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occt/tests/bugs/modalg_2/bug21909
apl 197ac94e72 0024413: Visualization - get rid of projection shift from orthographic camera definition
From now on, the panning behavior of V3d_View completely corresponds to equal operations with camera. There is no more confusing "Center" property and "ProjectionShift" which were used to introduce composite panning, while respecting view referential points: At, Eye unchanged. The V3d_View::FitAll approach has been rewritten to do "fit all" geometrically, operating with frustum, to make it working for both orthographic and perspective projections.

1) Getting rid of ProjectionShift and Center property:
- Removed ProjectionShift property of Graphic3d_Camera.
- Removed confusing Center property of V3d_View (related to projection shift).
- Removed redundant code related to the Center property of V3d_View.
- Removed WindowLimit method of Graphic3d_Camera - no more used.

2) Improvements of fit all and selector:
- Improved FitAll operation of V3d_View and reused it in NIS_View - the perspective projection is now handled correctly.
- Revised code of Select3D_Projector class - can be defined with any given projection and model-view matrices.
- Modified StdSelect_ViewerSelector3d and ensured that panning, zooming and going into the view do not lead to unwanted re-projection of sensitives. The handling of perspective selection is revised.
- Take into account graphical boundaries of infinite structure on ZFitAll.

3) Improvements of camera:
- Introduced new z range scale parameter for V3d_View::AutoZFit. See, V3d_View::AutoZFitMode.
- Allow negative ZNear, ZFar for orthographic camera to avoid clipping of viewed model.
- Moved camera ZNear, ZFar validity checks to V3d_View level.
- Use more meaningful Standard_ShortReal relative precision for ZNear, ZFar ranges computed by ZFitAll.
- Use Standard_Real type for camera projection and orientation matrices.
- Extended camera to generate both Standard_Real and Standard_ShortReal transformation matrices using the same matrix evaluation methods and converted input parameters.

Correcting picking tests for perspective view

Modify v3d face test cases for 1px changes in face picking

Modified test cases for new arguments of vviewparams DRAWEXE command
2014-03-06 15:50:33 +04:00

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pload QAcommands
puts "============"
puts "OCC21909"
puts "============"
puts ""
#######################################################################
# The surface is visualized with rendering errors
#######################################################################
set BugNumber OCC21909
# Data
set scale 57.547428234801195
set proj_X -0.25567048788070679
set proj_Y -0.92769843339920044
set proj_Z 0.27204453945159912
set up_X 0.43156850337982178
set up_Y 0.14228194952011108
set up_Z 0.89078855514526367
set at_X 16.2722331487924
set at_Y -19.463212261103
set at_Z -16.4505465814645
set x1 190
set y1 216
set y2 228
#
restore [locate_data_file OCC21909-render_error.brep] result
vinit
vdisplay result
vfit
vsetdispmode 1
vfit
vviewparams -scale ${scale} -proj ${proj_X} ${proj_Y} ${proj_Z} -up ${up_X} ${up_Y} ${up_Z} -at ${at_X} ${at_Y} ${at_Z}
vmoveto ${x1} ${y1}
vmoveto ${x1} ${y1}
set status 0
for {set i ${y1} } {$i <= ${y2} } {incr i} {
set Color1 [QAGetPixelColor ${x1} ${i}]
set R1 [lindex ${Color1} 2]
set G1 [lindex ${Color1} 5]
set B1 [lindex ${Color1} 8]
puts "x = ${x1} y = ${i} R = ${R1} G = ${G1} B = ${B1}"
if { ${R1} == 0 && ${G1} == 0 && ${B1} == 0 } {
incr status
puts "Error : rendering x = ${x1} y = ${i}"
}
}
if { ${status} != 0 } {
puts "Faulty ${BugNumber}"
} else {
puts "OK ${BugNumber}"
}
set 3dviewer 0