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// File Visual3d_ViewMapping.cxx
// Created Fevrier 1992
// Author NW,JPB,CAL
// Modified
// 22-12-98 : FMN ; Rename CSF_WALKTHROW en CSF_WALKTHROUGH
// 23-07-07 : NKV ; Define custom PROJECTION matrix for OpenGl context
//-Copyright MatraDatavision 1991,1992
//-Version
//-Design Declaration of variables specific to mapping of views
//-Warning Mapping of a view is defined by :
// - reference point of projection
// - type of projection
// - distance for the Back Plane
// - distance for the Front Plane
// - distance for the Projection Plane
//-References
//-Language C++ 2.0
//-Declarations
// for the class
#include <Visual3d_ViewMapping.ixx>
#include <Precision.hxx>
// Perspective
#include <OSD_Environment.hxx>
static OSD_Environment env_walkthrow;
static Standard_Boolean Visual3dWalkthrow()
{
static Standard_Integer isWalkthrow( -1 );
if ( isWalkthrow < 0 ) {
isWalkthrow = 1;
OSD_Environment WalkThrow("CSF_WALKTHROUGH");
if ( WalkThrow.Value().IsEmpty() )
isWalkthrow = 0;
}
return ( isWalkthrow != 0 );
}
//-Aliases
//-Global data definitions
// -- le point reference de projection
// MyReferencePoint : Vertex;
// -- le type de projection
// MyProjectionType : TypeOfProjection;
// -- la distance pour le Back Plane
// MyBackPlaneDistance : Standard_Real;
// -- la distance pour le Front Plane
// MyFrontPlaneDistance : Standard_Real;
// -- la distance pour le Projection Plane
// MyViewPlaneDistance : Standard_Real;
// -- les limites de la partie visible du plan
// -- MyWindowLimits[0] = u du coin inferieur gauche.
// -- MyWindowLimits[1] = v du coin inferieur gauche.
// -- MyWindowLimits[2] = u du coin superieur droit.
// -- MyWindowLimits[3] = v du coin superieur droit.
// MyWindowLimits : Standard_Real[4];
//-Constructors
//-Destructors
//-Methods, in order
Visual3d_ViewMapping::Visual3d_ViewMapping ():
MyReferencePoint (0.5, 0.5, 2.0),
MyProjectionType (Visual3d_TOP_PARALLEL) {
if ( Visual3dWalkthrow() )
{
MyBackPlaneDistance = -1.0;
MyFrontPlaneDistance = 1.0;
MyViewPlaneDistance = 0.0;
}
else
{
MyBackPlaneDistance = 0.0;
MyFrontPlaneDistance = 1.0;
MyViewPlaneDistance = 1.0;
}
MyWindowLimits[0] = 0.0;
MyWindowLimits[1] = 0.0;
MyWindowLimits[2] = 1.0;
MyWindowLimits[3] = 1.0;
}
Visual3d_ViewMapping::Visual3d_ViewMapping (const Visual3d_TypeOfProjection AType, const Graphic3d_Vertex& PRP, const Standard_Real BPD, const Standard_Real FPD, const Standard_Real VPD, const Standard_Real WUmin, const Standard_Real WVmin, const Standard_Real WUmax, const Standard_Real WVmax):
MyReferencePoint (PRP),
MyProjectionType (AType),
MyBackPlaneDistance (BPD),
MyFrontPlaneDistance (FPD),
MyViewPlaneDistance (VPD) {
if ( (WUmin >= WUmax) || (WVmin >= WVmax) )
Visual3d_ViewMappingDefinitionError::Raise
("Invalid window; WUmin > WUmax or WVmin > WVmax");
if (BPD > FPD)
Visual3d_ViewMappingDefinitionError::Raise
("The back plane is in front of the front plane");
/*
A TESTER AVEC LE VRP ?
Visual3d_ViewMappingDefinitionError::Raise
("The projection reference point is between the front and back planes");
if (PRP.Z () == VPD)
Visual3d_ViewMappingDefinitionError::Raise
("The projection reference point cannot be positioned on the view plane");
*/
MyWindowLimits[0] = WUmin;
MyWindowLimits[1] = WVmin;
MyWindowLimits[2] = WUmax;
MyWindowLimits[3] = WVmax;
}
void Visual3d_ViewMapping::SetProjection (const Visual3d_TypeOfProjection AType) {
MyProjectionType = AType;
}
Visual3d_TypeOfProjection Visual3d_ViewMapping::Projection () const {
return (MyProjectionType);
}
void Visual3d_ViewMapping::SetProjectionReferencePoint (const Graphic3d_Vertex& PRP) {
/*
Standard_Real VPD, BPD, FPD;
VPD = MyViewPlaneDistance;
BPD = MyBackPlaneDistance;
FPD = MyFrontPlaneDistance;
A TESTER AVEC LE VRP ?
Visual3d_ViewMappingDefinitionError::Raise
("The projection reference point is between the front and back planes");
if (PRP.Z () == VPD)
Visual3d_ViewMappingDefinitionError::Raise
("The projection reference point cannot be positioned on the view plane");
*/
MyReferencePoint = PRP;
}
Graphic3d_Vertex Visual3d_ViewMapping::ProjectionReferencePoint () const {
return (MyReferencePoint);
}
void Visual3d_ViewMapping::SetViewPlaneDistance (const Standard_Real VPD) {
/*
Standard_Real PRPZ, BPD, FPD;
PRPZ = MyReferencePoint.Z ();
BPD = MyBackPlaneDistance;
FPD = MyFrontPlaneDistance;
A TESTER AVEC LE VRP ?
Visual3d_ViewMappingDefinitionError::Raise
("The projection reference point is between the front and back planes");
if (PRPZ == VPD)
Visual3d_ViewMappingDefinitionError::Raise
("The projection reference point cannot be positioned on the view plane");
*/
MyViewPlaneDistance = VPD;
}
Standard_Real Visual3d_ViewMapping::ViewPlaneDistance () const {
return (MyViewPlaneDistance);
}
void Visual3d_ViewMapping::SetBackPlaneDistance (const Standard_Real BPD) {
/*
Standard_Real VPD, PRPZ, FPD;
PRPZ = MyReferencePoint.Z ();
VPD = MyViewPlaneDistance;
FPD = MyFrontPlaneDistance;
if (BPD > FPD)
Visual3d_ViewMappingDefinitionError::Raise
("The back plane is in front of the front plane");
A TESTER AVEC LE VRP ?
Visual3d_ViewMappingDefinitionError::Raise
("The projection reference point is between the front and back planes");
*/
MyBackPlaneDistance = BPD;
}
Standard_Real Visual3d_ViewMapping::BackPlaneDistance () const {
return (MyBackPlaneDistance);
}
void Visual3d_ViewMapping::SetFrontPlaneDistance (const Standard_Real FPD) {
/*
Standard_Real VPD, BPD, PRPZ;
PRPZ = MyReferencePoint.Z ();
VPD = MyViewPlaneDistance;
BPD = MyBackPlaneDistance;
if (BPD > FPD)
Visual3d_ViewMappingDefinitionError::Raise
("The back plane is in front of the front plane");
A TESTER AVEC LE VRP ?
Visual3d_ViewMappingDefinitionError::Raise
("The projection reference point is between the front and back planes");
*/
MyFrontPlaneDistance = FPD;
}
Standard_Real Visual3d_ViewMapping::FrontPlaneDistance () const {
return (MyFrontPlaneDistance);
}
void Visual3d_ViewMapping::SetWindowLimit (const Standard_Real Umin, const Standard_Real Vmin, const Standard_Real Umax, const Standard_Real Vmax) {
if ( (Umin >= Umax) || (Vmin >= Vmax) )
Visual3d_ViewMappingDefinitionError::Raise
("Invalid window; WUmin > WUmax or WVmin > WVmax");
if( (Umax - Umin) < Precision::Confusion() || (Vmax - Vmin) < Precision::Confusion())
Visual3d_ViewMappingDefinitionError::Raise
("Window is too small");
MyWindowLimits[0] = Umin;
MyWindowLimits[1] = Vmin;
MyWindowLimits[2] = Umax;
MyWindowLimits[3] = Vmax;
}
void Visual3d_ViewMapping::WindowLimit (Standard_Real& Umin, Standard_Real& Vmin, Standard_Real& Umax, Standard_Real& Vmax) const {
Umin = MyWindowLimits[0];
Vmin = MyWindowLimits[1];
Umax = MyWindowLimits[2];
Vmax = MyWindowLimits[3];
}
void Visual3d_ViewMapping::SetCustomProjectionMatrix(const Handle(TColStd_HArray2OfReal)& Mat)
{
MyProjectionMatrix = Mat;
}
Standard_Boolean Visual3d_ViewMapping::IsCustomMatrix() const
{
return !MyProjectionMatrix.IsNull()
&& MyProjectionMatrix->LowerRow() == 0
&& MyProjectionMatrix->LowerCol() == 0
&& MyProjectionMatrix->UpperRow() == 3
&& MyProjectionMatrix->UpperCol() == 3;
}
void Visual3d_ViewMapping::Assign (const Visual3d_ViewMapping& Other) {
Standard_Real X, Y, Z;
(Other.ProjectionReferencePoint ()).Coord (X, Y, Z);
MyReferencePoint.SetCoord (X, Y, Z);
MyProjectionType = Other.Projection ();
MyBackPlaneDistance = Other.BackPlaneDistance ();
MyFrontPlaneDistance = Other.FrontPlaneDistance ();
MyViewPlaneDistance = Other.ViewPlaneDistance ();
Other.WindowLimit (MyWindowLimits[0], MyWindowLimits[1],
MyWindowLimits[2], MyWindowLimits[3]);
if ( Other.IsCustomMatrix() ) {
MyProjectionMatrix = new TColStd_HArray2OfReal( 0, 3, 0, 3 );
for (Standard_Integer i = 0; i < 4; i++)
for (Standard_Integer j = 0; j < 4; j++)
MyProjectionMatrix->SetValue( i, j, Other.MyProjectionMatrix->Value(i, j) );
}
else
MyProjectionMatrix.Nullify();
}
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