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--- democap:motiontransferautohuman [2025/03/23 11:53] – dragonlord
+++ democap:motiontransferautohuman [2025/08/19 12:57] (current) – dragonlord
@@ Line 57: / Line 57: @@
 This further refines the IK calculation for legs. Instead of using just the base IK move this move blends between legs in base IK pose and legs in fully crouched pose. This move can have as many frames as required. The altitude of the hip above the ground is used to blend between the first animation frame (0s) and the last animation frame (move play time).
+====== Neck Bend X Move ======
+Move to use from character animation file as looking up-down pose.
+If used this replaces the automatic rotation applied by the motion transfer with blending between frames of this animation move. See [[preparecharacter#looking_up-down|Prepare Character for Motion Capture: Looking Up-Down]] for information on how to craft this animation.
+====== Neck Bend Y Move ======
+Move to use from character animation file as looking left-right pose.
+If used this replaces the automatic rotation applied by the motion transfer with blending between frames of this animation move. See [[preparecharacter#looking_up-down|Prepare Character for Motion Capture: Looking Up-Down]] for information on how to craft this animation. Simply use looking left instead of looking down and looking right instead of looking up.
+====== Neck Shift X Move ======
+Move to use from character animation file as shifting head forward-backward pose.
+Providing this animation is required to transfer actor head shifting to the character. The motion transfer the head shifting with blending between frames of this animation move. See [[preparecharacter#shift_head_forward-backward|Prepare Character for Motion Capture: Shift Head Forward-Backward]] for information on how to craft this animation.
+====== Neck Shift Y Move ======
+Move to use from character animation file as shifting head left-right pose.
+Providing this animation is required to transfer actor head shifting to the character. The motion transfer the head shifting with blending between frames of this animation move. See [[preparecharacter#shift_head_forward-backward|Prepare Character for Motion Capture: Shift Head Forward-Backward]] for information on how to craft this animation. Simply use shifting left instead of shifting forward and shifting right instead of shifting backward.
+Using this animation can be tricky due to limitations of chest trackers. No matter if attached to the chest or the back these trackers show tendency to rotate and tilt if the actor moves the shoulder for example by raising his hands. This tends to cause head left-right shifting although the actor is not moving the head. Use this animation move only if you can attach the chest/back tracker in a way it is not affected by shoulder movement.
 ====== Fine Tuning ======
@@ Line 87: / Line 113: @@
 For human actors a good default value is 13. This bends slightly stronger the upper half of the spine.
+===== Neck Bend Move Range =====
+Defines the range of actor head movement to be mapped to the ''Neck Bend X Move'' and ''Neck Bend Y Move'' if used.
+The X coordinate indicates the looking up-down angle limit in degrees. The Y coordinate indicates the looking left-right angle limit in degrees.
+The default limits are 60 degrees for looking up-down and 45 for looking left-right. Adjust these ranges if the actor can (or wants to) rotate his head farther or less strongly than this.
+===== Neck Shift Move Range =====
+Defines the range of actor head shifting to be mapped to the ''Neck Shift X Move'' and ''Neck Shift Y Move'' if used.
+The X coordinate indicates the shifting forward-backward angle limit in degrees. The Y coordinate indicates the shifting left-right angle limit in degrees. The shifting is measured in degrees not meters since this is more stable.
+The default limits are 20 degrees for shifting forward-backward and 12 for shifting left-right. Adjust these ranges if the actor can (or wants to) shift his head farther or less strongly than this.
 ===== Reach Scaling RA =====
@@ Line 151: / Line 193: @@
 Bend Axis affects only the bending of the bone chain. It does not affect the bending angle calculation. This allows to calculate the bending for one direction while applying it to a bone chain pointing into another direction.
-===== Relocate Arms =====
-If checked the actor hand and elbow trackers position is relocated relative to the chest. This has to be used for characters with horizontal bodies like dinosaurs where the chest area is located from the waist forward instead of upwards. Using spine bend axis can work in such situations but relocating is usually better and allows the camera to still be attached to the character head.
-<WRAP clear></WRAP>
-===== Pull feet to ground =====
-Ensures feet touch the ground. If the legs would over-stretch to reach the feet character slot the waist character slot (and slots above it) are pulled towards the respective foot to prevent the leg from over-stretching. Especially if both feet need to be fixes a small offset can result. To compensate for this a small over-stretch of the legs is applied if the leg construction of the character allows this. For beast type characters with bend legs this works best since their legs usually are not fully stretched and thus provide wiggle room. Human characters need to slightly tip-toe to compensate.
 ===== Waist Mode =====
@@ Line 177: / Line 209: @@
 The actor waist character slot and slots above are moved towards the center of the feet character slots to match the character waist. This changes the posture of the actor used for motion capturing by shortening (or enlarging) his legs to match the character. After moving the character slots the direct waist mode is used to attach the character hips to the actor hips. This mode is recommended for beast type characters since with those typically hips are further down or up compared to the actor hips. This mode is not so well used if beast type characters are captured in sitting or laying poses. In these situations it is better to use relative waist mode.
+===== Relocate Arms =====
+If checked the actor hand and elbow trackers position is relocated relative to the chest. This has to be used for characters with horizontal bodies like dinosaurs where the chest area is located from the waist forward instead of upwards. Using spine bend axis can work in such situations but relocating is usually better and allows the camera to still be attached to the character head.
+<WRAP clear></WRAP>
+===== Pull feet to ground =====
+Ensures feet touch the ground. If the legs would over-stretch to reach the feet character slot the waist character slot (and slots above it) are pulled towards the respective foot to prevent the leg from over-stretching. Especially if both feet need to be fixes a small offset can result. To compensate for this a small over-stretch of the legs is applied if the leg construction of the character allows this. For beast type characters with bend legs this works best since their legs usually are not fully stretched and thus provide wiggle room. Human characters need to slightly tip-toe to compensate.
+===== Simulate waist =====
+Enable basic simulation of waist if no device is attached to the waist slot. Derives waist location from head position relative to feet.

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