Attached Properties
VisualTreeHelper has no attached properties
Methods
| Name | Description |
|---|---|
| ◆ GetChild(const Visual*, uint32_t) | Returns the child visual object of a parent at the specified index |
| ◆ GetChildrenCount(const Visual*) | Returns the number of children that a parent visual contains |
| ◆ GetClip(const Visual*) | Returns the clip geometry of the visual |
| ◆ GetContentBounds(const Visual*) | Returns the cached bounding box rectangle for the visual |
| ◆ GetDescendantBounds(const Visual*) | Returns the union of all the content bounding boxes for all visual object descendants, which includes the content bounding box of the visual itself |
| ◆ GetDescendantBoundsMaxZ(const Visual*) | Returns the maximum z value of the union of all the content bounding boxes for all visual object descendants, which includes the content bounding box of the visual itself |
| ◆ GetDescendantBoundsMinZ(const Visual*) | Returns the minimum z value of the union of all the content bounding boxes for all visual object descendants, which includes the content bounding box of the visual itself |
| ◆ GetOffset(const Visual*) | Returns the offset of the visual |
| ◆ GetParent(const Visual*) | Returns the parent of the visual object |
| ◆ GetRoot(const Visual*) | Returns the root of the visual tree where the specified visual is connected to |
| ◆ GetSize(const Visual*) | Returns the size of the visual |
| ◆ HitTest(Visual*, const Point&) | Returns the top-most visual object of a hit test. The coordinate value you pass as the point parameter has to be relative to the coordinate space of the visual object |
| ◆ HitTest(Visual*, const Point&, Noesis::HitTestFilterCallback, Noesis::HitTestResultCallback) | Returns the top-most visual object of a hit test. The coordinate value you pass as the point parameter has to be relative to the coordinate space of the visual object. The specified callback will be called each time a visual is hit while traversing the tree |
| ◆ HitTest3D(Visual*, const Point3D&, const Point3D&) | Returns the top-most visual object of a hit test. The coordinate values you pass as the point and direction parameters have to be relative to the coordinate space of the visual object |
| ◆ HitTest3D(Visual*, const Point3D&, const Point3D&, Noesis::HitTestFilterCallback, Noesis::HitTest3DResultCallback) | Returns the top-most visual object of a hit test. The coordinate values you pass as the point and direction parameters have to be relative to the coordinate space of the visual object. The specified callback will be called each time a visual is hit while traversing the tree |
| ◆ IntersectPlane(Visual*, const Point3D&, const Point3D&, Point3D&) | Returns the intersection of the given ray with the plane corresponding to the passed visual Input and output coordinates are expressed in world-space False is returned if there is no intersection |
Events
VisualTreeHelper has no events
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