sbcylinderplaneprojector(3) [debian man page]
SbCylinderPlaneProjector(3) Coin SbCylinderPlaneProjector(3) NAME
SbCylinderPlaneProjector - The SbCylinderPlaneProjector class projects 2D points to a half-cylinder and a plane. This projector uses a plane along with the half-cylinder of SbCylinderSectionProjector for projections. If the 2D point mapping 'misses' the cylinder section, the 3D point will be projected onto the plane. SYNOPSIS
#include <Inventor/projectors/SbCylinderPlaneProjector.h> Inherits SbCylinderSectionProjector. Public Member Functions SbCylinderPlaneProjector (const float edgetol=0.9f, const SbBool orienttoeye=TRUE) SbCylinderPlaneProjector (const SbCylinder &cyl, const float edgetol=0.9f, const SbBool orienttoeye=TRUE) virtual SbProjector * copy (void) const virtual SbVec3f project (const SbVec2f &point) virtual SbRotation getRotation (const SbVec3f &point1, const SbVec3f &point2) Protected Member Functions SbRotation getRotation (const SbVec3f &point1, const SbBool tol1, const SbVec3f &point2, const SbBool tol2) Additional Inherited Members Detailed Description The SbCylinderPlaneProjector class projects 2D points to a half-cylinder and a plane. This projector uses a plane along with the half-cylinder of SbCylinderSectionProjector for projections. If the 2D point mapping 'misses' the cylinder section, the 3D point will be projected onto the plane. See also: SbSpherePlaneProjector Constructor &; Destructor Documentation SbCylinderPlaneProjector::SbCylinderPlaneProjector (const floatedgetol = 0.9f, const SbBoolorienttoeye = TRUE) Default constructor. See SbCylinderSectionProjector::SbCylinderSectionProjector(). SbCylinderPlaneProjector::SbCylinderPlaneProjector (const SbCylinder &cyl, const floatedgetol = 0.9f, const SbBoolorienttoeye = TRUE) Constructor with explicit specification of projection cylinder. Member Function Documentation SbProjector * SbCylinderPlaneProjector::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. Reimplemented from SbCylinderSectionProjector. SbVec3f SbCylinderPlaneProjector::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. Reimplemented from SbCylinderSectionProjector. SbRotation SbCylinderPlaneProjector::getRotation (const SbVec3f &point1, const SbVec3f &point2) [virtual] Returns rotation on the projection surface which re-orients point1 to point2. Reimplemented from SbCylinderSectionProjector. SbRotation SbCylinderPlaneProjector::getRotation (const SbVec3f &point1, const SbBooltol1, const SbVec3f &point2, const SbBooltol2) [protected] Calculates rotation from point1 to point2, with tol1 and tol2 deciding whether or not to use the tolerance setting. Author Generated automatically by Doxygen for Coin from the source code. Version 3.1.3 Wed May 23 2012 SbCylinderPlaneProjector(3)
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SbSphereSheetProjector(3) Coin SbSphereSheetProjector(3) NAME
SbSphereSheetProjector - The 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: SYNOPSIS
#include <Inventor/projectors/SbSphereSheetProjector.h> Inherits SbSphereProjector. Public Member Functions SbSphereSheetProjector (const SbBool orienttoeye=TRUE) SbSphereSheetProjector (const SbSphere &sph, const SbBool orienttoeye=TRUE) virtual SbProjector * copy (void) const virtual SbVec3f project (const SbVec2f &point) virtual SbRotation getRotation (const SbVec3f &point1, const SbVec3f &point2) Protected Member Functions void setupPlane (void) Protected Attributes SbVec3f workingProjPoint SbVec3f planePoint SbVec3f planeDir float planeDist SbPlane tolPlane Detailed Description The 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 ascii0 'Separator {0 ' Coordinate3 {0 ' point [0); 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,0, v[0], v[1], v[2]); } } (void)fprintf(stdout, ' ]0 ' }0 ' DrawStyle { pointSize 2 }0 ' PointSet { }0 '}0); return 0; } The projections to 3D points in the resulting Inventor-file looks like this: Constructor &; Destructor Documentation SbSphereSheetProjector::SbSphereSheetProjector (const SbBoolorienttoeye = TRUE) Constructor. Uses default sphere defintion, see SbSphereProjector::SbSphereProjector(). orienttoeye decides whether or not the sheet should always be oriented towards the viewer. SbSphereSheetProjector::SbSphereSheetProjector (const SbSphere &sph, const SbBoolorienttoeye = TRUE) 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. 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. SbRotation SbSphereSheetProjector::getRotation (const SbVec3f &point1, const SbVec3f &point2) [virtual] Returns rotation on the projection surface which re-orients point1 to point2. Implements SbSphereProjector. void SbSphereSheetProjector::setupPlane (void) [protected] Recalculates projection surface settings after changes to the parameters. Member Data Documentation SbSphereSheetProjector::workingProjPoint [protected] Last projected point, in the working space coordinate system. SbSphereSheetProjector::planePoint [protected] Position of the center of the sphere in the plane of the hyberbolic sheet. SbSphereSheetProjector::planeDir [protected] Normal vector of the plane defining the orientation of the sheet. 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. SbSphereSheetProjector::tolPlane [protected] The tolerance value specifying how much of the sphere is 'above' the sheet. Author Generated automatically by Doxygen for Coin from the source code. Version 3.1.3 Wed May 23 2012 SbSphereSheetProjector(3)