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Diffstat (limited to 'filter/hpgl-vector.c')
| -rw-r--r-- | filter/hpgl-vector.c | 773 |
1 files changed, 0 insertions, 773 deletions
diff --git a/filter/hpgl-vector.c b/filter/hpgl-vector.c deleted file mode 100644 index fdf8664a4..000000000 --- a/filter/hpgl-vector.c +++ /dev/null @@ -1,773 +0,0 @@ -/* - * "$Id: hpgl-vector.c 6649 2007-07-11 21:46:42Z mike $" - * - * HP-GL/2 vector routines for the Common UNIX Printing System (CUPS). - * - * Copyright 2007-2008 by Apple Inc. - * Copyright 1993-2007 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: - * - * AA_arc_absolute() - Draw an arc. - * AR_arc_relative() - Draw an arc relative to the current pen - * AT_arc_absolute3() - Draw an arc using 3 points. - * CI_circle() - Draw a circle. - * PA_plot_absolute() - Plot a line using absolute coordinates. - * PD_pen_down() - Start drawing. - * PE_polygon_encoded() - Draw an encoded polyline. - * PR_plot_relative() - Plot a line using relative coordinates. - * PU_pen_up() - Stop drawing. - * RT_arc_relative3() - Draw an arc through 3 points relative to the - * decode_number() - Decode an encoded number. - * plot_points() - Plot the specified points. - */ - -/* - * Include necessary headers... - */ - -#include "hpgltops.h" - - -/* - * Local functions... - */ - -static double decode_number(unsigned char **, int, double); -static void plot_points(int, param_t *); - - -/* - * 'AA_arc_absolute()' - Draw an arc. - */ - -void -AA_arc_absolute(int num_params, /* I - Number of parameters */ - param_t *params) /* I - Parameters */ -{ - float x, y, /* Transformed coordinates */ - dx, dy; /* Distance from current pen */ - float start, end, /* Start and end angles */ - theta, /* Current angle */ - dt, /* Step between points */ - radius; /* Radius of arc */ - - - if (num_params < 3) - 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]; - - dx = PenPosition[0] - x; - dy = PenPosition[1] - y; - - start = (float)(180.0 * atan2(dy, dx) / M_PI); - if (start < 0.0) - start += 360.0f; - - end = start + params[2].value.number; - radius = (float)hypot(dx, dy); - - if (PenDown) - { - if (num_params > 3 && params[3].value.number > 0.0) - 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) - { - PenPosition[0] = (float)(x + radius * cos(M_PI * theta / 180.0)); - PenPosition[1] = (float)(y + radius * sin(M_PI * theta / 180.0)); - - Outputf("%.3f %.3f LI\n", PenPosition[0], PenPosition[1]); - } - else - for (theta = start - dt; theta > end; theta -= dt) - { - PenPosition[0] = (float)(x + radius * cos(M_PI * theta / 180.0)); - PenPosition[1] = (float)(y + radius * sin(M_PI * theta / 180.0)); - - Outputf("%.3f %.3f LI\n", PenPosition[0], PenPosition[1]); - } - } - - PenPosition[0] = (float)(x + radius * cos(M_PI * end / 180.0)); - PenPosition[1] = (float)(y + radius * sin(M_PI * end / 180.0)); - - if (PenDown) - { - Outputf("%.3f %.3f LI\n", PenPosition[0], PenPosition[1]); - - if (!PolygonMode) - Outputf("ST\n"); - } -} - - -/* - * 'AR_arc_relative()' - Draw an arc relative to the current pen - * position. - */ - -void -AR_arc_relative(int num_params, /* I - Number of parameters */ - param_t *params) /* I - Parameters */ -{ - float x, y, /* Transformed coordinates */ - dx, dy; /* Distance from current pen */ - float start, end, /* Start and end angles */ - theta, /* Current angle */ - dt, /* Step between points */ - radius; /* Radius of arc */ - - - if (num_params < 3) - 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]; - - dx = PenPosition[0] - x; - dy = PenPosition[1] - y; - - start = (float)(180.0 * atan2(dy, dx) / M_PI); - if (start < 0.0) - start += 360.0f; - - end = start + params[2].value.number; - radius = (float)hypot(dx, dy); - - if (PenDown) - { - if (num_params > 3 && params[3].value.number > 0.0) - 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) - { - PenPosition[0] = (float)(x + radius * cos(M_PI * theta / 180.0)); - PenPosition[1] = (float)(y + radius * sin(M_PI * theta / 180.0)); - - Outputf("%.3f %.3f LI\n", PenPosition[0], PenPosition[1]); - } - else - for (theta = start - dt; theta > end; theta -= dt) - { - PenPosition[0] = (float)(x + radius * cos(M_PI * theta / 180.0)); - PenPosition[1] = (float)(y + radius * sin(M_PI * theta / 180.0)); - - Outputf("%.3f %.3f LI\n", PenPosition[0], PenPosition[1]); - } - } - - PenPosition[0] = (float)(x + radius * cos(M_PI * end / 180.0)); - PenPosition[1] = (float)(y + radius * sin(M_PI * end / 180.0)); - - if (PenDown) - { - Outputf("%.3f %.3f LI\n", PenPosition[0], PenPosition[1]); - - if (!PolygonMode) - Outputf("ST\n"); - } -} - - -/* - * 'AT_arc_absolute3()' - Draw an arc using 3 points. - * - * Note: - * - * Currently this only draws two line segments through the - * specified points. - */ - -void -AT_arc_absolute3(int num_params, /* I - Number of parameters */ - param_t *params) /* I - Parameters */ -{ - if (num_params < 4) - return; - - if (PenDown) - { - if (!PolygonMode) - Outputf("MP\n"); - - PenValid = 1; - - Outputf("%.3f %.3f MO\n", PenPosition[0], PenPosition[1]); - - PenPosition[0] = Transform[0][0] * params[0].value.number + - Transform[0][1] * params[1].value.number + - Transform[0][2]; - PenPosition[1] = Transform[1][0] * params[0].value.number + - Transform[1][1] * params[1].value.number + - Transform[1][2]; - - Outputf("%.3f %.3f LI\n", PenPosition[0], PenPosition[1]); - } - - PenPosition[0] = Transform[0][0] * params[2].value.number + - Transform[0][1] * params[3].value.number + - Transform[0][2]; - PenPosition[1] = Transform[1][0] * params[2].value.number + - Transform[1][1] * params[3].value.number + - Transform[1][2]; - - if (PenDown) - { - Outputf("%.3f %.3f LI\n", PenPosition[0], PenPosition[1]); - - if (!PolygonMode) - Outputf("ST\n"); - } -} - - -/* - * 'CI_circle()' - Draw a circle. - */ - -void -CI_circle(int num_params, /* I - Number of parameters */ - param_t *params) /* I - Parameters */ -{ - float x, y; /* Transformed coordinates */ - float theta, /* Current angle */ - dt, /* Step between points */ - radius; /* Radius of circle */ - - - if (num_params < 1) - return; - - if (!PenDown) - return; - - radius = params[0].value.number; - - if (num_params > 1) - dt = (float)fabs(params[1].value.number); - else - dt = 5.0; - - if (!PolygonMode) - Outputf("MP\n"); - - PenValid = 1; - - for (theta = 0.0; theta < 360.0; 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 %s\n", x, y, theta == 0.0 ? "MO" : "LI"); - } - - Outputf("CP\n"); - if (!PolygonMode) - Outputf("ST\n"); -} - - -/* - * 'PA_plot_absolute()' - Plot a line using absolute coordinates. - */ - -void -PA_plot_absolute(int num_params, /* I - Number of parameters */ - param_t *params) /* I - Parameters */ -{ - PenMotion = 0; - - if (num_params > 1) - plot_points(num_params, params); -} - - -/* - * 'PD_pen_down()' - Start drawing. - */ - -void -PD_pen_down(int num_params, /* I - Number of parameters */ - param_t *params) /* I - Parameters */ -{ - PenDown = 1; - - if (num_params > 1) - plot_points(num_params, params); -} - - -/* - * 'PE_polygon_encoded()' - Draw an encoded polyline. - */ - -void -PE_polyline_encoded(int num_params, /* I - Number of parameters */ - param_t *params) /* I - Parameters */ -{ - unsigned char *s; /* Pointer into string */ - int temp, /* Temporary value */ - base_bits, /* Data bits per byte */ - draw, /* Draw or move */ - abscoords; /* Use absolute coordinates */ - double tx, ty, /* Transformed coordinates */ - x, y, /* Raw coordinates */ - frac_bits; /* Multiplier for encoded number */ - - - base_bits = 6; - frac_bits = 1.0; - draw = PenDown; - abscoords = 0; - - if (num_params == 0) - return; - - if (!PolygonMode) - { - Outputf("MP\n"); - PenValid = 0; - } - - if (!PenValid) - { - Outputf("%.3f %.3f MO\n", PenPosition[0], PenPosition[1]); - PenValid = 1; - } - - for (s = (unsigned char *)params[0].value.string; *s != '\0';) - switch (*s) - { - case '7' : - s ++; - base_bits = 5; - -#ifdef DEBUG - fputs("DEBUG: 7-bit\n", stderr); -#endif /* DEBUG */ - - Outputf("%% PE: 7-bit\n"); - break; - case ':' : /* Select pen */ - s ++; - temp = (int)decode_number(&s, base_bits, 1.0) - 1; - if (temp < 0 || temp >= PenCount) - { - fprintf(stderr, "DEBUG: Bad pen number %d in PE\n", temp + 1); - return; - } - - PenNumber = temp; - -#ifdef DEBUG - fprintf(stderr, "DEBUG: set pen #%d\n", PenNumber + 1); -#endif /* DEBUG */ - - Outputf("%% PE: set pen #%d\n", PenNumber + 1); - - if (PageDirty) - printf("%.3f %.3f %.3f %.2f SP\n", Pens[PenNumber].rgb[0], - Pens[PenNumber].rgb[1], Pens[PenNumber].rgb[2], - Pens[PenNumber].width * PenScaling); - break; - case '<' : /* Next coords are a move-to */ - draw = 0; - s ++; - -#ifdef DEBUG - fputs("DEBUG: moveto\n", stderr); -#endif /* DEBUG */ - - Outputf("%% PE: moveto\n"); - break; - case '>' : /* Set fractional bits */ - s ++; - temp = (int)decode_number(&s, base_bits, 1.0); - frac_bits = 1.0 / (1 << temp); - -#ifdef DEBUG - fprintf(stderr, "DEBUG: set fractional bits %d\n", temp); -#endif /* DEBUG */ - - Outputf("%% PE: set fractional bits %d\n", temp); - break; - case '=' : /* Next coords are absolute */ - s ++; - abscoords = 1; - -#ifdef DEBUG - fputs("DEBUG: absolute\n", stderr); -#endif /* DEBUG */ - - Outputf("%% PE: absolute\n"); - break; - default : - if (*s >= 63) - { - /* - * Coordinate... - */ - - x = decode_number(&s, base_bits, frac_bits); - y = decode_number(&s, base_bits, frac_bits); - -#ifdef DEBUG - fprintf(stderr, "DEBUG: coords %.3f %.3f\n", x, y); -#endif /* DEBUG */ - - Outputf("%% PE: coords %.3f %.3f\n", x, y); - - if (abscoords) - { - tx = Transform[0][0] * x + Transform[0][1] * y + - Transform[0][2]; - ty = Transform[1][0] * x + Transform[1][1] * y + - Transform[1][2]; - } - else if (x == 0.0 && y == 0.0) - { - draw = 1; - continue; - } - else - { - tx = Transform[0][0] * x + Transform[0][1] * y + - PenPosition[0]; - ty = Transform[1][0] * x + Transform[1][1] * y + - PenPosition[1]; - } - - if (draw) - { - if (fabs(PenPosition[0] - tx) > 0.001 || - fabs(PenPosition[1] - ty) > 0.001) - Outputf("%.3f %.3f LI\n", tx, ty); - } - else - Outputf("%.3f %.3f MO\n", tx, ty); - - PenPosition[0] = (float)tx; - PenPosition[1] = (float)ty; - - draw = 1; - abscoords = 0; - } - else - { - /* - * Junk - ignore... - */ - - if (*s != '\n' && *s != '\r') - fprintf(stderr, "WARNING: ignoring illegal PE char \'%c\'...\n", *s); - s ++; - } - break; - } - - if (!PolygonMode) - Outputf("ST\n"); -} - - -/* - * 'PR_plot_relative()' - Plot a line using relative coordinates. - */ - -void -PR_plot_relative(int num_params, /* I - Number of parameters */ - param_t *params) /* I - Parameters */ -{ - PenMotion = 1; - - if (num_params > 1) - plot_points(num_params, params); -} - - -/* - * 'PU_pen_up()' - Stop drawing. - */ - -void -PU_pen_up(int num_params, /* I - Number of parameters */ - param_t *params) /* I - Parameters */ -{ - PenDown = 0; - - if (num_params > 1) - plot_points(num_params, params); -} - - -/* - * 'RT_arc_relative3()' - Draw an arc through 3 points relative to the - * current pen position. - * - * Note: - * - * This currently only draws two line segments through the specified - * points. - */ - -void -RT_arc_relative3(int num_params, /* I - Number of parameters */ - param_t *params) /* I - Parameters */ -{ - if (num_params < 4) - return; - - if (PenDown) - { - if (!PolygonMode) - Outputf("MP\n"); - - PenValid = 1; - - Outputf("%.3f %.3f MO\n", PenPosition[0], PenPosition[1]); - - PenPosition[0] = Transform[0][0] * params[0].value.number + - Transform[0][1] * params[1].value.number + - PenPosition[0]; - PenPosition[1] = Transform[1][0] * params[0].value.number + - Transform[1][1] * params[1].value.number + - PenPosition[1]; - - Outputf("%.3f %.3f LI\n", PenPosition[0], PenPosition[1]); - } - - PenPosition[0] = Transform[0][0] * params[2].value.number + - Transform[0][1] * params[3].value.number + - PenPosition[0]; - PenPosition[1] = Transform[1][0] * params[2].value.number + - Transform[1][1] * params[3].value.number + - PenPosition[1]; - - if (PenDown) - { - Outputf("%.3f %.3f LI\n", PenPosition[0], PenPosition[1]); - - if (!PolygonMode) - Outputf("ST\n"); - } -} - - -/* - * 'decode_number()' - Decode an encoded number. - */ - -static double /* O - Value */ -decode_number(unsigned char **s, /* IO - String to decode */ - int base_bits, /* I - Number of data bits per byte */ - double frac_bits) /* I - Multiplier for fractional data */ -{ - double temp, /* Current value */ - shift; /* Multiplier */ - int sign; /* Sign of result */ - - - sign = 0; - - if (base_bits == 5) - { - for (temp = 0.0, shift = frac_bits * 0.5; **s != '\0'; (*s) ++) - if (**s >= 95 && **s < 127) - { - if (sign == 0) - { - if ((**s - 95) & 1) - sign = -1; - else - sign = 1; - - temp += ((**s - 95) & ~1) * shift; - } - else - temp += (**s - 95) * shift; - break; - } - else if (**s < 63) - { - if (**s != '\r' && **s != '\n') - fprintf(stderr, "DEBUG: Bad PE character 0x%02X!\n", **s); - - continue; - } - else - { - if (sign == 0) - { - if ((**s - 63) & 1) - sign = -1; - else - sign = 1; - - temp += ((**s - 63) & ~1) * shift; - } - else - temp += (**s - 63) * shift; - - shift *= 32.0; - } - } - else - { - for (temp = 0.0, shift = frac_bits * 0.5; **s != '\0'; (*s) ++) - if (**s >= 191 && **s < 255) - { - if (sign == 0) - { - if ((**s - 191) & 1) - sign = -1; - else - sign = 1; - - temp += ((**s - 191) & ~1) * shift; - } - else - temp += (**s - 191) * shift; - break; - } - else if (**s < 63) - { - if (**s != '\r' && **s != '\n') - fprintf(stderr, "DEBUG: Bad PE character 0x%02X!\n", **s); - - continue; - } - else - { - if (sign == 0) - { - if ((**s - 63) & 1) - sign = -1; - else - sign = 1; - - temp += ((**s - 63) & ~1) * shift; - } - else - temp += (**s - 63) * shift; - - shift *= 64.0; - } - } - - (*s) ++; - - return (temp * sign); -} - - -/* - * 'plot_points()' - Plot the specified points. - */ - -static void -plot_points(int num_params, /* I - Number of parameters */ - param_t *params) /* I - Parameters */ -{ - int i; /* Looping var */ - float x, y; /* Transformed coordinates */ - - - if (PenDown) - { - if (!PolygonMode) - { - Outputf("MP\n"); - Outputf("%.3f %.3f MO\n", PenPosition[0], PenPosition[1]); - - PenValid = 1; - } - } - - for (i = 0; i < num_params; i += 2) - { - if (PenMotion == 0) - { - x = Transform[0][0] * params[i + 0].value.number + - Transform[0][1] * params[i + 1].value.number + - Transform[0][2]; - y = Transform[1][0] * params[i + 0].value.number + - Transform[1][1] * params[i + 1].value.number + - Transform[1][2]; - } - else - { - x = Transform[0][0] * params[i + 0].value.number + - Transform[0][1] * params[i + 1].value.number + - PenPosition[0]; - y = Transform[1][0] * params[i + 0].value.number + - Transform[1][1] * params[i + 1].value.number + - PenPosition[1]; - } - - if (PenDown) - { - if (PolygonMode && i == 0) - Outputf("%.3f %.3f MO\n", x, y); - else if (fabs(PenPosition[0] - x) > 0.001 || - fabs(PenPosition[1] - y) > 0.001) - Outputf("%.3f %.3f LI\n", x, y); - } - - PenPosition[0] = x; - PenPosition[1] = y; - } - - if (PenDown) - { - if (!PolygonMode) - Outputf("ST\n"); - } -} - - -/* - * End of "$Id: hpgl-vector.c 6649 2007-07-11 21:46:42Z mike $". - */ |