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0024070: OpenGL capped object-level clipping planes
Graphical clipping: - Use "Graphic3d_ClipPlane" to defined clipping for PrsMgr_PresentableObject (local clipping), for V3d_View (global clipping). Get rid of old implementations: - Remove Visual3d_ClipPlane. - Port V3d_Plane to Graphic3d_ClipPlane core. Selection Sensitives: - Port "Matches" method to add full set of arguments (SelectBasics_PickArgs), including min-max depth coming from selector. - Get rid of transient data for pair Matches -> ComputeDepth. - Extend SelectMgr_ViewerSelector::LoadResult to work with local clipping, add virtual callbacks to compute globa/local depth clipping for picking. Capping rendering algorithm: - Recursive rendering algorithm for OpenGl_Groups. - Introduced Rendering filter for groups. Clipping plane management in TKOpenGl: - Added OpenGl_ClippingState to OpenGl_Context. DRAWEXE commands: - Ported "vclipplane" command for new approach. - Added "vsettexturemode" command for changing texture details in views (enable / disable textures). Correct DownCast syntax (compilation error) Fix new compiler warnings tests/bugs/vis/bug22906 migrated to the new vclipplane syntax
This commit is contained in:
apl
bugmaster
171
src/OpenGl/OpenGl_CappingPlaneResource.cxx
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171
src/OpenGl/OpenGl_CappingPlaneResource.cxx
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// Created on: 2013-08-15
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// Created by: Anton POLETAEV
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// Copyright (c) 2013 OPEN CASCADE SAS
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//
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// The content of this file is subject to the Open CASCADE Technology Public
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// License Version 6.5 (the "License"). You may not use the content of this file
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// except in compliance with the License. Please obtain a copy of the License
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// at http://www.opencascade.org and read it completely before using this file.
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//
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// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
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// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
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//
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// The Original Code and all software distributed under the License is
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// distributed on an "AS IS" basis, without warranty of any kind, and the
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// Initial Developer hereby disclaims all such warranties, including without
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// limitation, any warranties of merchantability, fitness for a particular
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// purpose or non-infringement. Please see the License for the specific terms
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// and conditions governing the rights and limitations under the License.
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#include <OpenGl_CappingPlaneResource.hxx>
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#include <OpenGl_Context.hxx>
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#include <OpenGl_Vec.hxx>
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#include <Precision.hxx>
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IMPLEMENT_STANDARD_HANDLE (OpenGl_CappingPlaneResource, OpenGl_Resource)
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IMPLEMENT_STANDARD_RTTIEXT(OpenGl_CappingPlaneResource, OpenGl_Resource)
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// =======================================================================
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// function : OpenGl_CappingPlaneResource
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// purpose :
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// =======================================================================
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OpenGl_CappingPlaneResource::OpenGl_CappingPlaneResource (const Handle(Graphic3d_ClipPlane)& thePlane)
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: myOrientation (OpenGl_IdentityMatrix),
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myAspect (NULL),
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myPlaneRoot (thePlane),
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myEquationMod (0),
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myAspectMod (0)
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{}
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// =======================================================================
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// function : OpenGl_CappingPlaneResource
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// purpose :
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// =======================================================================
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OpenGl_CappingPlaneResource::~OpenGl_CappingPlaneResource()
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{
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Release (NULL);
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}
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// =======================================================================
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// function : Update
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// purpose :
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// =======================================================================
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void OpenGl_CappingPlaneResource::Update (const Handle(OpenGl_Context)& theContext)
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{
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UpdateTransform();
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UpdateAspect (theContext);
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}
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// =======================================================================
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// function : Release
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// purpose :
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// =======================================================================
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void OpenGl_CappingPlaneResource::Release (const OpenGl_Context* theContext)
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{
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OpenGl_Element::Destroy (theContext, myAspect);
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myEquationMod = 0;
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myAspectMod = 0;
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}
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// =======================================================================
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// function : UpdateAspect
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// purpose :
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// =======================================================================
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void OpenGl_CappingPlaneResource::UpdateAspect (const Handle(OpenGl_Context)& theContext)
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{
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Handle(Graphic3d_AspectFillArea3d) aCappingAsp = myPlaneRoot->CappingAspect();
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if (myAspect != NULL && !aCappingAsp.IsNull())
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{
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if (myAspectMod == myPlaneRoot->MCountAspect())
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return; // noting to update
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myAspect->Init (theContext, aCappingAsp);
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myAspectMod = myPlaneRoot->MCountAspect();
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return;
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}
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// no more used
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if (myAspect != NULL && aCappingAsp.IsNull())
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{
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OpenGl_Element::Destroy (theContext, myAspect);
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myAspectMod = myPlaneRoot->MCountAspect();
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return;
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}
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// first created
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if (myAspect == NULL && !aCappingAsp.IsNull())
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{
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myAspect = new OpenGl_AspectFace();
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myAspect->Init (theContext, aCappingAsp);
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myAspectMod = myPlaneRoot->MCountAspect();
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}
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}
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// =======================================================================
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// function : UpdateTransform
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// purpose :
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// =======================================================================
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void OpenGl_CappingPlaneResource::UpdateTransform()
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{
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const Graphic3d_ClipPlane::Equation& anEquation = myPlaneRoot->GetEquation();
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if (myEquationMod == myPlaneRoot->MCountEquation())
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{
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return; // nothing to update
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}
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// re-evaluate infinite plane transformation matrix
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Standard_ShortReal N[3] =
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{ (Standard_ShortReal)anEquation[0],
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(Standard_ShortReal)anEquation[1],
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(Standard_ShortReal)anEquation[2] };
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Standard_ShortReal T[3] =
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{ (Standard_ShortReal)(anEquation[0] * -anEquation[3]),
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(Standard_ShortReal)(anEquation[1] * -anEquation[3]),
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(Standard_ShortReal)(anEquation[2] * -anEquation[3]) };
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Standard_ShortReal L[3] = { 0.0f, 0.0f, 0.0f };
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Standard_ShortReal F[3] = { 0.0f, 0.0f, 0.0f };
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// project plane normal onto OX to find left vector
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Standard_ShortReal aConfusion = (Standard_ShortReal)Precision::Confusion();
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Standard_ShortReal aProjLen =
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sqrt ( (Standard_ShortReal)(anEquation[0] * anEquation[0])
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+ (Standard_ShortReal)(anEquation[2] * anEquation[2]));
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if (aProjLen < aConfusion)
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{
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L[0] = 1.0f;
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}
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else
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{
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L[0] = N[2] / aProjLen;
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L[2] = -N[0] / aProjLen;
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}
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// (-aLeft) x aNorm
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F[0] = (-L[1])*N[2] - (-L[2])*N[1];
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F[1] = (-L[2])*N[0] - (-L[0])*N[2];
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F[2] = (-L[0])*N[1] - (-L[1])*N[0];
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myOrientation.mat[0][0] = L[0];
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myOrientation.mat[0][1] = L[1];
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myOrientation.mat[0][2] = L[2];
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myOrientation.mat[0][3] = 0.0f;
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myOrientation.mat[1][0] = N[0];
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myOrientation.mat[1][1] = N[1];
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myOrientation.mat[1][2] = N[2];
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myOrientation.mat[1][3] = 0.0f;
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myOrientation.mat[2][0] = F[0];
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myOrientation.mat[2][1] = F[1];
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myOrientation.mat[2][2] = F[2];
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myOrientation.mat[2][3] = 0.0f;
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myOrientation.mat[3][0] = T[0];
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myOrientation.mat[3][1] = T[1];
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myOrientation.mat[3][2] = T[2];
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myOrientation.mat[3][3] = 1.0f;
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myEquationMod = myPlaneRoot->MCountEquation();
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}
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