Rhino C++ API
8.13
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#include <RhinoSdkDisplayPipeline.h>
Public Attributes | |
ON_BoundingBox | bbox |
double | bbox_far |
double | bbox_near |
ON_3dPoint | camera_location |
ON_3dVector | camera_Y |
unit up vector More... | |
ON_3dVector | camera_Z |
unit vector (negative unitized direction) More... | |
double | frustum_bottom |
double | frustum_far |
double | frustum_left |
double | frustum_near |
double | frustum_right |
double | frustum_top |
double | min_near_dist |
double | min_near_over_far |
double | target_dist |
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THIS SOFTWARE IS PROVIDED "AS IS" WITHOUT EXPRESS OR IMPLIED WARRANTY. ALL IMPLIED WARRANTIES OF FITNESS FOR ANY PARTICULAR PURPOSE AND OF MERCHANTABILITY ARE HEREBY DISCLAIMED.
For complete Rhino SDK copyright information see http://www.rhino3d.com/developer.
ON_BoundingBox ClippingInfo::bbox |
CRhinoDisplayPipeline::iCalcBoundingBox sets bbox. Often it is too big, but generally contains everything core Rhino knows needs to be drawn.
double ClippingInfo::bbox_far |
double ClippingInfo::bbox_near |
You can override the virtual function CRhinoDisplayPipeline::CalcClippingPlanes() and adjust the values of m_Clipping.bbox_near m_Clipping.bbox_far If you set them incorrectly, Rhino will ignore your request. bbox_near > 0 bbox_far > bbox_near
NOTE WELL: These are INPUT values used in the calculations that set the view frustum's near and far values. Use the visible portion of objects you want to set to set bbox_near and bbox_far. Specifically, do not set bbox_near = frustum_near, or you will cause "near creep" when relative depth bias is taken into account when near clipping planes are set.
ON_3dPoint ClippingInfo::camera_location |
ON_3dVector ClippingInfo::camera_Y |
unit up vector
ON_3dVector ClippingInfo::camera_Z |
unit vector (negative unitized direction)
double ClippingInfo::frustum_bottom |
double ClippingInfo::frustum_far |
double ClippingInfo::frustum_left |
These fields report the view frustum that was set by Rhino. Unless you are doing something pretty fancy, you should ignore these values and query the actual view frustum if you want to know where it is. These values get set when core Rhino view code calculates the view frustum. None of these values are used as input to any core Rhino calculation that sets a view frustum.
double ClippingInfo::frustum_near |
double ClippingInfo::frustum_right |
double ClippingInfo::frustum_top |
double ClippingInfo::min_near_dist |
CRhinoDisplayPipeline::iCalcClippingPlanes sets min_near_dist and min_near_over_far based on video hardware capabilities. If you want high quality display, make sure your code sets near and far so that bbox_near >= min_near_dist bbox_near >= min_near_over_far*bbox_far
double ClippingInfo::min_near_over_far |
double ClippingInfo::target_dist |
Rhino sets this to be the distance from the camera to the target. It can generally be ignored. In situations where bbox_near and bbox_far are too far apart, target_dist can be used as a hint about what area of the frustum is the most important to show.