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https://github.com/Open-Cascade-SAS/OCCT.git
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d5f74e42d6
License statement text corrected; compiler warnings caused by Bison 2.41 disabled for MSVC; a few other compiler warnings on 54-bit Windows eliminated by appropriate type cast Wrong license statements corrected in several files. Copyright and license statements added in XSD and GLSL files. Copyright year updated in some files. Obsolete documentation files removed from DrawResources.
137 lines
4.2 KiB
C++
137 lines
4.2 KiB
C++
// Created on: 1994-02-03
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// Created by: Jean Marc LACHAUME
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// Copyright (c) 1994-1999 Matra Datavision
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// Copyright (c) 1999-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#include <Draw_Grid.ixx>
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#include <gp_Pnt.hxx>
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#include <gp_Trsf.hxx>
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#include <Draw_Appli.hxx>
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#include <Draw_ColorKind.hxx>
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#include <Draw_Color.hxx>
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static Standard_Real MinimumStep = 1.e-3 ;
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static Standard_Real Ratio = 200.0 ;
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//#ifdef WNT
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extern Draw_Viewer dout;
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//#endif
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//=======================================================================
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// Function : Draw_Grid
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// Purpose : Constructor.
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//=======================================================================
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Draw_Grid::Draw_Grid () :
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myStepX (0.0) ,
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myStepY (0.0) ,
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myStepZ (0.0) ,
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myIsActive (Standard_False)
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{
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}
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//=======================================================================
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// Function : Steps
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// Purpose : Sets the steps along the X, Y & Z axis.
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//=======================================================================
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void Draw_Grid::Steps (const Standard_Real StepX,
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const Standard_Real StepY,
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const Standard_Real StepZ)
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{
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myStepX = Abs (StepX) ;
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myStepY = Abs (StepY) ;
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myStepZ = Abs (StepZ) ;
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myIsActive = myStepX > MinimumStep
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&& myStepY > MinimumStep
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&& myStepZ > MinimumStep ;
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}
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//=======================================================================
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// Function : DrawOn
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// Purpose : Displays the grid.
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//=======================================================================
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void Draw_Grid::DrawOn (Draw_Display& Out) const
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{
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if (!myIsActive) return ;
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Standard_Integer xmin, xmax, ymin, ymax ;
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Standard_Integer IndexX, IndexY ;
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Standard_Real StepX, StepY ;
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Standard_Integer MinIndexX, MaxIndexX, MinIndexY, MaxIndexY ;
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Standard_Real Offset ;
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Standard_Real zoom, Xmin, Xmax, Ymin, Ymax ;
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gp_Trsf T ;
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gp_Pnt Pnt1, Pnt2 ;
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Standard_Integer IdtView ;
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char *Type ;
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IdtView = Out.ViewId () ;
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if (!dout.HasView (IdtView)) return ;
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Type = dout.GetType (IdtView) ;
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switch (*(Type+1)) {
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case 'X' : StepX = myStepX ; break ;
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case 'Y' : StepX = myStepY ; break ;
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case 'Z' : StepX = myStepZ ; break ;
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default : StepX = 0.0 ; break ;
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}
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switch (*(Type+3)) {
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case 'X' : StepY = myStepX ; break ;
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case 'Y' : StepY = myStepY ; break ;
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case 'Z' : StepY = myStepZ ; break ;
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default : StepY = 0.0 ; break ;
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}
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if (StepX > MinimumStep && StepY > MinimumStep) {
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dout.GetFrame (IdtView, xmin, ymin, xmax, ymax) ;
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dout.GetTrsf (IdtView, T) ; T.Invert () ;
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zoom = dout.Zoom (IdtView) ;
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Xmin = ((Standard_Real) xmin) / zoom ;
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Xmax = ((Standard_Real) xmax) / zoom ;
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Ymin = ((Standard_Real) ymin) / zoom ;
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Ymax = ((Standard_Real) ymax) / zoom ;
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Offset = Min (Xmax - Xmin, Ymax - Ymin) / Ratio ;
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MinIndexX = (Standard_Integer) (Xmin / StepX) ;
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MaxIndexX = (Standard_Integer) (Xmax / StepX) ;
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MinIndexY = (Standard_Integer) (Ymin / StepY) ;
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MaxIndexY = (Standard_Integer) (Ymax / StepY) ;
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for (IndexX = MinIndexX ; IndexX <= MaxIndexX ; IndexX++) {
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for (IndexY = MinIndexY ; IndexY <= MaxIndexY ; IndexY++) {
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Standard_Real X = ((Standard_Real) IndexX) * StepX ;
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Standard_Real Y = ((Standard_Real) IndexY) * StepY ;
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Pnt1.SetCoord (X - Offset, Y, 0.0) ; Pnt1.Transform (T) ;
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Pnt2.SetCoord (X + Offset, Y, 0.0) ; Pnt2.Transform (T) ;
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Out.SetColor (Draw_Color (Draw_bleu)) ;
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Out.Draw (Pnt1, Pnt2) ;
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Pnt1.SetCoord (X, Y - Offset, 0.0) ; Pnt1.Transform (T) ;
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Pnt2.SetCoord (X, Y + Offset, 0.0) ; Pnt2.Transform (T) ;
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Out.SetColor (Draw_Color (Draw_bleu)) ;
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Out.Draw (Pnt1, Pnt2) ;
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}
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}
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}
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}
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