visual3d:documentation:modeling:segments:modify_segment_coordinate_system
Differences
This shows you the differences between two versions of the page.
| Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
| visual3d:documentation:modeling:segments:modify_segment_coordinate_system [2024/06/18 13:29] – sgranger | visual3d:documentation:modeling:segments:modify_segment_coordinate_system [2024/07/17 15:45] (current) – created sgranger | ||
|---|---|---|---|
| Line 1: | Line 1: | ||
| + | ====== Modify Segment Coordinate System ====== | ||
| + | |||
| The segment coordinate system for all Visual3D segments are defined consistently. When a segment is created in Visual3D the default segment coordinate system is consistent with the [[Visual3D: | The segment coordinate system for all Visual3D segments are defined consistently. When a segment is created in Visual3D the default segment coordinate system is consistent with the [[Visual3D: | ||
| - | {{SegmentCoordinateSytems.gif}}\\ | + | {{:SegmentCoordinateSytems.gif}}\\ |
| For example, the following laboratory coordinate system will result in the following default segment coordinate system. | For example, the following laboratory coordinate system will result in the following default segment coordinate system. | ||
| - | {{LaboratoryCoordinateSystemDialog.png}}\\ | + | {{:LaboratoryCoordinateSystemDialog.png}}\\ |
| - | {{SegmentCoordinateSystemDialog.jpg}}\\ | + | {{:SegmentCoordinateSystemDialog.jpg}}\\ |
| Line 16: | Line 18: | ||
| This is one of the consequences of the fact that the hands and the feet are considered distal segments; somewhere in the body two proximal ends must meet (e.g. often this is between the pelvis and the thorax/ab segment). To work around this so Visual3D can create a " | This is one of the consequences of the fact that the hands and the feet are considered distal segments; somewhere in the body two proximal ends must meet (e.g. often this is between the pelvis and the thorax/ab segment). To work around this so Visual3D can create a " | ||
| - | {{thoraxSCSdown.jpg}}\\ | + | {{:thoraxSCSdown.jpg}}\\ |
| If you compute a segment angle of the thorax/ab segment relative to the lab (or virtual lab), you will get a rotation of 180 degrees about the x-axis because of the inconsistent definitions. It is usually easier to interpret the joint/ | If you compute a segment angle of the thorax/ab segment relative to the lab (or virtual lab), you will get a rotation of 180 degrees about the x-axis because of the inconsistent definitions. It is usually easier to interpret the joint/ | ||
| - | ===== Modify Segment Coordinate System | + | ==== Modify Segment Coordinate System ==== |
| After the segment has been created, switch to the //Segment Properties'// | After the segment has been created, switch to the //Segment Properties'// | ||
| Line 33: | Line 35: | ||
| **Note that Visual3D will only let you create a Right Hand Coordinate system.** | **Note that Visual3D will only let you create a Right Hand Coordinate system.** | ||
| - | {{thoraxSCS.jpg}}\\ | + | {{:thoraxSCS.jpg}}\\ |
| change the selections as follows: | change the selections as follows: | ||
| - | {{thoraxSCSmodified.jpg}}\\ | + | {{:thoraxSCSmodified.jpg}}\\ |
| The resulting segment coordinate system is now pointing up | The resulting segment coordinate system is now pointing up | ||
| - | {{thoraxSCSup.jpg}}\\ | + | {{:thoraxSCSup.jpg}}\\ |
visual3d/documentation/modeling/segments/modify_segment_coordinate_system.1718717353.txt.gz · Last modified: 2024/06/18 13:29 by sgranger