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/*
* "$Id: hpgl-polygon.c 6649 2007-07-11 21:46:42Z mike $"
*
* HP-GL/2 polygon routines for the Common UNIX Printing System (CUPS).
*
* Copyright 2007 by Apple Inc.
* Copyright 1993-2005 by Easy Software Products.
*
* These coded instructions, statements, and computer programs are the
* property of Apple Inc. and are protected by Federal copyright
* law. Distribution and use rights are outlined in the file "LICENSE.txt"
* which should have been included with this file. If this file is
* file is missing or damaged, see the license at "http://www.cups.org/".
*
* This file is subject to the Apple OS-Developed Software exception.
*
* Contents:
*
* EA_edge_rect_absolute() - Draw a rectangle.
* EP_edge_polygon() - Stroke the edges of a polygon.
* ER_edge_rect_relative() - Draw a rectangle relative to the current
* EW_edge_wedge() - Draw a pie wedge.
* FP_fill_polygon() - Fill a polygon.
* PM_polygon_mode() - Set the polygon drawing mode.
* RA_fill_rect_absolute() - Fill a rectangle.
* RR_fill_rect_relative() - Fill a rectangle relative to the current
* WG_fill_wedge() - Fill a pie wedge.
*/
/*
* Include necessary headers...
*/
#include "hpgltops.h"
/*
* 'EA_edge_rect_absolute()' - Draw a rectangle.
*/
void
EA_edge_rect_absolute(int num_params, /* I - Number of parameters */
param_t *params) /* I - Parameters */
{
float x, y; /* Transformed coordinates */
if (num_params < 2)
return;
x = Transform[0][0] * params[0].value.number +
Transform[0][1] * params[1].value.number +
Transform[0][2];
y = Transform[1][0] * params[0].value.number +
Transform[1][1] * params[1].value.number +
Transform[1][2];
if (!PolygonMode)
Outputf("MP\n");
PenValid = 1;
Outputf("%.3f %.3f MO\n", PenPosition[0], PenPosition[1]);
Outputf("%.3f %.3f LI\n", PenPosition[0], y);
Outputf("%.3f %.3f LI\n", x, y);
Outputf("%.3f %.3f LI\n", x, PenPosition[1]);
Outputf("CP\n");
if (!PolygonMode)
Outputf("ST\n");
}
/*
* 'EP_edge_polygon()' - Stroke the edges of a polygon.
*/
void
EP_edge_polygon(int num_params, /* I - Number of parameters */
param_t *params) /* I - Parameters */
{
(void)num_params;
(void)params;
Outputf("ST\n");
}
/*
* 'ER_edge_rect_relative()' - Draw a rectangle relative to the current
* pen position.
*/
void
ER_edge_rect_relative(int num_params, /* I - Number of parameters */
param_t *params) /* I - Parameters */
{
float x, y; /* Transformed coordinates */
if (num_params < 2)
return;
x = Transform[0][0] * params[0].value.number +
Transform[0][1] * params[1].value.number +
PenPosition[0];
y = Transform[1][0] * params[0].value.number +
Transform[1][1] * params[1].value.number +
PenPosition[1];
if (!PolygonMode)
Outputf("MP\n");
PenValid = 1;
Outputf("%.3f %.3f MO\n", PenPosition[0], PenPosition[1]);
Outputf("%.3f %.3f LI\n", PenPosition[0], y);
Outputf("%.3f %.3f LI\n", x, y);
Outputf("%.3f %.3f LI\n", x, PenPosition[1]);
Outputf("CP\n");
if (!PolygonMode)
Outputf("ST\n");
}
/*
* 'EW_edge_wedge()' - Draw a pie wedge.
*/
void
EW_edge_wedge(int num_params, /* I - Number of parameters */
param_t *params) /* I - Parameters */
{
float x, y; /* Transformed coordinates */
float start, end, /* Start and end of arc */
theta, /* Current angle */
dt, /* Step between points */
radius; /* Radius of arc */
if (num_params < 3)
return;
radius = params[0].value.number;
start = params[1].value.number;
end = start + params[2].value.number;
if (num_params > 3)
dt = (float)fabs(params[3].value.number);
else
dt = 5.0f;
if (!PolygonMode)
Outputf("MP\n");
PenValid = 1;
Outputf("%.3f %.3f MO\n", PenPosition[0], PenPosition[1]);
if (start < end)
for (theta = start + dt; theta < end; theta += dt)
{
x = (float)(PenPosition[0] +
radius * cos(M_PI * theta / 180.0) * Transform[0][0] +
radius * sin(M_PI * theta / 180.0) * Transform[0][1]);
y = (float)(PenPosition[1] +
radius * cos(M_PI * theta / 180.0) * Transform[1][0] +
radius * sin(M_PI * theta / 180.0) * Transform[1][1]);
Outputf("%.3f %.3f LI\n", x, y);
}
else
for (theta = start - dt; theta > end; theta -= dt)
{
x = (float)(PenPosition[0] +
radius * cos(M_PI * theta / 180.0) * Transform[0][0] +
radius * sin(M_PI * theta / 180.0) * Transform[0][1]);
y = (float)(PenPosition[1] +
radius * cos(M_PI * theta / 180.0) * Transform[1][0] +
radius * sin(M_PI * theta / 180.0) * Transform[1][1]);
Outputf("%.3f %.3f LI\n", x, y);
}
x = (float)(PenPosition[0] +
radius * cos(M_PI * end / 180.0) * Transform[0][0] +
radius * sin(M_PI * end / 180.0) * Transform[0][1]);
y = (float)(PenPosition[1] +
radius * cos(M_PI * end / 180.0) * Transform[1][0] +
radius * sin(M_PI * end / 180.0) * Transform[1][1]);
Outputf("%.3f %.3f LI\n", x, y);
Outputf("CP\n");
if (!PolygonMode)
Outputf("ST\n");
}
/*
* 'FP_fill_polygon()' - Fill a polygon.
*/
void
FP_fill_polygon(int num_params, /* I - Number of parameters */
param_t *params) /* I - Parameters */
{
(void)num_params;
(void)params;
Outputf("FI\n");
}
/*
* 'PM_polygon_mode()' - Set the polygon drawing mode.
*/
void
PM_polygon_mode(int num_params, /* I - Number of parameters */
param_t *params) /* I - Parameters */
{
if (num_params == 0 ||
params[0].value.number == 0)
{
Outputf("MP\n");
PenValid = 0;
PolygonMode = 1;
}
else if (params[0].value.number == 2)
PolygonMode = 0;
}
/*
* 'RA_fill_rect_absolute()' - Fill a rectangle.
*/
void
RA_fill_rect_absolute(int num_params, /* I - Number of parameters */
param_t *params) /* I - Parameters */
{
float x, y; /* Transformed coordinates */
if (num_params < 2)
return;
x = Transform[0][0] * params[0].value.number +
Transform[0][1] * params[1].value.number +
Transform[0][2];
y = Transform[1][0] * params[0].value.number +
Transform[1][1] * params[1].value.number +
Transform[1][2];
if (!PolygonMode)
Outputf("MP\n");
PenValid = 1;
Outputf("%.3f %.3f MO\n", PenPosition[0], PenPosition[1]);
Outputf("%.3f %.3f LI\n", PenPosition[0], y);
Outputf("%.3f %.3f LI\n", x, y);
Outputf("%.3f %.3f LI\n", x, PenPosition[1]);
Outputf("CP\n");
if (!PolygonMode)
Outputf("FI\n");
}
/*
* 'RR_fill_rect_relative()' - Fill a rectangle relative to the current
* pen position.
*/
void
RR_fill_rect_relative(int num_params, /* I - Number of parameters */
param_t *params) /* I - Parameters */
{
float x, y; /* Transformed coordinates */
if (num_params < 2)
return;
x = Transform[0][0] * params[0].value.number +
Transform[0][1] * params[1].value.number +
PenPosition[0];
y = Transform[1][0] * params[0].value.number +
Transform[1][1] * params[1].value.number +
PenPosition[1];
if (!PolygonMode)
Outputf("MP\n");
PenValid = 1;
Outputf("%.3f %.3f MO\n", PenPosition[0], PenPosition[1]);
Outputf("%.3f %.3f LI\n", PenPosition[0], y);
Outputf("%.3f %.3f LI\n", x, y);
Outputf("%.3f %.3f LI\n", x, PenPosition[1]);
Outputf("CP\n");
if (!PolygonMode)
Outputf("FI\n");
}
/*
* 'WG_fill_wedge()' - Fill a pie wedge.
*/
void
WG_fill_wedge(int num_params, /* I - Number of parameters */
param_t *params) /* I - Parameters */
{
float x, y; /* Transformed coordinates */
float start, end, /* Start and end angles */
theta, /* Current angle */
dt, /* Step between points */
radius; /* Radius of arc */
if (num_params < 3)
return;
radius = params[0].value.number;
start = params[1].value.number;
end = start + params[2].value.number;
if (num_params > 3)
dt = (float)fabs(params[3].value.number);
else
dt = 5.0;
if (!PolygonMode)
Outputf("MP\n");
PenValid = 1;
Outputf("%.3f %.3f MO\n", PenPosition[0], PenPosition[1]);
if (start < end)
for (theta = start + dt; theta < end; theta += dt)
{
x = (float)(PenPosition[0] +
radius * cos(M_PI * theta / 180.0) * Transform[0][0] +
radius * sin(M_PI * theta / 180.0) * Transform[0][1]);
y = (float)(PenPosition[1] +
radius * cos(M_PI * theta / 180.0) * Transform[1][0] +
radius * sin(M_PI * theta / 180.0) * Transform[1][1]);
Outputf("%.3f %.3f LI\n", x, y);
}
else
for (theta = start - dt; theta > end; theta -= dt)
{
x = (float)(PenPosition[0] +
radius * cos(M_PI * theta / 180.0) * Transform[0][0] +
radius * sin(M_PI * theta / 180.0) * Transform[0][1]);
y = (float)(PenPosition[1] +
radius * cos(M_PI * theta / 180.0) * Transform[1][0] +
radius * sin(M_PI * theta / 180.0) * Transform[1][1]);
Outputf("%.3f %.3f LI\n", x, y);
}
x = (float)(PenPosition[0] +
radius * cos(M_PI * end / 180.0) * Transform[0][0] +
radius * sin(M_PI * end / 180.0) * Transform[0][1]);
y = (float)(PenPosition[1] +
radius * cos(M_PI * end / 180.0) * Transform[1][0] +
radius * sin(M_PI * end / 180.0) * Transform[1][1]);
Outputf("%.3f %.3f LI\n", x, y);
Outputf("CP\n");
if (!PolygonMode)
Outputf("FI\n");
}
/*
* End of "$Id: hpgl-polygon.c 6649 2007-07-11 21:46:42Z mike $".
*/
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