SbSphereSheetProjector - Online Linux Manual PageSection : 3
Updated : Mon Jan 25 2021
Source : Version 2.5.0
Note : Coin
NAMESbSphereSheetProjector − The SbSphereSheetProjector class projects 2D points to 3D points on a sheet covering a spherical shape.
SYNOPSIS
#include <Inventor/projectors/SbSphereSheetProjector.h> Inherits SbSphereProjector.
Public Member FunctionsSbSphereSheetProjector (const SbBool orienttoeye=1)
SbSphereSheetProjector (const SbSphere &sph, const SbBool orienttoeye=1)
virtual SbProjector * copy (void) const
virtual SbVec3f project (const SbVec2f &point)
virtual SbRotation getRotation (const SbVec3f &point1, const SbVec3f &point2)
Protected Member Functionsvoid setupPlane (void)
Protected AttributesSbVec3f workingProjPoint
SbVec3f planePoint
SbVec3f planeDir
float planeDist
SbPlane tolPlane
Detailed DescriptionThe SbSphereSheetProjector class projects 2D points to 3D points on a sheet covering a spherical shape. The following stand-alone example shows how screen space coordinates projects into 3D when mapped with an SbSphereSheetProjector. It outputs the resulting projections as an SoPointSet in a Inventor-file on stdout: #include <stdio.h>
#include <Inventor/SbLinear.h>
#include <Inventor/projectors/SbSphereSheetProjector.h>
#include <Inventor/SoDB.h>
int
main(void)
{
SoDB::init();
const float START = 0.0f;
const float END = 1.0f;
const float STEPS = 50.0f;
const float STEPSIZE = ((END - START) / STEPS);
SbSphere s(SbVec3f(0, 0, 0), 0.8);
SbSphereSheetProjector ssp(s, TRUE); // last argument is orientToEye
SbViewVolume volume;
volume.ortho(-1, 1, -1, 1, -1, 1);
ssp.setViewVolume(volume);
(void)fprintf(stdout, "#Inventor V2.1 ascii\n\n"
"Separator {\n"
" Coordinate3 {\n"
" point [\n");
for (float i=START; i <= END; i += STEPSIZE) {
for (float j=START; j <= END; j += STEPSIZE) {
SbVec3f v = ssp.project(SbVec2f(j, i));
(void)fprintf(stdout, " %f %f %f,\n", v[0], v[1], v[2]);
}
}
(void)fprintf(stdout, " ]\n"
" }\n"
" DrawStyle { pointSize 2 }\n"
" PointSet { }\n"
"}\n");
return 0;
}The projections to 3D points in the resulting Inventor-file looks like this:
Constructor & Destructor Documentation
SbSphereSheetProjector::SbSphereSheetProjector (const SbBool orienttoeye = 1)Constructor. Uses default sphere defintion, see SbSphereProjector::SbSphereProjector(). orienttoeye decides whether or not the sheet should always be oriented towards the viewer. Referenced by copy().
SbSphereSheetProjector::SbSphereSheetProjector (const SbSphere & sph, const SbBool orienttoeye = 1)Constructor with explicit definition of projection sphere.
Member Function Documentation
SbProjector * SbSphereSheetProjector::copy (void) const [virtual]Construct and return a copy of this projector. The caller is responsible for destructing the new instance. Note that if the Coin library has been built as a DLL under Microsoft Windows and you use this method from application code, you must make sure that both the Coin DLL and the application executable is using the same instance of a C Run-Time (CRT) library. Otherwise, you will get memory heap corruption upon deallocating the returned instances, eventually leading to mysterious crashes.
Implements SbProjector. References SbSphereSheetProjector().
SbVec3f SbSphereSheetProjector::project (const SbVec2f & point) [virtual]Project the 2D point from normalized viewport coordinates to a 3D point. The mapping will be done in accordance with the type of the projector. Implements SbProjector. References SbLine::getDirection(), SbSphere::getRadius(), SbProjector::getWorkingLine(), SbPlane::intersect(), SbSphereProjector::intersectFront, SbSphereProjector::intersectSphereFront(), SbSphereProjector::isOrientToEye(), SbSphereProjector::lastPoint, SbSphereProjector::needSetup, SbVec3f::negate(), planeDir, planePoint, SoDebugError::postWarning(), setupPlane(), SbLine::setValue(), SbSphereProjector::sphere, tolPlane, and workingProjPoint.
SbRotation SbSphereSheetProjector::getRotation (const SbVec3f & point1, const SbVec3f & point2) [virtual]Returns rotation on the projection surface which re-orients point1 to point2. Implements SbSphereProjector. References SbSphereProjector::needSetup, planePoint, and setupPlane().
void SbSphereSheetProjector::setupPlane (void) [protected]Recalculates projection surface settings after changes to the parameters. References SbSphere::getCenter(), SbViewVolume::getProjectionDirection(), SbSphereProjector::intersectFront, SbMatrix::multDirMatrix(), SbSphereProjector::needSetup, SbVec3f::normalize(), SbSphereProjector::orientToEye, planeDir, planeDist, planePoint, SoDebugError::postWarning(), SbVec3f::setValue(), SbSphereProjector::sphere, tolPlane, SbProjector::viewVol, and SbProjector::worldToWorking. Referenced by getRotation(), and project().
Member Data Documentation
SbSphereSheetProjector::workingProjPoint [protected]Last projected point, in the working space coordinate system. Referenced by project().
SbSphereSheetProjector::planePoint [protected]Position of the center of the sphere in the plane of the hyberbolic sheet. Referenced by getRotation(), project(), and setupPlane().
SbSphereSheetProjector::planeDir [protected]Normal vector of the plane defining the orientation of the sheet. Referenced by project(), and setupPlane().
SbSphereSheetProjector::planeDist [protected]This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.
Referenced by setupPlane().
SbSphereSheetProjector::tolPlane [protected]The tolerance value specifying how much of the sphere is 'above' the sheet. Referenced by project(), and setupPlane().
AuthorGenerated automatically by Doxygen for Coin from the source code. 0
Johanes Gumabo
Data Size : 25,951 byte
man-SbSphereSheetProjector.3coin2Build : 2024-12-05, 20:55 :
Visitor Screen : x
Visitor Counter ( page / site ) : 2 / 180,841
Visitor ID : :
Visitor IP : 52.15.111.109 :
Visitor Provider : AMAZON-02 :
Provider Position ( lat x lon ) : 39.962500 x -83.006100 : x
Provider Accuracy Radius ( km ) : 1000 :
Provider City : Columbus :
Provider Province : Ohio , : ,
Provider Country : United States :
Provider Continent : North America :
Visitor Recorder : Version :
Visitor Recorder : Library :
Online Linux Manual Page : Version : Online Linux Manual Page - Fedora.40 - march=x86-64 - mtune=generic - 24.12.05
Online Linux Manual Page : Library : lib_c - 24.10.03 - march=x86-64 - mtune=generic - Fedora.40
Online Linux Manual Page : Library : lib_m - 24.10.03 - march=x86-64 - mtune=generic - Fedora.40
Data Base : Version : Online Linux Manual Page Database - 24.04.13 - march=x86-64 - mtune=generic - fedora-38
Data Base : Library : lib_c - 23.02.07 - march=x86-64 - mtune=generic - fedora.36
Very long time ago, I have the best tutor, Wenzel Svojanovsky . If someone knows the email address of Wenzel Svojanovsky , please send an email to johanes_gumabo@yahoo.co.id .
If error, please print screen and send to johanes_gumabo@yahoo.co.id
Under development. Support me via PayPal.
ERROR : Need New Coding : (rof_nr_x|149|SbSphereSheetProjector.3coin2|89|\n\n"| (void)fprintf(stdout, "#Inventor V2\&.1 ascii\n\n"
) (rof_nr_x|149|SbSphereSheetProjector.3coin2|90|\n"| "Separator {\n"
) (rof_nr_x|149|SbSphereSheetProjector.3coin2|91|\n"| " Coordinate3 {\n"
) (rof_nr_x|149|SbSphereSheetProjector.3coin2|92|\n");| " point [\n");
) (rof_nr_x|149|SbSphereSheetProjector.3coin2|97|\n", v[0], v[1], v[2]);| (void)fprintf(stdout, "\t%f %f %f,\n", v[0], v[1], v[2]);
) (rof_nr_x|149|SbSphereSheetProjector.3coin2|101|\n"| (void)fprintf(stdout, " ]\n"
) (rof_nr_x|149|SbSphereSheetProjector.3coin2|102|\n"| " }\n"
) (rof_nr_x|149|SbSphereSheetProjector.3coin2|103|\n"| " DrawStyle { pointSize 2 }\n"
) (rof_nr_x|149|SbSphereSheetProjector.3coin2|104|\n"| " PointSet { }\n"
) (rof_nr_x|149|SbSphereSheetProjector.3coin2|105|\n");| "}\n");
)