Contains constant values and enumerations used throughout the Spine runtime. The SpineConstant class provides access to various enumeration values used by the Spine runtime system in Godot. These constants are used to configure animation mixing, bone inheritance, path constraints, blend modes, and physics settings. Transitions between the setup and timeline values (the current value is not used). Before the first frame, the setup value is used. MixBlend_Setup is intended to transition to or from the setup pose, not for animations layered on top of others. Transitions between the current and timeline values. Before the first frame, transitions between the current and setup values. Timelines which perform instant transitions, such as DrawOrderTimeline or AttachmentTimeline, use the setup value before the first frame. MixBlend_First is intended for the first animations applied, not for animations layered on top of others. Transitions between the current and timeline values. No change is made before the first frame. MixBlend_Replace is intended for animations layered on top of others, not for the first animations applied. Transitions between the current value and the current plus timeline values. No change is made before the first frame. MixBlend_Add is intended for animations layered on top of others, not for the first animations applied. Properties set by additive animations must be set manually or by another animation before applying the additive animations, else the property values will increase each time the additive animations are applied. Spine animation mix direction for mixing in. Spine animation mix direction for mixing out. Timeline property for rotation. Timeline property for X position. Timeline property for Y position. Timeline property for X scale. Timeline property for Y scale. Timeline property for X shear. Timeline property for Y shear. Timeline property for RGB color. Timeline property for alpha transparency. Timeline property for second RGB color (for two-color tinting). Timeline property for attachment changes. Timeline property for mesh deformation. Timeline property for events. Timeline property for draw order changes. Timeline property for IK constraint. Timeline property for transform constraint. Timeline property for path constraint position. Timeline property for path constraint spacing. Timeline property for path constraint mix. Timeline property for sequence. Normal transform inheritance from parent bone. Inherits only translation from parent bone. Inherits transform except rotation and reflection. Inherits transform except scale. Inherits transform except scale and reflection. Path constraint position mode using fixed values. Path constraint position mode using percentage of path length. Path constraint spacing based on fixed length. Path constraint spacing with fixed number of bones. Path constraint spacing as percentage of path length. Path constraint rotation follows the path tangent. Path constraint rotation chains bones together. Path constraint rotation chains bones together with scale. Normal alpha blending. Additive blending. Multiply blending. Screen blending. Update during the process step. Update during the physics step. Manual update mode, updates must be triggered explicitly. Bone follows the physics simulation. Bone drives the physics simulation. Physics are not updated or applied. Physics are reset to the current pose. Physics are updated and the pose from physics is applied. Physics are not updated but the pose from physics is applied.