267 lines
7.1 KiB
C
267 lines
7.1 KiB
C
/* $Xorg: PclArc.c,v 1.3 2000/08/17 19:48:07 cpqbld Exp $ */
|
|
/*******************************************************************
|
|
**
|
|
** *********************************************************
|
|
** *
|
|
** * File: PclArc.c
|
|
** *
|
|
** * Contents:
|
|
** * Arc-drawing code for the PCL DDX driver
|
|
** *
|
|
** * Created: 10/23/95
|
|
** *
|
|
** *********************************************************
|
|
**
|
|
********************************************************************/
|
|
/*
|
|
(c) Copyright 1996 Hewlett-Packard Company
|
|
(c) Copyright 1996 International Business Machines Corp.
|
|
(c) Copyright 1996 Sun Microsystems, Inc.
|
|
(c) Copyright 1996 Novell, Inc.
|
|
(c) Copyright 1996 Digital Equipment Corp.
|
|
(c) Copyright 1996 Fujitsu Limited
|
|
(c) Copyright 1996 Hitachi, Ltd.
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
of this software and associated documentation files (the "Software"), to deal
|
|
in the Software without restriction, including without limitation the rights
|
|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
copies of the Software, and to permit persons to whom the Software is
|
|
furnished to do so, subject to the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be included in
|
|
all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
|
|
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
|
|
Except as contained in this notice, the names of the copyright holders shall
|
|
not be used in advertising or otherwise to promote the sale, use or other
|
|
dealings in this Software without prior written authorization from said
|
|
copyright holders.
|
|
*/
|
|
|
|
/* $XFree86: xc/programs/Xserver/Xprint/pcl/PclArc.c,v 1.4 1999/12/13 02:12:53 robin Exp $ */
|
|
|
|
#include <stdio.h>
|
|
#include <math.h>
|
|
#include <errno.h>
|
|
|
|
#include "Pcl.h"
|
|
#include "gcstruct.h"
|
|
#include "windowstr.h"
|
|
#include "attributes.h"
|
|
|
|
static void
|
|
PclDoArc(
|
|
DrawablePtr pDrawable,
|
|
GCPtr pGC,
|
|
int nArcs,
|
|
xArc *pArcs,
|
|
void (*DoIt)(FILE *, PclContextPrivPtr, double, double, xArc))
|
|
{
|
|
char t[80];
|
|
FILE *outFile;
|
|
int nbox, i;
|
|
BoxPtr pbox;
|
|
BoxRec r;
|
|
RegionPtr drawRegion, region, transClip;
|
|
short fudge;
|
|
int xoffset, yoffset;
|
|
XpContextPtr pCon;
|
|
PclContextPrivPtr pConPriv;
|
|
xRectangle repro;
|
|
|
|
if( PclUpdateDrawableGC( pGC, pDrawable, &outFile ) == FALSE )
|
|
return;
|
|
|
|
fudge = 3 * pGC->lineWidth;
|
|
|
|
pCon = PclGetContextFromWindow( (WindowPtr) pDrawable );
|
|
pConPriv = (PclContextPrivPtr)
|
|
pCon->devPrivates[PclContextPrivateIndex].ptr;
|
|
XpGetReproductionArea( pCon, &repro );
|
|
|
|
/*
|
|
* Generate the PCL code to draw the collection of arcs, by
|
|
* defining it as a macro which uses the HP-GL/2 arc drawing
|
|
* function.
|
|
*/
|
|
|
|
xoffset = pDrawable->x;
|
|
yoffset = pDrawable->y;
|
|
|
|
for( i = 0; i < nArcs; i++ )
|
|
{
|
|
xArc Arc = pArcs[i];
|
|
double b, X, Y, ratio;
|
|
double angle1;
|
|
|
|
MACRO_START( outFile, pConPriv );
|
|
SAVE_PCL( outFile, pConPriv, "\033%0B" );
|
|
|
|
/* Calculate the start of the arc */
|
|
if( ( Arc.angle1 / 64 ) % 360 == 90 )
|
|
{
|
|
X = 0;
|
|
Y = -Arc.height / 2.0;
|
|
}
|
|
else if( ( Arc.angle1 / 64 ) % 360 == 270 )
|
|
{
|
|
X = 0;
|
|
Y = Arc.height / 2.0;
|
|
}
|
|
else
|
|
{
|
|
/* Convert the angle to radians */
|
|
angle1 = ( Arc.angle1 / 64.0 ) * 3.141592654 / 180.0;
|
|
|
|
b = (Arc.height / 2.0);
|
|
X = b * cos( angle1 );
|
|
Y = -b * sin( angle1 );
|
|
}
|
|
|
|
/* Change the coordinate system to scale the ellipse */
|
|
ratio = (double)Arc.height / (double)Arc.width;
|
|
|
|
sprintf( t, "SC%.2f,%.2f,%d,%d;",
|
|
(repro.x - Arc.width / 2 - xoffset - Arc.x) * ratio,
|
|
(repro.x - Arc.width / 2 - xoffset - Arc.x +
|
|
repro.width) * ratio,
|
|
repro.y - Arc.height / 2 - yoffset - Arc.y + repro.height,
|
|
repro.y - Arc.height / 2 - yoffset - Arc.y);
|
|
SAVE_PCL( outFile, pConPriv, t );
|
|
|
|
DoIt( outFile, pConPriv, X, Y, Arc );
|
|
|
|
/* Build the bounding box */
|
|
r.x1 = -Arc.width / 2 - fudge;
|
|
r.y1 = -Arc.height / 2 - fudge;
|
|
r.x2 = Arc.width / 2 + fudge;
|
|
r.y2 = Arc.height / 2 + fudge;
|
|
drawRegion = REGION_CREATE( pGC->pScreen, &r, 0 );
|
|
|
|
SAVE_PCL( outFile, pConPriv, "\033%0A" );
|
|
MACRO_END( outFile );
|
|
|
|
/*
|
|
* Intersect the bounding box with the clip region.
|
|
*/
|
|
region = REGION_CREATE( pGC->pScreen, NULL, 0 );
|
|
transClip = REGION_CREATE( pGC->pScreen, NULL, 0 );
|
|
REGION_COPY( pGC->pScreen, transClip, pGC->pCompositeClip );
|
|
REGION_TRANSLATE( pGC->pScreen, transClip,
|
|
-(xoffset + Arc.x + Arc.width / 2),
|
|
-(yoffset + Arc.y + Arc.height / 2) );
|
|
REGION_INTERSECT( pGC->pScreen, region, drawRegion, transClip );
|
|
|
|
/*
|
|
* For each rectangle in the clip region, set the HP-GL/2 "input
|
|
* window" and render the collection of arcs to it.
|
|
*/
|
|
pbox = REGION_RECTS( region );
|
|
nbox = REGION_NUM_RECTS( region );
|
|
|
|
PclSendData(outFile, pConPriv, pbox, nbox, ratio);
|
|
|
|
/*
|
|
* Restore the coordinate system
|
|
*/
|
|
sprintf( t, "\033%%0BSC%d,%d,%d,%d;\033%%0A", repro.x,
|
|
repro.x + repro.width, repro.y + repro.height,
|
|
repro.y );
|
|
SEND_PCL( outFile, t );
|
|
|
|
/*
|
|
* Clean up the temporary regions
|
|
*/
|
|
REGION_DESTROY( pGC->pScreen, drawRegion );
|
|
REGION_DESTROY( pGC->pScreen, region );
|
|
REGION_DESTROY( pGC->pScreen, transClip );
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Draw a simple non-filled arc, centered on the origin and starting
|
|
* at the given point.
|
|
*/
|
|
static void
|
|
DrawArc(FILE *outFile,
|
|
PclContextPrivPtr pConPriv,
|
|
double X,
|
|
double Y,
|
|
xArc A)
|
|
{
|
|
char t[80];
|
|
|
|
sprintf( t, "PU%d,%d;PD;AA0,0,%.2f;", (int)X, (int)Y,
|
|
(float)A.angle2 / -64.0 );
|
|
SAVE_PCL(outFile, pConPriv, t);
|
|
}
|
|
|
|
void
|
|
PclPolyArc(
|
|
DrawablePtr pDrawable,
|
|
GCPtr pGC,
|
|
int nArcs,
|
|
xArc *pArcs)
|
|
{
|
|
PclDoArc( pDrawable, pGC, nArcs, pArcs, DrawArc );
|
|
}
|
|
|
|
/*
|
|
* Draw a filled wedge, from the origin, to the given point, through
|
|
* the appropriate angle, and back to the origin.
|
|
*/
|
|
static void
|
|
DoWedge(FILE *outFile,
|
|
PclContextPrivPtr pConPriv,
|
|
double X,
|
|
double Y,
|
|
xArc A)
|
|
{
|
|
char t[80];
|
|
|
|
sprintf( t, "PU0,0;WG%.2f,%.2f,%.2f;", sqrt( X * X + Y * Y ),
|
|
(float)A.angle1 / -64.0,
|
|
(float)A.angle2 / -64.0 );
|
|
SAVE_PCL(outFile, pConPriv, t);
|
|
}
|
|
|
|
static void
|
|
DoChord(FILE *outFile,
|
|
PclContextPrivPtr pConPriv,
|
|
double X,
|
|
double Y,
|
|
xArc A)
|
|
{
|
|
char t[80];
|
|
|
|
sprintf( t, "PU%d,%d;PM0;AA0,0,%.2f;PA%d,%d;PM2;FP;", (int)X, (int)Y,
|
|
(float)A.angle2 / -64.0 , (int)X, (int)Y );
|
|
SAVE_PCL(outFile, pConPriv, t);
|
|
}
|
|
|
|
|
|
void
|
|
PclPolyFillArc(
|
|
DrawablePtr pDrawable,
|
|
GCPtr pGC,
|
|
int nArcs,
|
|
xArc *pArcs)
|
|
{
|
|
switch( pGC->arcMode )
|
|
{
|
|
case ArcChord:
|
|
PclDoArc( pDrawable, pGC, nArcs, pArcs, DoChord );
|
|
break;
|
|
case ArcPieSlice:
|
|
PclDoArc( pDrawable, pGC, nArcs, pArcs, DoWedge );
|
|
break;
|
|
}
|
|
}
|