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gdc_pie.c
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/* GDCHART 0.11.3dev GDC_PIE.C 11 Mar 2003 */
/* Copyright Bruce Verderaime 1998-2004 */
/* ELLIPSE (angled/perspective view) */
/* TODO */
/* view on/off/%/deg option should be tied to 3d_angle? */
/* limited in two directions only - by X axis, or Y axis */
/* ELIPSEY [scaling] only one that make sense? */
/* connections between face&background (effects Y axis only?) */
/* sizing still doesn't work - DONE */
/* label distances need to be variable about the ellipse/3d_angle */
/* #define ELLIPSEX 1.00 */
/* #define ELLIPSEY 0.30 */
#define GDC_INCL
#define GDC_LIB
#include "gdc.h" /* gdc.h before system includes to pick up features */
#include <stdio.h>
#include "gdcpie.h"
/* rem circle: x = rcos(@), y = rsin(@) */
extern struct GDC_FONT_T GDC_fontc[];
#define SET_RECT( gdp, x1, x2, y1, y2 ) gdp[0].x = gdp[3].x = x1, \
gdp[0].y = gdp[1].y = y1, \
gdp[1].x = gdp[2].x = x2, \
gdp[2].y = gdp[3].y = y2
#define PX( x ) ( cx + (int)( ((float)rad*ellipsex)*sin(pscl*(double)(x)) ) ) /* expects a val */
#define PY( x ) ( cy - (int)( ((float)rad*ellipsey)*cos(pscl*(double)(x)) ) ) /* expects a val */
#define CX( i,d ) ( cx + \
(d? xdepth_3D: 0) + \
(int)( (double)(GDCPIE_explode?GDCPIE_explode[(i)]:0) * sin((double)(slice_angle[0][i])) ) )
#define CY( i,d ) ( cy - \
(d? ydepth_3D: 0) - \
(int)( (double)(GDCPIE_explode?GDCPIE_explode[(i)]:0) * cos((double)(slice_angle[0][i])) ) )
/* expect slice number: i (index into slice_angle array) *\
* and position on slice: f (0: slice middle, *
* 1: leading (clockwise), *
* 2: trailing edge) *
* and 3D depth: d (0: do depth, *
* 1: no depth adjustment) *
\* adjusts for explosion */
#define IX( i,f,d ) ( CX(i,d) + (int)( (double)rad*ellipsex * sin((double)(slice_angle[f][i])) ) )
#define IY( i,f,d ) ( CY(i,d) - (int)( (double)rad*ellipsey * cos((double)(slice_angle[f][i])) ) )
/* same as above except o is angle */
#define OX( i,o,d ) ( CX(i,d) + (int)( (double)rad*ellipsex * sin((double)(o)) ) )
#define OY( i,o,d ) ( CY(i,d) - (int)( (double)rad*ellipsey * cos((double)(o)) ) )
#define TO_INT_DEG(o) (int)rint( (double)((o)/(2.0*M_PI)*360.0) )
#define TO_INT_DEG_FLOOR(o) (int)floor( (double)((o)/(2.0*M_PI)*360.0) )
#define TO_INT_DEG_CEIL(o) (int)ceil( (double)((o)/(2.0*M_PI)*360.0) )
#define TO_RAD(o) ( (o)/360.0*(2.0*M_PI) )
/* assume !> 4*PI */
#define MOD_2PI(o) ( (o)>=(2.0*M_PI)? ((o)-(2.0*M_PI)): (((o)<0)? ((o)+(2.0*M_PI)): (o)) )
#define MOD_360(o) ( (o)>=360? (o)-360: (o) ) /* assume !> 720 */
struct tmp_slice_t { int i; /* original index */
char hidden; /* 'behind' top [3D] pie */
float angle; /* radian */
float slice; }; /* radian */
static float pie_3D_rad; /* user requested 3D angle in radians */
/* degrees (radians) between angle a, and depth angle */
/* 1&2, so comparisons can be done. */
#define RAD_DIST1( a ) ( (dist_foo1=ABS(((a>-.00001&&a<.00001)?0.00001:a)-pie_3D_rad)), ((dist_foo1>M_PI)? ABS(dist_foo1-2.0*M_PI): dist_foo1) )
#define RAD_DIST2( a ) ( (dist_foo2=ABS(((a>-.00001&&a<.00001)?0.00001:a)-pie_3D_rad)), ((dist_foo2>M_PI)? ABS(dist_foo2-2.0*M_PI): dist_foo2) )
static float dist_foo1, dist_foo2;
/* ------------------------------------------------------- *\
* oof! cleaner way???
* order by angle opposite (180) of depth angle
* comparing across 0-360 line
\* ------------------------------------------------------- */
static int
ocmpr( struct tmp_slice_t *a,
struct tmp_slice_t *b )
{
if( RAD_DIST1(a->angle) < RAD_DIST2(b->angle) )
return 1;
if( RAD_DIST1(a->angle) > RAD_DIST2(b->angle) )
return -1;
/* a tie (will happen between each slice) */
/* are we within pie_3D_rad */
if( (a->angle < pie_3D_rad) && (pie_3D_rad < a->slice) ||
(a->slice < pie_3D_rad) && (pie_3D_rad < a->angle) )
return 1;
if( (b->slice < pie_3D_rad) && (pie_3D_rad < b->angle) ||
(b->angle < pie_3D_rad) && (pie_3D_rad < b->slice) )
return -1;
/* let slice angle decide */
if( RAD_DIST1(a->slice) < RAD_DIST2(b->slice) )
return 1;
if( RAD_DIST1(a->slice) > RAD_DIST2(b->slice) )
return -1;
return 0;
}
/* ======================================================= *\
* PIE
*
* Notes:
* always drawn from 12:00 position clockwise
* 'missing' slices don't get labels
* sum(val[0], ... val[num_points-1]) is assumed to be 100%
\* ======================================================= */
void
GDC_out_pie( short IMGWIDTH,
short IMGHEIGHT,
FILE *img_fptr, /* open file pointer */
GDCPIE_TYPE type,
int num_points,
char *lbl[], /* data labels */
float val[] ) /* data */
{
int i;
gdImagePtr im;
int BGColor,
LineColor,
PlotColor,
EdgeColor,
EdgeColorShd;
CREATE_ARRAY1( SliceColor, int, num_points ); /* int SliceColor[num_points] */
CREATE_ARRAY1( SliceColorShd, int, num_points ); /* int SliceColorShd[num_points] */
float rad = 0.0; /* radius */
float ellipsex = 1.0;
float ellipsey = 1.0 - (float)GDCPIE_perspective/100.0;
float tot_val = 0.0;
float pscl;
int cx, /* affects PX() */
cy; /* affects PY() */
/* ~ 1% for a size of 100 pixs */
/* label sizes will more dictate this */
float min_grphable = ( GDCPIE_other_threshold < 0?
100.0/(float)MIN(IMGWIDTH,IMGHEIGHT):
(float)GDCPIE_other_threshold )/100.0;
short num_slices1 = 0,
num_slices2 = 0;
char any_too_small = FALSE;
CREATE_ARRAY1( others, char, num_points ); /* char others[num_points] */
CREATE_ARRAY2( slice_angle, float, 3, num_points ); /* float slice_angle[3][num_points] */
/* must be used with others[] */
char threeD = ( type == GDC_3DPIE );
int xdepth_3D = 0, /* affects PX() */
ydepth_3D = 0; /* affects PY() */
int do3Dx = 0, /* reserved for macro use */
do3Dy = 0;
CREATE_ARRAY2( pct_lbl, char, num_points, 16 ); /* sizeof or strlen (GDCPIE_percent_fmt)? */
CREATE_ARRAY1( pct_ftsz, struct fnt_sz_t, num_points ); /* struct fnt_sz_t lbl_ftsz[num_points] */
CREATE_ARRAY1( lbl_ftsz, struct fnt_sz_t, num_points ); /* struct fnt_sz_t lbl_ftsz[num_points] */
#ifdef HAVE_LIBFREETYPE
char *gdcpie_title_font = GDCPIE_title_font;
char *gdcpie_label_font = GDCPIE_label_font;
double gdcpie_title_ptsize = GDCPIE_title_ptsize;
double gdcpie_label_ptsize = GDCPIE_label_ptsize;
#else
char *gdcpie_title_font = NULL;
char *gdcpie_label_font = NULL;
double gdcpie_title_ptsize = 0.0;
double gdcpie_label_ptsize = 0.0;
#endif
/* GDCPIE_3d_angle = MOD_360(90-GDCPIE_3d_angle+360); */
pie_3D_rad = TO_RAD( GDCPIE_3d_angle );
xdepth_3D = threeD? (int)( cos((double)MOD_2PI(M_PI_2-pie_3D_rad+2.0*M_PI)) * GDCPIE_3d_depth ): 0;
ydepth_3D = threeD? (int)( sin((double)MOD_2PI(M_PI_2-pie_3D_rad+2.0*M_PI)) * GDCPIE_3d_depth ): 0;
/* xdepth_3D = threeD? (int)( cos(pie_3D_rad) * GDCPIE_3d_depth ): 0; */
/* ydepth_3D = threeD? (int)( sin(pie_3D_rad) * GDCPIE_3d_depth ): 0; */
load_font_conversions();
/* ----- get total value ----- */
for( i=0; i<num_points; ++i )
tot_val += val[i];
/* ----- pie sizing ----- */
/* ----- make width room for labels, depth, etc.: ----- */
/* ----- determine pie's radius ----- */
{
int title_hgt = GDCPIE_title? 1 /* title? horizontal text line */
+ GDCfnt_sz( GDCPIE_title,
GDCPIE_title_size,
gdcpie_title_font, gdcpie_title_ptsize, 0.0, NULL ).h
+ 2:
0;
float last = 0.0;
float label_explode_limit = 0.0;
int cheight,
cwidth;
/* maximum: no labels, explosions */
/* gotta start somewhere */
rad = (float)MIN( (IMGWIDTH/2)/ellipsex-(1+ABS(xdepth_3D)), (IMGHEIGHT/2)/ellipsey-(1+ABS(ydepth_3D))-title_hgt );
/* ok fix center, i.e., no floating re labels, explosion, etc. */
cx = IMGWIDTH/2 /* - xdepth_3D */ ;
cy = (IMGHEIGHT-title_hgt)/2 + title_hgt /* + ydepth_3D */ ;
cheight = (IMGHEIGHT- title_hgt)/2 /* - ydepth_3D */ ;
cwidth = cx;
/* walk around pie. determine spacing to edge */
for( i=0; i<num_points; ++i )
{
float this_pct = val[i]/tot_val; /* should never be > 100% */
float this = this_pct*(2.0*M_PI); /* pie-portion */
if( (this_pct > min_grphable) || /* too small */
(!GDCPIE_missing || !GDCPIE_missing[i]) ) /* still want angles */
{
int this_explode = GDCPIE_explode? GDCPIE_explode[i]: 0;
double this_sin;
double this_cos;
slice_angle[0][i] = this/2.0+last; /* mid-point on full pie */
slice_angle[1][i] = last; /* 1st on full pie */
slice_angle[2][i] = this+last; /* 2nd on full pie */
this_sin = ellipsex*sin( (double)slice_angle[0][i] );
this_cos = ellipsey*cos( (double)slice_angle[0][i] );
if( !GDCPIE_missing || !(GDCPIE_missing[i]) )
{
short lbl_wdth = 0,
lbl_hgt = 0;
float this_y_explode_limit,
this_x_explode_limit;
/* start slice label height, width */
/* accounting for PCT placement, font */
pct_ftsz[i].h = 0;
pct_ftsz[i].w = 0;
if( GDCPIE_percent_fmt &&
GDCPIE_percent_labels != GDCPIE_PCT_NONE )
{
sprintf( pct_lbl[i], GDCPIE_percent_fmt, this_pct * 100.0 );
pct_ftsz[i] = GDCfnt_sz( pct_lbl[i],
GDCPIE_label_size,
gdcpie_label_font, gdcpie_label_ptsize, 0.0, NULL );
lbl_wdth = pct_ftsz[i].w;
lbl_hgt = pct_ftsz[i].h;
}
if( lbl && lbl[i] )
{
lbl_ftsz[i] = GDCfnt_sz( lbl[i],
GDCPIE_label_size,
gdcpie_label_font, gdcpie_label_ptsize, 0.0, NULL );
if( GDCPIE_percent_labels == GDCPIE_PCT_ABOVE ||
GDCPIE_percent_labels == GDCPIE_PCT_BELOW )
{
lbl_wdth = MAX( pct_ftsz[i].w, lbl_ftsz[i].w );
lbl_hgt = pct_ftsz[i].h + lbl_ftsz[i].h + 1;
}
else
if( GDCPIE_percent_labels == GDCPIE_PCT_RIGHT ||
GDCPIE_percent_labels == GDCPIE_PCT_LEFT )
{
lbl_wdth = pct_ftsz[i].w + lbl_ftsz[i].w + 1;
lbl_hgt = MAX( pct_ftsz[i].h, lbl_ftsz[i].h );
}
else /* GDCPIE_PCT_NONE */
{
lbl_wdth = lbl_ftsz[i].w;
lbl_hgt = lbl_ftsz[i].h;
}
}
else
lbl_wdth = lbl_hgt = 0;
/* end label height, width */
/* diamiter limited by this point's: explosion, label */
/* (radius to box @ slice_angle) - (explode) - (projected label size) */
/* radius constraint due to labels */
this_y_explode_limit = (float)this_cos==0.0? FLT_MAX:
( (float)( (double)cheight/ABS(this_cos) ) -
(float)( this_explode + (lbl&&lbl[i]? GDCPIE_label_dist: 0) ) -
(float)( lbl_hgt/2 ) / (float)ABS(this_cos) );
this_x_explode_limit = (float)this_sin==0.0? FLT_MAX:
( (float)( (double)cwidth/ABS(this_sin) ) -
(float)( this_explode + (lbl&&lbl[i]? GDCPIE_label_dist: 0) ) -
(float)( lbl_wdth ) / (float)ABS(this_sin) );
rad = MIN( rad, this_y_explode_limit );
rad = MIN( rad, this_x_explode_limit );
/* ok at this radius (which is most likely larger than final) */
/* adjust for inter-label spacing */
/* if( lbl[i] && *lbl[i] ) */
/* { */
/* char which_edge = slice_angle[0][i] > M_PI? +1: -1; // which semi */
/* last_label_yedge = cheight - (int)( (rad + // top or bottom of label */
/* (float)(this_explode + */
/* (float)GDCPIE_label_dist)) * (float)this_cos ) + */
/* ( (GDC_fontc[GDCPIE_label_size].h+1)/2 + */
/* GDC_label_spacing )*which_edge; */
/* } */
/* radius constriant due to exploded depth */
/* at each edge of the slice, and the middle */
/* this is really stupid */
/* this section uses a different algorithm then above, but does the same thing */
/* could be combined, but each is ugly enough! */
/* PROTECT /0 */
if( threeD )
{
short j;
int this_y_explode_pos;
int this_x_explode_pos;
/* first N E S W (actually no need for N) */
if( (slice_angle[1][i] < M_PI_2 && M_PI_2 < slice_angle[2][i]) && /* E */
(this_x_explode_pos=OX(i,M_PI_2,1)) > cx+cwidth )
rad -= (float)ABS( (double)(1+this_x_explode_pos-(cx+cwidth))/sin(M_PI_2) );
if( (slice_angle[1][i] < 3.0*M_PI_2 && 3.0*M_PI_2 < slice_angle[2][i]) && /* W */
(this_x_explode_pos=OX(i,3.0*M_PI_2,1)) < cx-cwidth )
rad -= (float)ABS( (double)(this_x_explode_pos-(cx+cwidth))/sin(3.0*M_PI_2) );
if( (slice_angle[1][i] < M_PI && M_PI < slice_angle[2][i]) && /* S */
(this_y_explode_pos=OY(i,M_PI,1)) > cy+cheight )
rad -= (float)ABS( (double)(1+this_y_explode_pos-(cy+cheight))/cos(M_PI) );
for( j=0; j<3; ++j )
{
this_y_explode_pos = IY(i,j,1);
if( this_y_explode_pos < cy-cheight )
rad -= (float)ABS( (double)((cy-cheight)-this_y_explode_pos)/cos((double)slice_angle[j][i]) );
if( this_y_explode_pos > cy+cheight )
rad -= (float)ABS( (double)(1+this_y_explode_pos-(cy+cheight))/cos((double)slice_angle[j][i]) );
this_x_explode_pos = IX(i,j,1);
if( this_x_explode_pos < cx-cwidth )
rad -= (float)ABS( (double)((cx-cwidth)-this_x_explode_pos)/sin((double)slice_angle[j][i]) );
if( this_x_explode_pos > cx+cwidth )
rad -= (float)ABS( (double)(1+this_x_explode_pos-(cx+cwidth))/sin((double)slice_angle[j][i]) );
}
}
}
others[i] = FALSE;
}
else
{
others[i] = TRUE;
slice_angle[0][i] = -FLT_MAX;
}
last += this;
}
}
/* ----- go ahead and start the image ----- */
im = gdImageCreate( IMGWIDTH, IMGHEIGHT );
/* --- allocate the requested colors --- */
BGColor = clrallocate( im, GDCPIE_BGColor );
LineColor = clrallocate( im, GDCPIE_LineColor );
PlotColor = clrallocate( im, GDCPIE_PlotColor );
if( GDCPIE_EdgeColor != GDC_NOCOLOR )
{
EdgeColor = clrallocate( im, GDCPIE_EdgeColor );
if( threeD )
EdgeColorShd = clrshdallocate( im, GDCPIE_EdgeColor );
}
/* --- set color for each slice --- */
for( i=0; i<num_points; ++i )
if( GDCPIE_Color )
{
unsigned long slc_clr = GDCPIE_Color[i];
SliceColor[i] = clrallocate( im, slc_clr );
if( threeD )
SliceColorShd[i] = clrshdallocate( im, slc_clr );
}
else
{
SliceColor[i] = PlotColor;
if( threeD )
SliceColorShd[i] = clrshdallocate( im, GDCPIE_PlotColor );
}
pscl = (2.0*M_PI)/tot_val;
/* ----- calc: smallest a slice can be ----- */
/* 1/2 circum / num slices per side. */
/* determined by number of labels that'll fit (height) */
/* scale to user values */
/* ( M_PI / (IMGHEIGHT / (SFONTHGT+1)) ) */
/* min_grphable = tot_val / */
/* ( 2.0 * (float)IMGHEIGHT / (float)(SFONTHGT+1+TFONTHGT+2) ); */
if( threeD )
{
/* draw background shaded pie */
{
float rad1 = rad * 3.0/4.0;
for( i=0; i<num_points; ++i )
if( !(others[i]) &&
(!GDCPIE_missing || !GDCPIE_missing[i]) )
{
int edge_color = GDCPIE_EdgeColor == GDC_NOCOLOR? SliceColorShd[i]:
EdgeColorShd;
gdImageLine( im, CX(i,1), CY(i,1), IX(i,1,1), IY(i,1,1), edge_color );
gdImageLine( im, CX(i,1), CY(i,1), IX(i,2,1), IY(i,2,1), edge_color );
gdImageArc( im, CX(i,1), CY(i,1),
(int)(rad*ellipsex*2.0), (int)(rad*ellipsey*2.0),
TO_INT_DEG_FLOOR(slice_angle[1][i])+270,
TO_INT_DEG_CEIL(slice_angle[2][i])+270,
edge_color );
/* gdImageFilledArc( im, CX(i,1), CY(i,1), */
/* rad*ellipsex*2, rad*ellipsey*2, */
/* TO_INT_DEG_FLOOR(slice_angle[1][i])+270, */
/* TO_INT_DEG_CEIL(slice_angle[2][i])+270, */
/* SliceColorShd[i], */
/* gdPie ); */
/* attempt to fill, if slice is wide enough */
if( (ABS(IX(i,1,1)-IX(i,2,1)) + ABS(IY(i,1,1)-IY(i,2,1))) > 2 )
{
float rad = rad1; /* local override */
gdImageFillToBorder( im, IX(i,0,1), IY(i,0,1), edge_color, SliceColorShd[i] );
}
}
}
/* fill in connection to foreground pie */
/* this is where we earn our keep */
{
int t,
num_slice_angles = 0;
CREATE_ARRAY1( tmp_slice, struct tmp_slice_t, 4*num_points+4 ); /* should only need 2*num_points+2 */
for( i=0; i<num_points; ++i )
if( !GDCPIE_missing || !GDCPIE_missing[i] )
{
if( RAD_DIST1(slice_angle[1][i]) < RAD_DIST2(slice_angle[0][i]) )
tmp_slice[num_slice_angles].hidden = FALSE;
else
tmp_slice[num_slice_angles].hidden = TRUE;
tmp_slice[num_slice_angles].i = i;
tmp_slice[num_slice_angles].slice = slice_angle[0][i];
tmp_slice[num_slice_angles++].angle = slice_angle[1][i];
if( RAD_DIST1(slice_angle[2][i]) < RAD_DIST2(slice_angle[0][i]) )
tmp_slice[num_slice_angles].hidden = FALSE;
else
tmp_slice[num_slice_angles].hidden = TRUE;
tmp_slice[num_slice_angles].i = i;
tmp_slice[num_slice_angles].slice = slice_angle[0][i];
tmp_slice[num_slice_angles++].angle = slice_angle[2][i];
/* identify which 2 slices (i) have a tangent parallel to depth angle */
if( slice_angle[1][i]<MOD_2PI(pie_3D_rad+M_PI_2) && slice_angle[2][i]>MOD_2PI(pie_3D_rad+M_PI_2) )
{
tmp_slice[num_slice_angles].i = i;
tmp_slice[num_slice_angles].hidden = FALSE;
tmp_slice[num_slice_angles].slice = slice_angle[0][i];
tmp_slice[num_slice_angles++].angle = MOD_2PI( pie_3D_rad+M_PI_2 );
}
if( slice_angle[1][i]<MOD_2PI(pie_3D_rad+3.0*M_PI_2) && slice_angle[2][i]>MOD_2PI(pie_3D_rad+3.0*M_PI_2) )
{
tmp_slice[num_slice_angles].i = i;
tmp_slice[num_slice_angles].hidden = FALSE;
tmp_slice[num_slice_angles].slice = slice_angle[0][i];
tmp_slice[num_slice_angles++].angle = MOD_2PI( pie_3D_rad+3.0*M_PI_2 );
}
}
qsort( tmp_slice, num_slice_angles, sizeof(struct tmp_slice_t), ocmpr );
for( t=0; t<num_slice_angles; ++t )
{
gdPoint gdp[4];
i = tmp_slice[t].i;
gdp[0].x = CX(i,0); gdp[0].y = CY(i,0);
gdp[1].x = CX(i,1); gdp[1].y = CY(i,1);
gdp[2].x = OX(i,tmp_slice[t].angle,1); gdp[2].y = OY(i,tmp_slice[t].angle,1);
gdp[3].x = OX(i,tmp_slice[t].angle,0); gdp[3].y = OY(i,tmp_slice[t].angle,0);
if( !(tmp_slice[t].hidden) )
gdImageFilledPolygon( im, gdp, 4, SliceColorShd[i] );
else
{
rad -= 2.0; /* no peeking */
gdp[0].x = OX(i,slice_angle[0][i],0); gdp[0].y = OY(i,slice_angle[0][i],0);
gdp[1].x = OX(i,slice_angle[0][i],1); gdp[1].y = OY(i,slice_angle[0][i],1);
rad += 2.0;
gdp[2].x = OX(i,slice_angle[1][i],1); gdp[2].y = OY(i,slice_angle[1][i],1);
gdp[3].x = OX(i,slice_angle[1][i],0); gdp[3].y = OY(i,slice_angle[1][i],0);
gdImageFilledPolygon( im, gdp, 4, SliceColorShd[i] );
gdp[2].x = OX(i,slice_angle[2][i],1); gdp[2].y = OY(i,slice_angle[2][i],1);
gdp[3].x = OX(i,slice_angle[2][i],0); gdp[3].y = OY(i,slice_angle[2][i],0);
gdImageFilledPolygon( im, gdp, 4, SliceColorShd[i] );
}
if( GDCPIE_EdgeColor != GDC_NOCOLOR )
{
gdImageLine( im, CX(i,0), CY(i,0), CX(i,1), CY(i,1), EdgeColorShd );
gdImageLine( im, OX(i,tmp_slice[t].angle,0), OY(i,tmp_slice[t].angle,0),
OX(i,tmp_slice[t].angle,1), OY(i,tmp_slice[t].angle,1),
EdgeColorShd );
}
}
FREE_ARRAY1( tmp_slice );
}
}
/* ----- pie face ----- */
{
/* float last = 0.0; */
float rad1 = rad * 3.0/4.0;
for( i=0; i<num_points; ++i )
if( !others[i] &&
(!GDCPIE_missing || !GDCPIE_missing[i]) )
{
int edge_color = GDCPIE_EdgeColor == GDC_NOCOLOR? SliceColor[i]:
EdgeColorShd;
/* last += val[i]; */
/* EXPLODE_CX_CY( slice_angle[0][i], i ); */
gdImageLine( im, CX(i,0), CY(i,0), IX(i,1,0), IY(i,1,0), edge_color );
gdImageLine( im, CX(i,0), CY(i,0), IX(i,2,0), IY(i,2,0), edge_color );
gdImageArc( im, CX(i,0), CY(i,0),
(int)(rad*ellipsex*2.0), (int)(rad*ellipsey*2.0),
(TO_INT_DEG_FLOOR(slice_angle[1][i])+270)%360,
(TO_INT_DEG_CEIL(slice_angle[2][i])+270)%360,
edge_color );
/* antialiasing here */
/* likely only on the face? */
/* bugs in gd2.0.0 */
/* arc doesn't honor deg>360 */
/* arcs from gdImageFilledArc() don't match with gdImageArc() */
/* angles are off */
/* doesn't always fill completely */
/* gdImageFilledArc( im, CX(i,0), CY(i,0), */
/* (int)(rad*ellipsex*2.0), (int)(rad*ellipsey*2.0), */
/* (TO_INT_DEG_FLOOR(slice_angle[1][i])+270)%360, */
/* (TO_INT_DEG_CEIL(slice_angle[2][i])+270)%360, */
/* SliceColor[i], */
/* gdPie ); */
/* attempt to fill, if slice is wide enough */
{
float rad = rad1; /* local override */
if( (ABS(IX(i,1,1)-IX(i,2,1)) + ABS(IY(i,1,1)-IY(i,2,1))) > 2 )
{
gdImageFillToBorder( im, IX(i,0,0), IY(i,0,0), edge_color, SliceColor[i] );
}
/* catch missed pixels on narrow slices */
gdImageLine( im, CX(i,0), CY(i,0), IX(i,0,0), IY(i,0,0), SliceColor[i] );
}
}
}
if( GDCPIE_title )
{
struct fnt_sz_t tftsz = GDCfnt_sz( GDCPIE_title,
GDCPIE_title_size,
gdcpie_title_font, gdcpie_title_ptsize, 0.0, NULL );
GDCImageStringNL( im,
&GDC_fontc[GDCPIE_title_size],
gdcpie_title_font, gdcpie_title_ptsize,
0.0,
IMGWIDTH/2 - tftsz.w/2,
1,
GDCPIE_title,
LineColor,
GDC_JUSTIFY_CENTER,
NULL );
}
/* labels */
if( lbl )
{
float liner = rad;
rad += GDCPIE_label_dist;
for( i=0; i<num_points; ++i )
{
if( !others[i] &&
(!GDCPIE_missing || !GDCPIE_missing[i]) )
{
int lblx, pctx,
lbly, pcty,
linex, liney;
lbly = (liney = IY(i,0,0))-lbl_ftsz[i].h / 2;
lblx = pctx = linex = IX(i,0,0);
if( slice_angle[0][i] > M_PI ) /* which semicircle */
{
lblx -= lbl_ftsz[i].w;
pctx = lblx;
++linex;
}
else
--linex;
switch( GDCPIE_percent_labels )
{
case GDCPIE_PCT_LEFT: if( slice_angle[0][i] > M_PI )
pctx -= lbl_ftsz[i].w-1;
else
lblx += pct_ftsz[i].w+1;
pcty = IY(i,0,0) - ( 1+pct_ftsz[i].h ) / 2;
break;
case GDCPIE_PCT_RIGHT: if( slice_angle[0][i] > M_PI )
lblx -= pct_ftsz[i].w-1;
else
pctx += lbl_ftsz[i].w+1;
pcty = IY(i,0,0) - ( 1+pct_ftsz[i].h ) / 2;
break;
case GDCPIE_PCT_ABOVE: lbly += (1+pct_ftsz[i].h) / 2;
pcty = lbly - pct_ftsz[i].h;
break;
case GDCPIE_PCT_BELOW: lbly -= (1+pct_ftsz[i].h) / 2;
pcty = lbly + lbl_ftsz[i].h;
break;
case GDCPIE_PCT_NONE:
default:;
}
if( GDCPIE_percent_labels != GDCPIE_PCT_NONE )
GDCImageStringNL( im,
&GDC_fontc[GDCPIE_label_size],
gdcpie_label_font, gdcpie_label_ptsize,
0.0,
slice_angle[0][i] <= M_PI? pctx:
pctx+lbl_ftsz[i].w-pct_ftsz[i].w,
pcty,
pct_lbl[i],
LineColor,
GDC_JUSTIFY_CENTER,
NULL );
if( lbl[i] )
GDCImageStringNL( im,
&GDC_fontc[GDCPIE_label_size],
gdcpie_label_font, gdcpie_label_ptsize,
0.0,
lblx,
lbly,
lbl[i],
LineColor,
slice_angle[0][i] <= M_PI? GDC_JUSTIFY_LEFT:
GDC_JUSTIFY_RIGHT,
NULL );
if( GDCPIE_label_line )
{
float rad = liner;
gdImageLine( im, linex, liney, IX(i,0,0), IY(i,0,0), LineColor );
}
}
}
rad -= GDCPIE_label_dist;
}
fflush( img_fptr );
switch( GDC_image_type )
{
#ifdef HAVE_JPEG
case GDC_JPEG: gdImageJpeg( im, img_fptr, GDC_jpeg_quality ); break;
#endif
case GDC_WBMP: gdImageWBMP( im, PlotColor, img_fptr ); break;
case GDC_GIF: gdImageGif( im, img_fptr); break;
case GDC_PNG:
default: gdImagePng( im, img_fptr );
}
FREE_ARRAY1( lbl_ftsz );
FREE_ARRAY1( pct_ftsz );
FREE_ARRAY2( pct_lbl );
FREE_ARRAY2( slice_angle );
FREE_ARRAY1( others );
FREE_ARRAY1( SliceColorShd );
FREE_ARRAY1( SliceColor );
gdImageDestroy(im);
return;
}