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+/**
+ * @file common_plotDXF_functions.cpp
+ * @brief KiCad: Common plot DXF Routines.
+ */
+/*
+ * This program source code file is part of KiCad, a free EDA CAD application.
+ *
+ * Copyright (C) 2015 KiCad Developers, see CHANGELOG.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 <fctsys.h>
+#include <gr_basic.h>
+#include <trigo.h>
+#include <wxstruct.h>
+#include <base_struct.h>
+#include <plot_common.h>
+#include <macros.h>
+#include <kicad_string.h>
+#include <convert_basic_shapes_to_polygon.h>
+
+/**
+ * Oblique angle for DXF native text
+ * (I don't remember if 15 degrees is the ISO value... it looks nice anyway)
+ */
+static const double DXF_OBLIQUE_ANGLE = 15;
+
+/**
+ * Set the scale/position for the DXF plot
+ * The DXF engine doesn't support line widths and mirroring. The output
+ * coordinate system is in the first quadrant (in mm)
+ */
+void DXF_PLOTTER::SetViewport( const wxPoint& aOffset, double aIusPerDecimil,
+ double aScale, bool aMirror )
+{
+ plotOffset = aOffset;
+ plotScale = aScale;
+
+ /* DXF paper is 'virtual' so there is no need of a paper size.
+ Also this way we can handle the aux origin which can be useful
+ (for example when aligning to a mechanical drawing) */
+ paperSize.x = 0;
+ paperSize.y = 0;
+
+ /* Like paper size DXF units are abstract too. Anyway there is a
+ * system variable (MEASUREMENT) which will be set to 1 to indicate
+ * metric units */
+ m_IUsPerDecimil = aIusPerDecimil;
+ iuPerDeviceUnit = 1.0 / aIusPerDecimil; // Gives a DXF in decimils
+ iuPerDeviceUnit *= 0.00254; // ... now in mm
+
+ SetDefaultLineWidth( 0 ); // No line width on DXF
+ m_plotMirror = false; // No mirroring on DXF
+ m_currentColor = BLACK;
+}
+
+/**
+ * Opens the DXF plot with a skeleton header
+ */
+bool DXF_PLOTTER::StartPlot()
+{
+ wxASSERT( outputFile );
+
+ // DXF HEADER - Boilerplate
+ // Defines the minimum for drawing i.e. the angle system and the
+ // continuous linetype
+ fputs( " 0\n"
+ "SECTION\n"
+ " 2\n"
+ "HEADER\n"
+ " 9\n"
+ "$ANGBASE\n"
+ " 50\n"
+ "0.0\n"
+ " 9\n"
+ "$ANGDIR\n"
+ " 70\n"
+ " 1\n"
+ " 9\n"
+ "$MEASUREMENT\n"
+ " 70\n"
+ "0\n"
+ " 0\n" // This means 'metric units'
+ "ENDSEC\n"
+ " 0\n"
+ "SECTION\n"
+ " 2\n"
+ "TABLES\n"
+ " 0\n"
+ "TABLE\n"
+ " 2\n"
+ "LTYPE\n"
+ " 70\n"
+ "1\n"
+ " 0\n"
+ "LTYPE\n"
+ " 2\n"
+ "CONTINUOUS\n"
+ " 70\n"
+ "0\n"
+ " 3\n"
+ "Solid line\n"
+ " 72\n"
+ "65\n"
+ " 73\n"
+ "0\n"
+ " 40\n"
+ "0.0\n"
+ " 0\n"
+ "ENDTAB\n",
+ outputFile );
+
+ // Text styles table
+ // Defines 4 text styles, one for each bold/italic combination
+ fputs( " 0\n"
+ "TABLE\n"
+ " 2\n"
+ "STYLE\n"
+ " 70\n"
+ "4\n", outputFile );
+
+ static const char *style_name[4] = {"KICAD", "KICADB", "KICADI", "KICADBI"};
+ for(int i = 0; i < 4; i++ )
+ {
+ fprintf( outputFile,
+ " 0\n"
+ "STYLE\n"
+ " 2\n"
+ "%s\n" // Style name
+ " 70\n"
+ "0\n" // Standard flags
+ " 40\n"
+ "0\n" // Non-fixed height text
+ " 41\n"
+ "1\n" // Width factor (base)
+ " 42\n"
+ "1\n" // Last height (mandatory)
+ " 50\n"
+ "%g\n" // Oblique angle
+ " 71\n"
+ "0\n" // Generation flags (default)
+ " 3\n"
+ // The standard ISO font (when kicad is build with it
+ // the dxf text in acad matches *perfectly*)
+ "isocp.shx\n", // Font name (when not bigfont)
+ // Apply a 15 degree angle to italic text
+ style_name[i], i < 2 ? 0 : DXF_OBLIQUE_ANGLE );
+ }
+
+
+ // Layer table - one layer per color
+ fprintf( outputFile,
+ " 0\n"
+ "ENDTAB\n"
+ " 0\n"
+ "TABLE\n"
+ " 2\n"
+ "LAYER\n"
+ " 70\n"
+ "%d\n", NBCOLORS );
+
+ /* The layer/colors palette. The acad/DXF palette is divided in 3 zones:
+
+ - The primary colors (1 - 9)
+ - An HSV zone (10-250, 5 values x 2 saturations x 10 hues
+ - Greys (251 - 255)
+
+ There is *no* black... the white does it on paper, usually, and
+ anyway it depends on the plotter configuration, since DXF colors
+ are meant to be logical only (they represent *both* line color and
+ width); later version with plot styles only complicate the matter!
+
+ As usual, brown and magenta/purple are difficult to place since
+ they are actually variations of other colors.
+ */
+ static const struct {
+ const char *name;
+ int color;
+ } dxf_layer[NBCOLORS] = {
+ { "BLACK", 7 }, // In DXF, color 7 is *both* white and black!
+ { "GRAY1", 251 },
+ { "GRAY2", 8 },
+ { "GRAY3", 9 },
+ { "WHITE", 7 },
+ { "LYELLOW", 51 },
+ { "BLUE1", 178 },
+ { "GREEN1", 98 },
+ { "CYAN1", 138 },
+ { "RED1", 18 },
+ { "MAGENTA1", 228 },
+ { "BROWN1", 58 },
+ { "BLUE2", 5 },
+ { "GREEN2", 3 },
+ { "CYAN2", 4 },
+ { "RED2", 1 },
+ { "MAGENTA2", 6 },
+ { "BROWN2", 54 },
+ { "BLUE3", 171 },
+ { "GREEN3", 91 },
+ { "CYAN3", 131 },
+ { "RED3", 11 },
+ { "MAGENTA3", 221 },
+ { "YELLOW3", 2 },
+ { "BLUE4", 5 },
+ { "GREEN4", 3 },
+ { "CYAN4", 4 },
+ { "RED4", 1 },
+ { "MAGENTA4", 6 },
+ { "YELLOW4", 2 }
+ };
+
+ for( EDA_COLOR_T i = BLACK; i < NBCOLORS; i = NextColor(i) )
+ {
+ fprintf( outputFile,
+ " 0\n"
+ "LAYER\n"
+ " 2\n"
+ "%s\n" // Layer name
+ " 70\n"
+ "0\n" // Standard flags
+ " 62\n"
+ "%d\n" // Color number
+ " 6\n"
+ "CONTINUOUS\n",// Linetype name
+ dxf_layer[i].name, dxf_layer[i].color );
+ }
+
+ // End of layer table, begin entities
+ fputs( " 0\n"
+ "ENDTAB\n"
+ " 0\n"
+ "ENDSEC\n"
+ " 0\n"
+ "SECTION\n"
+ " 2\n"
+ "ENTITIES\n", outputFile );
+
+ return true;
+}
+
+
+bool DXF_PLOTTER::EndPlot()
+{
+ wxASSERT( outputFile );
+
+ // DXF FOOTER
+ fputs( " 0\n"
+ "ENDSEC\n"
+ " 0\n"
+ "EOF\n", outputFile );
+ fclose( outputFile );
+ outputFile = NULL;
+
+ return true;
+}
+
+
+/**
+ * The DXF exporter handles 'colors' as layers...
+ */
+void DXF_PLOTTER::SetColor( EDA_COLOR_T color )
+{
+ if( ( color >= 0 && colorMode )
+ || ( color == BLACK )
+ || ( color == WHITE ) )
+ {
+ m_currentColor = color;
+ }
+ else
+ m_currentColor = BLACK;
+}
+
+/**
+ * DXF rectangle: fill not supported
+ */
+void DXF_PLOTTER::Rect( const wxPoint& p1, const wxPoint& p2, FILL_T fill, int width )
+{
+ MoveTo( p1 );
+ LineTo( wxPoint( p1.x, p2.y ) );
+ LineTo( wxPoint( p2.x, p2.y ) );
+ LineTo( wxPoint( p2.x, p1.y ) );
+ FinishTo( wxPoint( p1.x, p1.y ) );
+}
+
+
+/**
+ * DXF circle: full functionality; it even does 'fills' drawing a
+ * circle with a dual-arc polyline wide as the radius.
+ *
+ * I could use this trick to do other filled primitives
+ */
+void DXF_PLOTTER::Circle( const wxPoint& centre, int diameter, FILL_T fill, int width )
+{
+ wxASSERT( outputFile );
+ double radius = userToDeviceSize( diameter / 2 );
+ DPOINT centre_dev = userToDeviceCoordinates( centre );
+ if( radius > 0 )
+ {
+ wxString cname( ColorGetName( m_currentColor ) );
+ if (!fill)
+ {
+ fprintf( outputFile, "0\nCIRCLE\n8\n%s\n10\n%g\n20\n%g\n40\n%g\n",
+ TO_UTF8( cname ),
+ centre_dev.x, centre_dev.y, radius );
+ }
+ if (fill == FILLED_SHAPE)
+ {
+ double r = radius*0.5;
+ fprintf( outputFile, "0\nPOLYLINE\n");
+ fprintf( outputFile, "8\n%s\n66\n1\n70\n1\n", TO_UTF8( cname ));
+ fprintf( outputFile, "40\n%g\n41\n%g\n", radius, radius);
+ fprintf( outputFile, "0\nVERTEX\n8\n%s\n", TO_UTF8( cname ));
+ fprintf( outputFile, "10\n%g\n 20\n%g\n42\n1.0\n",
+ centre_dev.x-r, centre_dev.y );
+ fprintf( outputFile, "0\nVERTEX\n8\n%s\n", TO_UTF8( cname ));
+ fprintf( outputFile, "10\n%g\n 20\n%g\n42\n1.0\n",
+ centre_dev.x+r, centre_dev.y );
+ fprintf( outputFile, "0\nSEQEND\n");
+ }
+ }
+}
+
+
+/**
+ * DXF polygon: doesn't fill it but at least it close the filled ones
+ * DXF does not know thick outline.
+ * It does not know thhick segments, therefore filled polygons with thick outline
+ * are converted to inflated polygon by aWidth/2
+ */
+void DXF_PLOTTER::PlotPoly( const std::vector<wxPoint>& aCornerList,
+ FILL_T aFill, int aWidth)
+{
+ if( aCornerList.size() <= 1 )
+ return;
+
+ unsigned last = aCornerList.size() - 1;
+
+ // Plot outlines with lines (thickness = 0) to define the polygon
+ if( aWidth <= 0 )
+ {
+ MoveTo( aCornerList[0] );
+
+ for( unsigned ii = 1; ii < aCornerList.size(); ii++ )
+ LineTo( aCornerList[ii] );
+
+ // Close polygon if 'fill' requested
+ if( aFill )
+ {
+ if( aCornerList[last] != aCornerList[0] )
+ LineTo( aCornerList[0] );
+ }
+
+ PenFinish();
+
+ return;
+ }
+
+
+ // if the polygon outline has thickness, and is not filled
+ // (i.e. is a polyline) plot outlines with thick segments
+ if( aWidth > 0 && !aFill )
+ {
+ MoveTo( aCornerList[0] );
+
+ for( unsigned ii = 1; ii < aCornerList.size(); ii++ )
+ ThickSegment( aCornerList[ii-1], aCornerList[ii],
+ aWidth, FILLED );
+
+ return;
+ }
+
+ // The polygon outline has thickness, and is filled
+ // Build and plot the polygon which contains the initial
+ // polygon and its thick outline
+ SHAPE_POLY_SET bufferOutline;
+ SHAPE_POLY_SET bufferPolybase;
+ const int circleToSegmentsCount = 16;
+
+ bufferPolybase.NewOutline();
+
+ // enter outline as polygon:
+ for( unsigned ii = 1; ii < aCornerList.size(); ii++ )
+ {
+ TransformRoundedEndsSegmentToPolygon( bufferOutline,
+ aCornerList[ii-1], aCornerList[ii], circleToSegmentsCount, aWidth );
+ }
+
+ // enter the initial polygon:
+ for( unsigned ii = 0; ii < aCornerList.size(); ii++ )
+ {
+ bufferPolybase.Append( aCornerList[ii] );
+ }
+
+ // Merge polygons to build the polygon which contains the initial
+ // polygon and its thick outline
+
+ bufferPolybase.BooleanAdd( bufferOutline ); // create the outline which contains thick outline
+ bufferPolybase.Fracture();
+
+
+ if( bufferPolybase.OutlineCount() < 1 ) // should not happen
+ return;
+
+ const SHAPE_LINE_CHAIN& path = bufferPolybase.COutline( 0 );
+
+ if( path.PointCount() < 2 ) // should not happen
+ return;
+
+ // Now, output the final polygon to DXF file:
+ last = path.PointCount() - 1;
+ VECTOR2I point = path.CPoint( 0 );
+
+ wxPoint startPoint( point.x, point.y );
+ MoveTo( startPoint );
+
+ for( int ii = 1; ii < path.PointCount(); ii++ )
+ {
+ point = path.CPoint( ii );
+ LineTo( wxPoint( point.x, point.y ) );
+ }
+
+ // Close polygon, if needed
+ point = path.CPoint( last );
+ wxPoint endPoint( point.x, point.y );
+
+ if( endPoint != startPoint )
+ LineTo( startPoint );
+
+ PenFinish();
+}
+
+
+void DXF_PLOTTER::PenTo( const wxPoint& pos, char plume )
+{
+ wxASSERT( outputFile );
+ if( plume == 'Z' )
+ {
+ return;
+ }
+ DPOINT pos_dev = userToDeviceCoordinates( pos );
+ DPOINT pen_lastpos_dev = userToDeviceCoordinates( penLastpos );
+
+ if( penLastpos != pos && plume == 'D' )
+ {
+ // DXF LINE
+ wxString cname( ColorGetName( m_currentColor ) );
+ fprintf( outputFile, "0\nLINE\n8\n%s\n10\n%g\n20\n%g\n11\n%g\n21\n%g\n",
+ TO_UTF8( cname ),
+ pen_lastpos_dev.x, pen_lastpos_dev.y, pos_dev.x, pos_dev.y );
+ }
+ penLastpos = pos;
+}
+
+
+/**
+ * Dashed lines are not (yet) supported by DXF_PLOTTER
+ */
+void DXF_PLOTTER::SetDash( bool dashed )
+{
+ // NOP for now
+}
+
+
+void DXF_PLOTTER::ThickSegment( const wxPoint& aStart, const wxPoint& aEnd, int aWidth,
+ EDA_DRAW_MODE_T aPlotMode )
+{
+ MoveTo( aStart );
+ FinishTo( aEnd );
+}
+
+/* Plot an arc in DXF format
+ * Filling is not supported
+ */
+void DXF_PLOTTER::Arc( const wxPoint& centre, double StAngle, double EndAngle, int radius,
+ FILL_T fill, int width )
+{
+ wxASSERT( outputFile );
+
+ if( radius <= 0 )
+ return;
+
+ // In DXF, arcs are drawn CCW.
+ // In Kicad, arcs are CW or CCW
+ // If StAngle > EndAngle, it is CW. So transform it to CCW
+ if( StAngle > EndAngle )
+ {
+ std::swap( StAngle, EndAngle );
+ }
+
+ DPOINT centre_dev = userToDeviceCoordinates( centre );
+ double radius_dev = userToDeviceSize( radius );
+
+ // Emit a DXF ARC entity
+ wxString cname( ColorGetName( m_currentColor ) );
+ fprintf( outputFile,
+ "0\nARC\n8\n%s\n10\n%g\n20\n%g\n40\n%g\n50\n%g\n51\n%g\n",
+ TO_UTF8( cname ),
+ centre_dev.x, centre_dev.y, radius_dev,
+ StAngle / 10.0, EndAngle / 10.0 );
+}
+
+/**
+ * DXF oval pad: always done in sketch mode
+ */
+void DXF_PLOTTER::FlashPadOval( const wxPoint& pos, const wxSize& aSize, double orient,
+ EDA_DRAW_MODE_T trace_mode )
+{
+ wxSize size( aSize );
+
+ /* The chip is reduced to an oval tablet with size.y > size.x
+ * (Oval vertical orientation 0) */
+ if( size.x > size.y )
+ {
+ std::swap( size.x, size.y );
+ orient = AddAngles( orient, 900 );
+ }
+
+ sketchOval( pos, size, orient, -1 );
+}
+
+
+/**
+ * DXF round pad: always done in sketch mode; it could be filled but it isn't
+ * pretty if other kinds of pad aren't...
+ */
+void DXF_PLOTTER::FlashPadCircle( const wxPoint& pos, int diametre,
+ EDA_DRAW_MODE_T trace_mode )
+{
+ Circle( pos, diametre, NO_FILL );
+}
+
+
+/**
+ * DXF rectangular pad: alwayd done in sketch mode
+ */
+void DXF_PLOTTER::FlashPadRect( const wxPoint& pos, const wxSize& padsize,
+ double orient, EDA_DRAW_MODE_T trace_mode )
+{
+ wxASSERT( outputFile );
+ wxSize size;
+ int ox, oy, fx, fy;
+
+ size.x = padsize.x / 2;
+ size.y = padsize.y / 2;
+
+ if( size.x < 0 )
+ size.x = 0;
+ if( size.y < 0 )
+ size.y = 0;
+
+ // If a dimension is zero, the trace is reduced to 1 line
+ if( size.x == 0 )
+ {
+ ox = pos.x;
+ oy = pos.y - size.y;
+ RotatePoint( &ox, &oy, pos.x, pos.y, orient );
+ fx = pos.x;
+ fy = pos.y + size.y;
+ RotatePoint( &fx, &fy, pos.x, pos.y, orient );
+ MoveTo( wxPoint( ox, oy ) );
+ FinishTo( wxPoint( fx, fy ) );
+ return;
+ }
+ if( size.y == 0 )
+ {
+ ox = pos.x - size.x;
+ oy = pos.y;
+ RotatePoint( &ox, &oy, pos.x, pos.y, orient );
+ fx = pos.x + size.x;
+ fy = pos.y;
+ RotatePoint( &fx, &fy, pos.x, pos.y, orient );
+ MoveTo( wxPoint( ox, oy ) );
+ FinishTo( wxPoint( fx, fy ) );
+ return;
+ }
+
+ ox = pos.x - size.x;
+ oy = pos.y - size.y;
+ RotatePoint( &ox, &oy, pos.x, pos.y, orient );
+ MoveTo( wxPoint( ox, oy ) );
+
+ fx = pos.x - size.x;
+ fy = pos.y + size.y;
+ RotatePoint( &fx, &fy, pos.x, pos.y, orient );
+ LineTo( wxPoint( fx, fy ) );
+
+ fx = pos.x + size.x;
+ fy = pos.y + size.y;
+ RotatePoint( &fx, &fy, pos.x, pos.y, orient );
+ LineTo( wxPoint( fx, fy ) );
+
+ fx = pos.x + size.x;
+ fy = pos.y - size.y;
+ RotatePoint( &fx, &fy, pos.x, pos.y, orient );
+ LineTo( wxPoint( fx, fy ) );
+
+ FinishTo( wxPoint( ox, oy ) );
+}
+
+
+/**
+ * DXF trapezoidal pad: only sketch mode is supported
+ */
+void DXF_PLOTTER::FlashPadTrapez( const wxPoint& aPadPos, const wxPoint *aCorners,
+ double aPadOrient, EDA_DRAW_MODE_T aTrace_Mode )
+{
+ wxPoint coord[4]; /* coord actual corners of a trapezoidal trace */
+
+ for( int ii = 0; ii < 4; ii++ )
+ {
+ coord[ii] = aCorners[ii];
+ RotatePoint( &coord[ii], aPadOrient );
+ coord[ii] += aPadPos;
+ }
+
+ // Plot edge:
+ MoveTo( coord[0] );
+ LineTo( coord[1] );
+ LineTo( coord[2] );
+ LineTo( coord[3] );
+ FinishTo( coord[0] );
+}
+
+/**
+ * Checks if a given string contains non-ASCII characters.
+ * FIXME: the performance of this code is really poor, but in this case it can be
+ * acceptable because the plot operation is not called very often.
+ * @param string String to check
+ * @return true if it contains some non-ASCII character, false if all characters are
+ * inside ASCII range (<=255).
+ */
+bool containsNonAsciiChars( const wxString& string )
+{
+ for( unsigned i = 0; i < string.length(); i++ )
+ {
+ wchar_t ch = string[i];
+ if( ch > 255 )
+ return true;
+ }
+ return false;
+}
+
+void DXF_PLOTTER::Text( const wxPoint& aPos,
+ enum EDA_COLOR_T aColor,
+ const wxString& aText,
+ double aOrient,
+ const wxSize& aSize,
+ enum EDA_TEXT_HJUSTIFY_T aH_justify,
+ enum EDA_TEXT_VJUSTIFY_T aV_justify,
+ int aWidth,
+ bool aItalic,
+ bool aBold,
+ bool aMultilineAllowed )
+{
+ // Fix me: see how to use DXF text mode for multiline texts
+ if( aMultilineAllowed && !aText.Contains( wxT( "\n" ) ) )
+ aMultilineAllowed = false; // the text has only one line.
+
+ if( textAsLines || containsNonAsciiChars( aText ) || aMultilineAllowed )
+ {
+ // output text as graphics.
+ // Perhaps multiline texts could be handled as DXF text entity
+ // but I do not want spend time about this (JPC)
+ PLOTTER::Text( aPos, aColor, aText, aOrient, aSize, aH_justify, aV_justify,
+ aWidth, aItalic, aBold, aMultilineAllowed );
+ }
+ else
+ {
+ /* Emit text as a text entity. This loses formatting and shape but it's
+ more useful as a CAD object */
+ DPOINT origin_dev = userToDeviceCoordinates( aPos );
+ SetColor( aColor );
+ wxString cname( ColorGetName( m_currentColor ) );
+ DPOINT size_dev = userToDeviceSize( aSize );
+ int h_code = 0, v_code = 0;
+ switch( aH_justify )
+ {
+ case GR_TEXT_HJUSTIFY_LEFT:
+ h_code = 0;
+ break;
+ case GR_TEXT_HJUSTIFY_CENTER:
+ h_code = 1;
+ break;
+ case GR_TEXT_HJUSTIFY_RIGHT:
+ h_code = 2;
+ break;
+ }
+ switch( aV_justify )
+ {
+ case GR_TEXT_VJUSTIFY_TOP:
+ v_code = 3;
+ break;
+ case GR_TEXT_VJUSTIFY_CENTER:
+ v_code = 2;
+ break;
+ case GR_TEXT_VJUSTIFY_BOTTOM:
+ v_code = 1;
+ break;
+ }
+
+ // Position, size, rotation and alignment
+ // The two alignment point usages is somewhat idiot (see the DXF ref)
+ // Anyway since we don't use the fit/aligned options, they're the same
+ fprintf( outputFile,
+ " 0\n"
+ "TEXT\n"
+ " 7\n"
+ "%s\n" // Text style
+ " 8\n"
+ "%s\n" // Layer name
+ " 10\n"
+ "%g\n" // First point X
+ " 11\n"
+ "%g\n" // Second point X
+ " 20\n"
+ "%g\n" // First point Y
+ " 21\n"
+ "%g\n" // Second point Y
+ " 40\n"
+ "%g\n" // Text height
+ " 41\n"
+ "%g\n" // Width factor
+ " 50\n"
+ "%g\n" // Rotation
+ " 51\n"
+ "%g\n" // Oblique angle
+ " 71\n"
+ "%d\n" // Mirror flags
+ " 72\n"
+ "%d\n" // H alignment
+ " 73\n"
+ "%d\n", // V alignment
+ aBold ? (aItalic ? "KICADBI" : "KICADB")
+ : (aItalic ? "KICADI" : "KICAD"),
+ TO_UTF8( cname ),
+ origin_dev.x, origin_dev.x,
+ origin_dev.y, origin_dev.y,
+ size_dev.y, fabs( size_dev.x / size_dev.y ),
+ aOrient / 10.0,
+ aItalic ? DXF_OBLIQUE_ANGLE : 0,
+ size_dev.x < 0 ? 2 : 0, // X mirror flag
+ h_code, v_code );
+
+ /* There are two issue in emitting the text:
+ - Our overline character (~) must be converted to the appropriate
+ control sequence %%O or %%o
+ - Text encoding in DXF is more or less unspecified since depends on
+ the DXF declared version, the acad version reading it *and* some
+ system variables to be put in the header handled only by newer acads
+ Also before R15 unicode simply is not supported (you need to use
+ bigfonts which are a massive PITA). Common denominator solution:
+ use Latin1 (and however someone could choke on it, anyway). Sorry
+ for the extended latin people. If somewant want to try fixing this
+ recent version seems to use UTF-8 (and not UCS2 like the rest of
+ Windows)
+
+ XXX Actually there is a *third* issue: older DXF formats are limited
+ to 255 bytes records (it was later raised to 2048); since I'm lazy
+ and text so long is not probable I just don't implement this rule.
+ If someone is interested in fixing this, you have to emit the first
+ partial lines with group code 3 (max 250 bytes each) and then finish
+ with a group code 1 (less than 250 bytes). The DXF refs explains it
+ in no more details...
+ */
+
+ bool overlining = false;
+ fputs( " 1\n", outputFile );
+ for( unsigned i = 0; i < aText.length(); i++ )
+ {
+ /* Here I do a bad thing: writing the output one byte at a time!
+ but today I'm lazy and I have no idea on how to coerce a Unicode
+ wxString to spit out latin1 encoded text ...
+
+ Atleast stdio is *supposed* to do output buffering, so there is
+ hope is not too slow */
+ wchar_t ch = aText[i];
+ if( ch > 255 )
+ {
+ // I can't encode this...
+ putc( '?', outputFile );
+ }
+ else
+ {
+ if( ch == '~' )
+ {
+ // Handle the overline toggle
+ fputs( overlining ? "%%o" : "%%O", outputFile );
+ overlining = !overlining;
+ }
+ else
+ {
+ putc( ch, outputFile );
+ }
+ }
+ }
+ putc( '\n', outputFile );
+ }
+}
+
generated by cgit (git 2.34.1) at 2024-12-19 15:38:36 +0000