kicad/gerbview/rs274d.cpp

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/********************/
/**** rs274d.cpp ****/
/********************/
#include "fctsys.h"
#include "common.h"
#include "gerbview.h"
#include "trigo.h"
#include "macros.h"
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#include "class_gerber_draw_item.h"
#include "class_GERBER.h"
#include <math.h>
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/* Gerber: NOTES about some important commands found in RS274D and RS274X (G codes):
* Gn =
* G01 linear interpolation (right trace)
* G02, G20, G21 Circular interpolation, meaning trig <0 (clockwise)
* G03, G30, G31 Circular interpolation, meaning trigo> 0 (counterclockwise)
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* G04 = comment
* G06 parabolic interpolation
* G07 Cubic Interpolation
* G10 linear interpolation (scale x10)
* G11 linear interpolation (0.1x range)
* G12 linear interpolation (0.01x scale)
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* G36 Start polygon mode
* G37 Stop polygon mode (and close it)
* G54 Selection Tool
* G60 linear interpolation (scale x100)
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* G70 Select Units = Inches
* G71 Select Units = Millimeters
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* G74 disable 360 degrees circular interpolation (return to 90 deg mode)
* and perhaps circular interpolation (return to linear interpolation )
* see rs274xrevd_e.pdf pages 47 and 48
* Unfortunately page 47 said G74 disable G02 or G03
* and page 48 said G01 must be used to disable G02 or G03.
* Currently Gerbview disable G02 or G03 after a G74 command (tests using 2 gerber files).
* G75 enable 360 degrees circular interpolation
* G90 mode absolute coordinates
*
* X, Y
* X and Y are followed by + or - and m + n digits (not separated)
* m = integer part
* n = part after the comma
* Classic formats: m = 2, n = 3 (size 2.3)
* m = 3, n = 4 (size 3.4)
* eg
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* GxxX00345Y-06123*
*
* Tools and D_CODES
* Tool number (identification of shapes)
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* 10 to 999
* D_CODES:
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* D01 ... D9 = command codes:
* D01 = activating light (pen down) when placement
* D02 = light extinction (pen up) when placement
* D03 = Flash
* D09 = VAPE Flash (I never see this command in gerber file)
* D51 = G54 preceded by -> Select VAPE
*
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* D10 ... D999 = Identification Tool: tool selection
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*/
// Photoplot actions:
#define GERB_ACTIVE_DRAW 1 // Activate light (lower pen)
#define GERB_STOP_DRAW 2 // Extinguish light (lift pen)
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#define GERB_FLASH 3 // Flash
static wxPoint LastPosition;
/* Local Functions (are lower case since they are private to this source file)
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**/
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/**
* Function fillFlashedGBRITEM
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* initializes a given GBRITEM so that it can draw a circle which is filled and
* has no pen border.
*
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* @param aGbrItem The GBRITEM to fill in.
* @param aAperture the associated type of aperture
* @param Dcode_index The DCODE value, like D14
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* @param aLayer The layer index to set into the GBRITEM
* @param aPos The center point of the flash
* @param aSize The diameter of the round flash
* @param aLayerNegative = true if the current layer is negative
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*/
static void fillFlashedGBRITEM( GERBER_DRAW_ITEM* aGbrItem,
APERTURE_T aAperture,
int Dcode_index,
int aLayer,
const wxPoint& aPos,
wxSize aSize,
bool aLayerNegative )
{
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aGbrItem->SetLayer( aLayer );
aGbrItem->m_Size = aSize;
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aGbrItem->m_Start = aPos;
aGbrItem->m_End = aGbrItem->m_Start;
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aGbrItem->m_DCode = Dcode_index;
aGbrItem->SetLayerPolarity( aLayerNegative );
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aGbrItem->m_Flashed = true;
switch( aAperture )
{
case APT_POLYGON: // flashed regular polygon
aGbrItem->m_Shape = GBR_SPOT_POLY;
break;
case APT_CIRCLE:
aGbrItem->m_Shape = GBR_SPOT_CIRCLE;
aGbrItem->m_Size.y = aGbrItem->m_Size.x;
break;
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case APT_OVAL:
aGbrItem->m_Shape = GBR_SPOT_OVAL;
break;
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case APT_RECT:
aGbrItem->m_Shape = GBR_SPOT_RECT;
break;
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case APT_MACRO:
aGbrItem->m_Shape = GBR_SPOT_MACRO;
break;
}
}
/**
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* Function fillLineGBRITEM
* initializes a given GBRITEM so that it can draw a linear D code.
*
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* @param aGbrItem The GERBER_DRAW_ITEM to fill in.
* @param Dcode_index The DCODE value, like D14
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* @param aLayer The layer index to set into the GBRITEM
* @param aStart The starting point of the line
* @param aEnd The ending point of the line
* @param aPenSize The size of the flash. Note rectangular shapes are legal.
* @param aLayerNegative = true if the current layer is negative
*/
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static void fillLineGBRITEM( GERBER_DRAW_ITEM* aGbrItem,
int Dcode_index,
int aLayer,
const wxPoint& aStart,
const wxPoint& aEnd,
wxSize aPenSize,
bool aLayerNegative )
{
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aGbrItem->SetLayer( aLayer );
aGbrItem->m_Flashed = false;
aGbrItem->m_Size = aPenSize;
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aGbrItem->m_Start = aStart;
aGbrItem->m_End = aEnd;
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aGbrItem->m_DCode = Dcode_index;
aGbrItem->SetLayerPolarity( aLayerNegative );
}
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/**
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* Function fillArcGBRITEM
* initializes a given GBRITEM so that it can draw an arc G code.
* <p>
* if multiquadrant == true : arc can be 0 to 360 degrees
* and \a rel_center is the center coordinate relative to start point.
* <p>
* if multiquadrant == false arc can be only 0 to 90 deg,
* and only in the same quadrant :
* <ul>
* <li> absolute angle 0 to 90 (quadrant 1) or
* <li> absolute angle 90 to 180 (quadrant 2) or
* <li> absolute angle 180 to 270 (quadrant 3) or
* <li> absolute angle 270 to 0 (quadrant 4)
* </ul><p>
* @param aGbrItem is the GBRITEM to fill in.
* @param Dcode_index is the DCODE value, like D14
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* @param aLayer is the layer index to set into the GBRITEM
* @param aStart is the starting point
* @param aEnd is the ending point
* @param aRelCenter is the center coordinate relative to start point,
* given in ABSOLUTE VALUE and the sign of values x et y de rel_center
* must be calculated from the previously given constraint: arc only in the
* same quadrant.
* @param aClockwise true if arc must be created clockwise
* @param aPenSize The size of the flash. Note rectangular shapes are legal.
* @param aMultiquadrant = true to create arcs upto 360 deg,
* false when arc is inside one quadrant
* @param aLayerNegative = true if the current layer is negative
*/
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static void fillArcGBRITEM( GERBER_DRAW_ITEM* aGbrItem, int Dcode_index, int aLayer,
const wxPoint& aStart, const wxPoint& aEnd,
const wxPoint& aRelCenter, wxSize aPenSize,
bool aClockwise, bool aMultiquadrant,
bool aLayerNegative )
{
wxPoint center, delta;
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aGbrItem->m_Shape = GBR_ARC;
aGbrItem->SetLayer( aLayer );
aGbrItem->m_Size = aPenSize;
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aGbrItem->m_Flashed = false;
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if( aMultiquadrant )
center = aStart + aRelCenter;
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else
{
// in single quadrant mode the relative coordinate aRelCenter is always >= 0
// So we must recalculate the actual sign of aRelCenter.x and aRelCenter.y
center = aRelCenter;
// calculate arc end coordinate relative to the starting point,
// because center is relative to the center point
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delta = aEnd - aStart;
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// now calculate the relative to aStart center position, for a draw function
// that use trigonometric arc angle (or counter-clockwise)
/* Quadrants:
* Y
* 2 | 1
* -------X
* 3 | 4
* C = actual relative arc center, S = arc start (axis origin) E = relative arc end
*/
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if( (delta.x >= 0) && (delta.y >= 0) )
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{
/* Quadrant 1 (trigo or cclockwise):
* C | E
* ---S---
* 3 | 4
*/
NEGATE( center.x);
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}
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else if( (delta.x >= 0) && (delta.y < 0) )
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{
/* Quadrant 4 (trigo or cclockwise):
* 2 | C
* ---S---
* 3 | E
*/
// Nothing to do
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}
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else if( (delta.x < 0) && (delta.y >= 0) )
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{
/* Quadrant 2 (trigo or cclockwise):
* E | 1
* ---S---
* C | 4
*/
NEGATE( center.x);
NEGATE( center.y);
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}
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else
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{
/* Quadrant 3 (trigo or cclockwise):
* 2 | 1
* ---S---
* E | C
*/
NEGATE( center.y);
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}
// Due to your draw arc function, we need this:
if( !aClockwise )
center = - center;
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// Calculate actual arc center coordinate:
center += aStart;
}
if( aClockwise )
{
aGbrItem->m_Start = aStart;
aGbrItem->m_End = aEnd;
}
else
{
aGbrItem->m_Start = aEnd;
aGbrItem->m_End = aStart;
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}
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aGbrItem->m_ArcCentre = center;
aGbrItem->m_DCode = Dcode_index;
aGbrItem->SetLayerPolarity( aLayerNegative );
}
/**
* Function fillArcPOLY
* creates an arc G code when found in poly outlines.
* <p>
* if multiquadrant == true : arc can be 0 to 360 degrees
* and \a rel_center is the center coordinate relative to start point.
* <p>
* if multiquadrant == false arc can be only 0 to 90 deg,
* and only in the same quadrant :
* <ul>
* <li> absolute angle 0 to 90 (quadrant 1) or
* <li> absolute angle 90 to 180 (quadrant 2) or
* <li> absolute angle 180 to 270 (quadrant 3) or
* <li> absolute angle 270 to 0 (quadrant 4)
* </ul><p>
* @param aPcb is the board.
* @param aGbrItem is the GBRITEM to fill in.
* @param aStart is the starting point
* @param aEnd is the ending point
* @param rel_center is the center coordinate relative to start point,
* given in ABSOLUTE VALUE and the sign of values x et y de rel_center
* must be calculated from the previously given constraint: arc only in the
* same quadrant.
* @param aClockwise true if arc must be created clockwise
* @param aMultiquadrant = true to create arcs upto 360 deg,
* false when arc is inside one quadrant
* @param aLayerNegative = true if the current layer is negative
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*/
static void fillArcPOLY( BOARD* aPcb, GERBER_DRAW_ITEM* aGbrItem,
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const wxPoint& aStart, const wxPoint& aEnd,
const wxPoint& rel_center,
bool aClockwise, bool aMultiquadrant,
bool aLayerNegative )
{
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/* in order to calculate arc parameters, we use fillArcGBRITEM
* so we muse create a dummy track and use its geometric parameters
*/
static GERBER_DRAW_ITEM dummyGbrItem( NULL, NULL );
aGbrItem->SetLayerPolarity( aLayerNegative );
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fillArcGBRITEM( &dummyGbrItem, 0, 0,
aStart, aEnd, rel_center, wxSize(0, 0),
aClockwise, aMultiquadrant, aLayerNegative );
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wxPoint center;
center = dummyGbrItem.m_ArcCentre;
// Calculate coordinates relative to arc center;
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wxPoint start = dummyGbrItem.m_Start - center;
wxPoint end = dummyGbrItem.m_End - center;
/* Calculate angle arc
* angles are in 0.1 deg
* angle is trigonometrical (counter-clockwise),
* and axis is the X,Y gerber coordinates
*/
int start_angle = wxRound(atan2( (double) start.y, (double) start.x ) * 1800 / M_PI);
int end_angle = wxRound(atan2( (double) end.y, (double) end.x ) * 1800 / M_PI);
// dummyTrack has right geometric parameters, but
// fillArcGBRITEM calculates arc parameters for a draw function that expects
// start_angle < end_angle. So ensure this is the case here:
// Due to the fact atan2 returns angles between -180 to + 180 degrees,
// this is not always the case ( a modulo 360.0 degrees can be lost )
if( start_angle > end_angle )
end_angle += 3600;
int arc_angle = start_angle - end_angle;
// Approximate arc by 36 segments per 360 degree
const int increment_angle = 3600 / 36;
int count = ABS( arc_angle / increment_angle );
// calculate polygon corners
// when arc is counter-clockwise, dummyGbrItem arc goes from end to start
// and we must always create a polygon from start to end.
wxPoint start_arc = start;
for( int ii = 0; ii <= count; ii++ )
{
int rot;
wxPoint end_arc = start;
if( aClockwise )
rot = ii * increment_angle; // rot is in 0.1 deg
else
rot = (count - ii) * increment_angle; // rot is in 0.1 deg
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if( ii < count )
RotatePoint( &end_arc, -rot );
else // last point
end_arc = aClockwise ? end : start;
aGbrItem->m_PolyCorners.push_back( end_arc + center );
start_arc = end_arc;
}
}
/* Read the Gnn sequence and returns the value nn.
*/
int GERBER_IMAGE::ReturnGCodeNumber( char*& Text )
{
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int ii = 0;
char* text;
char line[1024];
if( Text == NULL )
return 0;
Text++;
text = line;
while( IsNumber( *Text ) )
{
*(text++) = *(Text++);
}
*text = 0;
ii = atoi( line );
return ii;
}
/* Get the sequence Dnn and returns the value nn
*/
int GERBER_IMAGE::ReturnDCodeNumber( char*& Text )
{
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int ii = 0;
char* text;
char line[1024];
if( Text == NULL )
return 0;
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Text++;
text = line;
while( IsNumber( *Text ) )
*(text++) = *(Text++);
*text = 0;
ii = atoi( line );
return ii;
}
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bool GERBER_IMAGE::Execute_G_Command( char*& text, int G_commande )
{
// D( printf( "%22s: G_CODE<%d>\n", __func__, G_commande ); )
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switch( G_commande )
{
case GC_PHOTO_MODE: // can starts a D03 flash command: redundant, can
// be safely ignored
break;
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case GC_LINEAR_INTERPOL_1X:
m_Iterpolation = GERB_INTERPOL_LINEAR_1X;
break;
case GC_CIRCLE_NEG_INTERPOL:
m_Iterpolation = GERB_INTERPOL_ARC_NEG;
break;
case GC_CIRCLE_POS_INTERPOL:
m_Iterpolation = GERB_INTERPOL_ARC_POS;
break;
case GC_COMMENT:
// Skip comment
while ( *text && (*text != '*') )
text++;
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break;
case GC_LINEAR_INTERPOL_10X:
m_Iterpolation = GERB_INTERPOL_LINEAR_10X;
break;
case GC_LINEAR_INTERPOL_0P1X:
m_Iterpolation = GERB_INTERPOL_LINEAR_01X;
break;
case GC_LINEAR_INTERPOL_0P01X:
m_Iterpolation = GERB_INTERPOL_LINEAR_001X;
break;
case GC_SELECT_TOOL:
{
int D_commande = ReturnDCodeNumber( text );
if( D_commande < FIRST_DCODE )
return false;
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if( D_commande > (TOOLS_MAX_COUNT - 1) )
D_commande = TOOLS_MAX_COUNT - 1;
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m_Current_Tool = D_commande;
D_CODE* pt_Dcode = GetDCODE( D_commande, false );
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if( pt_Dcode )
pt_Dcode->m_InUse = true;
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break;
}
case GC_SPECIFY_INCHES:
m_GerbMetric = false; // false = Inches, true = metric
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break;
case GC_SPECIFY_MILLIMETERS:
m_GerbMetric = true; // false = Inches, true = metric
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break;
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case GC_TURN_OFF_360_INTERPOL: // disable Multi cadran arc and Arc interpol
m_360Arc_enbl = false;
m_Iterpolation = GERB_INTERPOL_LINEAR_1X; // not sure it should be done
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break;
case GC_TURN_ON_360_INTERPOL:
m_360Arc_enbl = true;
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break;
case GC_SPECIFY_ABSOLUES_COORD:
m_Relative = false; // false = absolute Coord, true = relative
// Coord
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break;
case GC_SPECIFY_RELATIVEES_COORD:
m_Relative = true; // false = absolute Coord, true = relative
// Coord
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break;
case GC_TURN_ON_POLY_FILL:
m_PolygonFillMode = true;
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break;
case GC_TURN_OFF_POLY_FILL:
if( m_Exposure && m_Parent->GetBoard()->m_Drawings ) // End of polygon
{
GERBER_DRAW_ITEM * gbritem =
(GERBER_DRAW_ITEM*)( m_Parent->GetBoard()->m_Drawings.GetLast() );
StepAndRepeatItem( *gbritem );
}
m_Exposure = false;
m_PolygonFillMode = false;
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m_PolygonFillModeState = 0;
break;
case GC_MOVE: // Non existent
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default:
{
wxString msg;
msg.Printf( wxT( "G%0.2d command not handled" ), G_commande );
ReportMessage( msg );
return false;
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}
}
return true;
}
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/**
* Function scale
* converts a distance given in floating point to our deci-mils
*/
int scale( double aCoord, bool isMetric )
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{
int ret;
if( isMetric )
ret = wxRound( aCoord / 0.00254 );
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else
ret = wxRound( aCoord * PCB_INTERNAL_UNIT );
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return ret;
}
bool GERBER_IMAGE::Execute_DCODE_Command( char*& text, int D_commande )
{
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wxSize size( 15, 15 );
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APERTURE_T aperture = APT_CIRCLE;
GERBER_DRAW_ITEM* gbritem;
BOARD* pcb = m_Parent->GetBoard();
int activeLayer = m_Parent->GetScreen()->m_Active_Layer;
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int dcode = 0;
D_CODE* tool = NULL;
wxString msg;
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// D( printf( "%22s: D_CODE<%d>\n", __func__, D_commande ); )
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if( D_commande >= FIRST_DCODE ) // This is a "Set tool" command
{
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if( D_commande > (TOOLS_MAX_COUNT - 1) )
D_commande = TOOLS_MAX_COUNT - 1;
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// remember which tool is selected, nothing is done with it in this
// call
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m_Current_Tool = D_commande;
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D_CODE* pt_Dcode = GetDCODE( D_commande, false );
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if( pt_Dcode )
pt_Dcode->m_InUse = true;
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return true;
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}
else // D_commande = 0..9: this is a pen command (usually D1, D2 or D3)
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{
m_Last_Pen_Command = D_commande;
}
if( m_PolygonFillMode ) // Enter a polygon description:
{
switch( D_commande )
{
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case 1: // code D01 Draw line, exposure ON
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if( !m_Exposure )
{
m_Exposure = true;
gbritem = new GERBER_DRAW_ITEM( pcb, this );
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pcb->m_Drawings.Append( gbritem );
gbritem->m_Shape = GBR_POLYGON;
gbritem->SetLayer( activeLayer );
gbritem->m_Flashed = false;
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}
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switch( m_Iterpolation )
{
case GERB_INTERPOL_ARC_NEG:
case GERB_INTERPOL_ARC_POS:
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gbritem = (GERBER_DRAW_ITEM*)( pcb->m_Drawings.GetLast() );
// D( printf( "Add arc poly %d,%d to %d,%d fill %d interpol %d 360_enb %d\n",
// m_PreviousPos.x, m_PreviousPos.y, m_CurrentPos.x,
// m_CurrentPos.y, m_PolygonFillModeState,
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// m_Iterpolation, m_360Arc_enbl ); )
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fillArcPOLY( pcb, gbritem, m_PreviousPos,
m_CurrentPos, m_IJPos,
( m_Iterpolation == GERB_INTERPOL_ARC_NEG ) ? false : true,
m_360Arc_enbl, GetLayerParams().m_LayerNegative );
break;
default:
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gbritem = (GERBER_DRAW_ITEM*)( pcb->m_Drawings.GetLast() );
// D( printf( "Add poly edge %d,%d to %d,%d fill %d\n",
// m_PreviousPos.x, m_PreviousPos.y,
// m_CurrentPos.x, m_CurrentPos.y, m_Iterpolation ); )
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gbritem->m_Start = m_PreviousPos; // m_Start is used as temporary storage
if( gbritem->m_PolyCorners.size() == 0 )
gbritem->m_PolyCorners.push_back( gbritem->m_Start );
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gbritem->m_End = m_CurrentPos; // m_End is used as temporary storage
gbritem->m_PolyCorners.push_back( gbritem->m_End );
break;
}
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m_PreviousPos = m_CurrentPos;
m_PolygonFillModeState = 1;
break;
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case 2: // code D2: exposure OFF (i.e. "move to")
if( m_Exposure && pcb->m_Drawings ) // End of polygon
{
gbritem = (GERBER_DRAW_ITEM*)( pcb->m_Drawings.GetLast() );
StepAndRepeatItem( *gbritem );
}
m_Exposure = false;
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m_PreviousPos = m_CurrentPos;
m_PolygonFillModeState = 0;
break;
default:
return false;
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}
}
else
{
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switch( D_commande )
{
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case 1: // code D01 Draw line, exposure ON
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m_Exposure = true;
tool = GetDCODE( m_Current_Tool, false );
if( tool )
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{
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size = tool->m_Size;
dcode = tool->m_Num_Dcode;
aperture = tool->m_Shape;
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}
switch( m_Iterpolation )
{
case GERB_INTERPOL_LINEAR_1X:
gbritem = new GERBER_DRAW_ITEM( pcb, this );
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pcb->m_Drawings.Append( gbritem );
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// D( printf( "Add line %d,%d to %d,%d\n",
// m_PreviousPos.x, m_PreviousPos.y,
// m_CurrentPos.x, m_CurrentPos.y ); )
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fillLineGBRITEM( gbritem, dcode, activeLayer, m_PreviousPos,
m_CurrentPos, size, GetLayerParams().m_LayerNegative );
StepAndRepeatItem( *gbritem );
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break;
case GERB_INTERPOL_LINEAR_01X:
case GERB_INTERPOL_LINEAR_001X:
case GERB_INTERPOL_LINEAR_10X:
wxBell();
break;
case GERB_INTERPOL_ARC_NEG:
case GERB_INTERPOL_ARC_POS:
gbritem = new GERBER_DRAW_ITEM( pcb, this );
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pcb->m_Drawings.Append( gbritem );
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// D( printf( "Add arc %d,%d to %d,%d center %d, %d interpol %d 360_enb %d\n",
// m_PreviousPos.x, m_PreviousPos.y, m_CurrentPos.x,
// m_CurrentPos.y, m_IJPos.x,
// m_IJPos.y, m_Iterpolation, m_360Arc_enbl ); )
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fillArcGBRITEM( gbritem, dcode, activeLayer, m_PreviousPos,
m_CurrentPos, m_IJPos, size,
( m_Iterpolation == GERB_INTERPOL_ARC_NEG ) ?
false : true, m_360Arc_enbl, GetLayerParams().m_LayerNegative );
StepAndRepeatItem( *gbritem );
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break;
default:
msg.Printf( wxT( "RS274D: DCODE Command: interpol error (type %X)" ),
m_Iterpolation );
ReportMessage( msg );
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break;
}
m_PreviousPos = m_CurrentPos;
break;
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case 2: // code D2: exposure OFF (i.e. "move to")
m_Exposure = false;
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// D( printf( "Move to %d,%d to %d,%d\n",
// m_PreviousPos.x, m_PreviousPos.y,
// m_CurrentPos.x, m_CurrentPos.y ); )
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m_PreviousPos = m_CurrentPos;
break;
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case 3: // code D3: flash aperture
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tool = GetDCODE( m_Current_Tool, false );
if( tool )
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{
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size = tool->m_Size;
dcode = tool->m_Num_Dcode;
aperture = tool->m_Shape;
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}
gbritem = new GERBER_DRAW_ITEM( pcb, this );
pcb->m_Drawings.Append( gbritem );
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// D( printf( "Add flashed dcode %d layer %d at %d %d\n", dcode, activeLayer,
// m_CurrentPos.x, m_CurrentPos.y ); )
fillFlashedGBRITEM( gbritem, aperture,
dcode, activeLayer, m_CurrentPos,
size, GetLayerParams().m_LayerNegative );
StepAndRepeatItem( *gbritem );
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m_PreviousPos = m_CurrentPos;
break;
default:
return false;
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}
}
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return true;
}