Namespace Rules Classes CustomGridGraphRuleEditorAttribute GridGraphRule Custom rule for a grid graph. GridGraphRules Container for all rules in a grid graph. IGridGraphRuleEditor Common interface for all grid graph rule editors. RuleAnglePenalty Applies penalty based on the slope of the surface below the node. RuleElevationPenalty Applies penalty based on the elevation of the node. RulePerLayerModifications Modifies nodes based on the layer of the surface under the node. RuleTexture Modifies nodes based on the contents of a texture.