Class TX3DGraphTraverseState

Lights active in this state.

May be Nil if empty. This way we optimize creation / assignment time, which happen very often with TX3DGraphTraverseState during VRML/X3D traversing.

Note that VRML >= 2.0 "global" lights are added from TCastleSceneCore, not during the traverse pass.

Transformation of this state. Calculated efficiently while traversing the X3D graph.

Current texture transformation. Usable only for VRML 1.0, in VRML 2.0 texture transformations don't accumulate like modelview transformations.

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Information if you're within any inline node or expanded prototype. InsideInline = 0 means you're not inside any inline node, 1 means you're inside one inline, 2 means you're within content inlined from yet another inline node, and so on. Analogous for InsidePrototype.

These are measured from the node where you started TX3DNode.Traverse call, that is they assume that the initial node from where you're traversing is at level 0 (not inside inline or expanded prototype).

These are useful to establish "run-time name scope" of X3D, see X3D spec 4.4.7 (needed e.g. when handling Anchor node with "#Viewpoint" URL). Interpreting this for our implementation, specification says that if you traverse from node X, then all traversed nodes with InsideInline = InsidePrototype = 0 are within the same name scope.

Also this is useful for searching for the first bindable node after loading the file. Specification says to ignore inline content in this case (although prototype content is Ok in this case).

When scriping will be implemented, probably analogous InsideScriptCreatedNode will also be needed, as the spec says that bindable nodes should not be searched within things like "Browser.createX3DFromString()".

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This is > 0 when traversing nodes that do not participate in collision detection.

This counts how many times are we inside Collision node that prevents us from colliding. More precise, this is increased when we traverse inside Collision.children with Collision.enabled = FALSE or Collision.proxy <> NULL (since then Collision.children are not collidable).

This is > 0 when traversing nodes that are not visible.

This counts how many times are we inside Collision.proxy (with Collision.enabled = TRUE). Collision.proxy is never visible.

Active pointing device sensors in this state. This can contain only nodes descending from X3DPointingDeviceSensorNode, and additionally an Anchor node.

This list automatically honours VRML / X3D rules for what pointing device sensor is active: pointing device within some group node affects all children in this group node. (And when multiple pointing device sensors are within the same grouping node, they all work.)

For Humanoid skeleton, these contain cummulated joint transformation.

Humanoid node containing us, or Nil if none.

ClipPlanes affecting nodes within this state.

They are collected here regardless of whether they are enabled or not. This allows efficient implementation of ClipPlane.enabled dynamic changes.

Ordered from the most global to most local ones. So, following the X3D specification, we should consider the first clip planes on this list more important.

Always Nil if empty. This allows us to optimize TX3DGraphTraverseState processing.

Local fog settings. When Nil, it means use global fog (or no fog, if no global fog defined in file).

Effects (TEffectNode) affecting this state.

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Copy transformation-related fields from Source. Copies Transformation. Copies also the ClipPlanes list, as it contains the transformation information.

Warning: this symbol is deprecated: use Transformation.Transform

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Warning: this symbol is deprecated: use Transformation.InverseTransform

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Standard constructor. Uses global VRML1DefaultState as default nodes for VRML1State. This makes it fast, and improves cache (more nodes have equal reference).

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Clear the whole state, just like this TX3DGraphTraverseState instance would be just constructed.

Compare with other TX3DGraphTraverseState instance. True if these two states, when applied to the same geometry, result in the same TGeometryArrays output. If IgnoreTransform then we should ignore transformation during comparison (it means that renderer is absolutely sure that different transformation of geometry doesn't affect the generated arrays).

Primary texture that determines RGB color and opacity. See TAppearanceNode.MainTexture for definition.

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Returns BlendMode for this state, or Nil if not present.

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Material information at this state. See TMaterialInfo for usage description. Returns Nil when no node determines material properties (which indicates white unlit look).

Returned TMaterialInfo is valid only as long as the underlying Material or CommonSurfaceShader node exists. Do not free it yourself, it will be automatically freed.

Nodes that affect how following nodes are rendered, mostly for VRML 1.0 state.

Warning: this symbol is deprecated: use VRML1State

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