/* * This program source code file is part of KICAD, a free EDA CAD application. * * Copyright (C) 2024 Kicad Developers, see AUTHORS.txt for contributors. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, you may find one here: * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html * or you may search the http://www.gnu.org website for the version 2 license, * or you may write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA */ #include "preview_items/item_drawing_utils.h" #include #include #include using namespace KIGFX; void KIGFX::DrawCross( GAL& aGal, const VECTOR2I& aPosition, int aSize ) { const int size = aSize / 2; aGal.DrawLine( aPosition - VECTOR2I( size, 0 ), aPosition + VECTOR2I( size, 0 ) ); aGal.DrawLine( aPosition - VECTOR2I( 0, size ), aPosition + VECTOR2I( 0, size ) ); } void KIGFX::DrawDashedLine( GAL& aGal, const SEG& aSeg, double aDashSize ) { const std::array strokes = { aDashSize, aDashSize / 2 }; const double dashCycleLen = strokes[0] + strokes[1]; // The dash cycle length must be at least 1 pixel. wxASSERT( dashCycleLen * aGal.GetWorldScale() > 1 ); const BOX2I clip = BOX2I::ByCorners( aSeg.A, aSeg.B ); const double theta = atan2( aSeg.B.y - aSeg.A.y, aSeg.B.x - aSeg.A.x ); const VECTOR2D cycleVec{ dashCycleLen * cos( theta ), dashCycleLen * sin( theta ), }; const VECTOR2D dashVec{ strokes[0] * cos( theta ), strokes[0] * sin( theta ), }; unsigned cyclei = 0; while( true ) { const VECTOR2D dashStart = aSeg.A + cycleVec * cyclei; const VECTOR2D dashEnd = dashStart + dashVec; // Drawing each segment can be done rounded to ints. SEG dashSeg{ KiROUND( dashStart ), KiROUND( dashEnd ) }; if( ClipLine( &clip, dashSeg.A.x, dashSeg.A.y, dashSeg.B.x, dashSeg.B.y ) ) break; aGal.DrawLine( dashSeg.A, dashSeg.B ); ++cyclei; } }