142 lines
4.6 KiB
C++
142 lines
4.6 KiB
C++
/*
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* This program source code file is part of KiCad, a free EDA CAD application.
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*
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* Copyright (C) 2017 Kicad Developers, see AUTHORS.txt for contributors.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you may find one here:
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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* or you may search the http://www.gnu.org website for the version 2 license,
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* or you may write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <preview_items/arc_assistant.h>
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#include <preview_items/draw_context.h>
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#include <preview_items/preview_utils.h>
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#include <gal/graphics_abstraction_layer.h>
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#include <view/view.h>
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#include <common.h>
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#include <base_units.h>
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#include <trigo.h>
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using namespace KIGFX::PREVIEW;
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ARC_ASSISTANT::ARC_ASSISTANT( const ARC_GEOM_MANAGER& aManager, EDA_UNITS aUnits ) :
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EDA_ITEM( NOT_USED ),
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m_constructMan( aManager ),
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m_units( aUnits )
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{
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}
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const BOX2I ARC_ASSISTANT::ViewBBox() const
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{
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BOX2I tmp;
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// no bounding box when no graphic shown
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if( m_constructMan.IsReset() )
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return tmp;
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// this is an edit-time artefact; no reason to try and be smart with the bounding box
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// (besides, we can't tell the text extents without a view to know what the scale is)
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tmp.SetMaximum();
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return tmp;
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}
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/**
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* Get deci-degrees from radians, normalised to +/- 360.
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*
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* The normalisation is such that a negative angle will stay
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* negative.
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*/
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double getNormDeciDegFromRad( double aRadians )
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{
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double degs = RAD2DECIDEG( aRadians );
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// normalise to +/- 360
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while( degs < -3600.0 )
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degs += 3600.0;
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while( degs > 3600.0 )
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degs -= 3600.0;
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return degs;
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}
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void ARC_ASSISTANT::ViewDraw( int aLayer, KIGFX::VIEW* aView ) const
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{
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KIGFX::GAL& gal = *aView->GetGAL();
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// not in a position to draw anything
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if( m_constructMan.IsReset() )
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return;
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gal.ResetTextAttributes();
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const VECTOR2I origin = m_constructMan.GetOrigin();
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KIGFX::PREVIEW::DRAW_CONTEXT preview_ctx( *aView );
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// draw first radius line
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bool dimFirstLine = m_constructMan.GetStep() > ARC_GEOM_MANAGER::SET_START;
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preview_ctx.DrawLineWithAngleHighlight( origin, m_constructMan.GetStartRadiusEnd(),
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dimFirstLine );
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std::vector<wxString> cursorStrings;
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if( m_constructMan.GetStep() == ARC_GEOM_MANAGER::SET_START )
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{
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// haven't started the angle selection phase yet
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double initAngle = m_constructMan.GetStartAngle();
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// draw the radius guide circle
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preview_ctx.DrawCircle( origin, m_constructMan.GetRadius(), true );
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double degs = getNormDeciDegFromRad( initAngle );
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cursorStrings.push_back( DimensionLabel( "r", m_constructMan.GetRadius(), m_units ) );
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cursorStrings.push_back( DimensionLabel( wxString::FromUTF8( "θ" ), degs,
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EDA_UNITS::DEGREES ) );
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}
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else
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{
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preview_ctx.DrawLineWithAngleHighlight( origin, m_constructMan.GetEndRadiusEnd(), false );
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double start = m_constructMan.GetStartAngle();
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double subtended = m_constructMan.GetSubtended();
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double subtendedDeg = getNormDeciDegFromRad( subtended );
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double endAngleDeg = getNormDeciDegFromRad( start + subtended );
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// draw dimmed extender line to cursor
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preview_ctx.DrawLineWithAngleHighlight( origin, m_constructMan.GetLastPoint(), true );
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cursorStrings.push_back( DimensionLabel( wxString::FromUTF8( "Δθ" ), subtendedDeg,
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EDA_UNITS::DEGREES ) );
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cursorStrings.push_back( DimensionLabel( wxString::FromUTF8( "θ" ), endAngleDeg,
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EDA_UNITS::DEGREES ) );
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}
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// place the text next to cursor, on opposite side from radius
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DrawTextNextToCursor( aView, m_constructMan.GetLastPoint(),
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origin - m_constructMan.GetLastPoint(), cursorStrings,
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aLayer == LAYER_SELECT_OVERLAY );
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}
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