gnuplot-old/src/graph3d.c at pm3d · gnuplot/gnuplot-old · GitHub

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#ifndef lint

static char *RCSid() { return RCSid("$Id: graph3d.c,v 1.23.2.8 2000/10/23 18:57:54 joze Exp $"); }

#endif

/* GNUPLOT - graph3d.c */

/*[

* Permission to use, copy, and distribute this software and its

* documentation for any purpose with or without fee is hereby granted,

* provided that the above copyright notice appear in all copies and

* that both that copyright notice and this permission notice appear

* in supporting documentation.

* Permission to modify the software is granted, but not the right to

* distribute the complete modified source code. Modifications are to

* be distributed as patches to the released version. Permission to

* distribute binaries produced by compiling modified sources is granted,

* provided you

* 1. distribute the corresponding source modifications from the

* released version in the form of a patch file along with the binaries,

* 2. add special version identification to distinguish your version

* in addition to the base release version number,

* 3. provide your name and address as the primary contact for the

* support of your modified version, and

* 4. retain our contact information in regard to use of the base

* software.

* Permission to distribute the released version of the source code along

* with corresponding source modifications in the form of a patch file is

* granted with same provisions 2 through 4 for binary distributions.

* This software is provided "as is" without express or implied warranty

* to the extent permitted by applicable law.

]*/

* AUTHORS

* Original Software:

* Gershon Elber and many others.

* 19 September 1992 Lawrence Crowl (crowl@cs.orst.edu)

* Added user-specified bases for log scaling.

* 3.6 - split graph3d.c into graph3d.c (graph),

* util3d.c (intersections, etc)

* hidden3d.c (hidden-line removal code)

#include "graph3d.h"

#include "alloc.h"

#include "graphics.h"

#include "hidden3d.h"

#include "misc.h"

#include "setshow.h"

#include "term_api.h"

#include "util3d.h"

#include "util.h"

#ifdef PM3D

# include "pm3d.h"

# include "color.h"

#endif

static int p_height;

static int p_width; /* pointsize * t->h_tic */

static int key_entry_height; /* bigger of t->v_size, pointsize*t->v_tick */

int suppressMove = 0; /* to prevent moveto while drawing contours */

* hidden_no_update - if TRUE lines will be hidden line removed but they

* are not assumed to be part of the surface (i.e. grid) and therefore

* do not influence the hidings.

* hidden_active - TRUE if hidden lines are to be removed.

int hidden_active = FALSE;

int hidden_no_update;

/* LITE defines a restricted memory version for MS-DOS, which doesn't

* use the routines in hidden3d.c

/* HBB 990826: hidden_line_type$above|below$ were unused --> purged */

double xscale3d, yscale3d, zscale3d;

#ifdef PM3D

typedef enum { ALLGRID, FRONTGRID, BACKGRID } WHICHGRID;

WHICHGRID whichgrid = ALLGRID;

#endif

#ifndef PM3D

/* *not* static, we use it in color.c (joze) */

/* HBB 20000813: provide either static prototype here, or non-static in graph3d.h */

static void map3d_xy __PROTO((double x, double y, double z, unsigned int *xt, unsigned int *yt));

#endif

static void plot3d_impulses __PROTO((struct surface_points * plot));

static void plot3d_points __PROTO((struct surface_points * plot, int p_type));

static void plot3d_lines __PROTO((struct surface_points * plot));

#ifdef PM3D

/* no pm3d for impulses */

static void plot3d_lines_pm3d __PROTO((struct surface_points * plot));

static void plot3d_points_pm3d __PROTO((struct surface_points * plot, int p_type));

#endif

static void cntr3d_impulses __PROTO((struct gnuplot_contours * cntr,

struct surface_points * plot));

static void cntr3d_lines __PROTO((struct gnuplot_contours * cntr));

static void cntr3d_points __PROTO((struct gnuplot_contours * cntr,

int p_type));

static void check_corner_height __PROTO((struct coordinate GPHUGE * point,

double height[2][2], double depth[2][2]));

static void draw_bottom_grid __PROTO((struct surface_points * plot,

int plot_count));

static void xtick_callback __PROTO((int axis, double place, char *text,

struct lp_style_type grid));

static void ytick_callback __PROTO((int axis, double place, char *text,

struct lp_style_type grid));

static void ztick_callback __PROTO((int axis, double place, char *text,

struct lp_style_type grid));

static void setlinestyle __PROTO((struct lp_style_type style));

static void boundary3d __PROTO((TBOOLEAN scaling, struct surface_points * plots,

int count));

#if 0 /* not used */

static double dbl_raise __PROTO((double x, int y));

#endif

/* put entries in the key */

static void key_sample_line __PROTO((int xl, int yl));

static void key_sample_point __PROTO((int xl, int yl, int pointtype));

static void key_text __PROTO((int xl, int yl, char *text));

static void get_arrow3d(struct arrow_def* arrow, unsigned int* sx, unsigned int* sy, unsigned int* ex, unsigned int* ey);

static int map3d_getposition __PROTO((struct position* pos, const char* what, double* xpos, double* ypos, double* zpos));

static void map3d_position_r __PROTO((struct position* pos1, struct position* pos2, unsigned int* x, unsigned int* y, const char* what));

* The Amiga SAS/C 6.2 compiler moans about macro envocations causing

* multiple calls to functions. I converted these macros to inline

* functions coping with the problem without loosing speed.

* (MGR, 1993)

#ifdef AMIGA_SC_6_1

GP_INLINE static TBOOLEAN

i_inrange(int z, int min, int max)

{

return ((min < max) ? ((z >= min) && (z <= max)) : ((z >= max) && (z <= min)));

}

GP_INLINE static double

f_max(double a, double b)

{

return (max(a, b));

}

GP_INLINE static double

f_min(double a, double b)

{

return (min(a, b));

}

#else

# define f_max(a,b) GPMAX((a),(b))

# define f_min(a,b) GPMIN((a),(b))

# define i_inrange(z,a,b) inrange((z),(a),(b))

#endif

#define apx_eq(x,y) (fabs(x-y) < 0.001)

#define ABS(x) ((x) >= 0 ? (x) : -(x))

#define SQR(x) ((x) * (x))

/* Define the boundary of the plot

* These are computed at each call to do_plot, and are constant over

* the period of one do_plot. They actually only change when the term

* type changes and when the 'set size' factors change.

int xmiddle, ymiddle, xscaler, yscaler;

static int ptitl_cnt;

static int max_ptitl_len;

static int titlelin;

static int key_sample_width, key_rows, key_cols, key_col_wth, yl_ref;

static int ktitle_lines = 0;

/* Boundary and scale factors, in user coordinates */

/* There are several z's to take into account - I hope I get these

* right !

* ceiling_z is the highest z in use

* floor_z is the lowest z in use

* base_z is the z of the base

* min3d_z is the lowest z of the graph area

* max3d_z is the highest z of the graph area

* ceiling_z is either max3d_z or base_z, and similarly for floor_z

* There should be no part of graph drawn outside

* min3d_z:max3d_z - apart from arrows, perhaps

double floor_z;

#ifndef PM3D /* used in color.c */

static

#endif

double ceiling_z, base_z;

/* HBB 990826: {min|max}3d_z #defines, and transform_matrix typedef

* moved to grahp3d.h */

transform_matrix trans_mat;

static double xaxis_y, yaxis_x, zaxis_x, zaxis_y;

/* the co-ordinates of the back corner */

static double back_x, back_y;

#ifdef USE_MOUSE

int axis3d_o_x, axis3d_o_y, axis3d_x_dx, axis3d_x_dy, axis3d_y_dx, axis3d_y_dy;

#endif

/* the penalty for convenience of using tic_gen to make callbacks

* to tick routines is that we cant pass parameters very easily.

* We communicate with the tick_callbacks using static variables

/* unit vector (terminal coords) */

static double tic_unitx, tic_unity;

/* (DFK) Watch for cancellation error near zero on axes labels */

#define CheckZero(x,tic) (fabs(x) < ((tic) * SIGNIF) ? 0.0 : (x))

#define NearlyEqual(x,y,tic) (fabs((x)-(y)) < ((tic) * SIGNIF))

/* And the functions to map from user to terminal coordinates */

#define map_x(x) (int)(x+0.5) /* maps floating point x to screen */

#define map_y(y) (int)(y+0.5) /* same for y */

/* And the functions to map from user 3D space into normalized -1..1 */

#define map_x3d(x) ((x-x_min3d)*xscale3d-1.0)

#define map_y3d(y) ((y-y_min3d)*yscale3d-1.0)

#define map_z3d(z) ((z-floor_z)*zscale3d-1.0)

/* Initialize the line style using the current device and set hidden styles

* to it as well if hidden line removal is enabled */

static void

setlinestyle(style)

struct lp_style_type style;

{

term_apply_lp_properties(&style);

}

/* And the functions to map from user 3D space to terminal coordinates */

#ifndef PM3D

static

#endif

void

map3d_xy(x, y, z, xt, yt)

double x, y, z;

unsigned int *xt, *yt;

{

int i, j;

double v[4], res[4], /* Homogeneous coords. vectors. */

w = trans_mat[3][3];

v[0] = map_x3d(x); /* Normalize object space to -1..1 */

v[1] = map_y3d(y);

v[2] = map_z3d(z);

v[3] = 1.0;

for (i = 0; i < 2; i++) { /* Dont use the third axes (z). */

res[i] = trans_mat[3][i]; /* Initiate it with the weight factor */

for (j = 0; j < 3; j++)

res[i] += v[j] * trans_mat[j][i];

}

for (i = 0; i < 3; i++)

w += v[i] * trans_mat[i][3];

if (w == 0)

w = 1e-5;

*xt = (unsigned int) ((res[0] * xscaler / w) + xmiddle);

*yt = (unsigned int) ((res[1] * yscaler / w) + ymiddle);

}

/* HBB 991021: moved to here, from hidden3d.c */

/* Two routines to emulate move/vector sequence using line drawing routine. */

unsigned int move_pos_x, move_pos_y;

void

clip_move(x, y)

unsigned int x, y;

{

move_pos_x = x;

move_pos_y = y;

}

void

clip_vector(x, y)

unsigned int x, y;

{

draw_clip_line(move_pos_x, move_pos_y, x, y);

move_pos_x = x;

move_pos_y = y;

}

#if 0 /* HBB 990829: unused! --> commented out */

/* And the functions to map from user 3D space to terminal z coordinate */

int

map3d_z(x, y, z)

double x, y, z;

{

int i, zt;

double v[4], res, /* Homogeneous coords. vectors. */

w = trans_mat[3][3];

v[0] = map_x3d(x); /* Normalize object space to -1..1 */

v[1] = map_y3d(y);

v[2] = map_z3d(z);

v[3] = 1.0;

res = trans_mat[3][2]; /* Initiate it with the weight factor. */

for (i = 0; i < 3; i++)

res += v[i] * trans_mat[i][2];

if (w == 0)

w = 1e-5;

for (i = 0; i < 3; i++)

w += v[i] * trans_mat[i][3];

zt = ((int) (res * 16384 / w));

return zt;

}

#endif /* commented out */

/* borders of plotting area */

/* computed once on every call to do_plot */

static void

boundary3d(scaling, plots, count)

TBOOLEAN scaling; /* TRUE if terminal is doing the scaling */

struct surface_points *plots;

int count;

{

int ytlen, i;

titlelin = 0;

p_height = pointsize * t->v_tic;

p_width = pointsize * t->h_tic;

if (key_swidth >= 0)

key_sample_width = key_swidth * (t->h_char) + pointsize * (t->h_tic);

else

key_sample_width = 0;

key_entry_height = pointsize * (t->v_tic) * 1.25 * key_vert_factor;

if (key_entry_height < (t->v_char)) {

/* is this reasonable ? */

key_entry_height = (t->v_char) * key_vert_factor;

}

/* count max_len key and number keys (plot-titles and contour labels) with len > 0 */

max_ptitl_len = find_maxl_keys3d(plots, count, &ptitl_cnt);

if ((ytlen = label_width(key_title, &ktitle_lines)) > max_ptitl_len)

max_ptitl_len = ytlen;

key_col_wth = (max_ptitl_len + 4) * (t->h_char) + key_sample_width;

/* luecken@udel.edu modifications

sizes the plot to take up more of available resolution */

if (lmargin >= 0)

xleft = (t->h_char) * lmargin;

else

xleft = (t->h_char) * 2 + (t->h_tic);

xright = (scaling ? 1 : xsize) * (t->xmax) - (t->h_char) * 2 - (t->h_tic);

key_rows = ptitl_cnt;

key_cols = 1;

if (key == -1 && key_vpos == TUNDER) {

if (ptitl_cnt > 0) {

/* calculate max no cols, limited by label-length */

key_cols = (int) (xright - xleft) / ((max_ptitl_len + 4) * (t->h_char) + key_sample_width);

/* HBB 991019: fix division by zero problem */

if (key_cols == 0)

key_cols = 1;

key_rows = (int) (ptitl_cnt / key_cols) + ((ptitl_cnt % key_cols) > 0);

/* now calculate actual no cols depending on no rows */

key_cols = (int) (ptitl_cnt / key_rows) + ((ptitl_cnt % key_rows) > 0);

key_col_wth = (int) (xright - xleft) / key_cols;

/* key_rows += ktitle_lines; - messes up key - div */

} else {

key_rows = key_cols = key_col_wth = 0;

}

/* this should also consider the view and number of lines in

* xformat || yformat || xlabel || ylabel */

/* an absolute 1, with no terminal-dependent scaling ? */

ybot = (t->v_char) * 2.5 + 1;

if (key_rows && key == -1 && key_vpos == TUNDER)

ybot += key_rows * key_entry_height + ktitle_lines * t->v_char;

if (strlen(title.text)) {

titlelin++;

for (i = 0; i < strlen(title.text); i++) {

if (title.text[i] == '\\')

titlelin++;

}

ytop = (scaling ? 1 : ysize) * (t->ymax) - (t->v_char) * (titlelin + 1.5) - 1;

if (key == -1 && key_vpos != TUNDER) {

/* calculate max no rows, limited be ytop-ybot */

i = (int) (ytop - ybot) / (t->v_char) - 1 - ktitle_lines;

if (ptitl_cnt > i) {

key_cols = (int) (ptitl_cnt / i) + ((ptitl_cnt % i) > 0);

/* now calculate actual no rows depending on no cols */

key_rows = (int) (ptitl_cnt / key_cols) + ((ptitl_cnt % key_cols) > 0);

}

key_rows += ktitle_lines;

}

if (key == -1 && key_hpos == TOUT) {

xright -= key_col_wth * (key_cols - 1) + key_col_wth - 2 * (t->h_char);

}

xleft += t->xmax * xoffset;

xright += t->xmax * xoffset;

ytop += t->ymax * yoffset;

ybot += t->ymax * yoffset;

xmiddle = (xright + xleft) / 2;

ymiddle = (ytop + ybot) / 2;

/* HBB 980308: sigh... another 16bit glitch: on term's with more than

* 8000 pixels in either direction, these calculations produce garbage

* results if done in (16bit) ints */

xscaler = ((xright - xleft) * 4L) / 7L; /* HBB: Magic number alert! */

yscaler = ((ytop - ybot) * 4L) / 7L;

}

static void

get_arrow3d(arrow, sx, sy, ex, ey)

struct arrow_def* arrow;

unsigned int* sx;

unsigned int* sy;

unsigned int* ex;

unsigned int* ey;

{

map3d_position(&(arrow->start), sx, sy, "arrow");

if (arrow->relative) {

if (arrow->start.scalex == arrow->end.scalex &&

arrow->start.scaley == arrow->end.scaley &&

arrow->start.scalez == arrow->end.scalez) {

/* coordinate systems are equal. The advantage of

* handling this special case is that it works also

* for logscale (which might not work otherwise, if

* the relative arrows point downwards for example) */

struct position delta_pos;

delta_pos = arrow->start;

delta_pos.x += arrow->end.x;

delta_pos.y += arrow->end.y;

delta_pos.z += arrow->end.z;

map_position(&delta_pos, ex, ey, "arrow");

} else {

map3d_position_r(&(arrow->start), &(arrow->end), ex, ey, "arrow");

}

} else {

map3d_position(&(arrow->end), ex, ey, "arrow");

}

#if 0

/* not used ; anyway, should be done using bitshifts and squares,

* rather than iteratively

static double

dbl_raise(x, y)

double x;

int y;

{

double val = 1.0;

while (--i >= 0)

val *= x;

if (y < 0)

return (1.0 / val);

return (val);

}

#endif

/* we precalculate features of the key, to save lots of nested

* ifs in code - x,y = user supplied or computed position of key

* taken to be inner edge of a line sample

static int key_sample_left; /* offset from x for left of line sample */

static int key_sample_right; /* offset from x for right of line sample */

static int key_point_offset; /* offset from x for point sample */

static int key_text_left; /* offset from x for left-justified text */

static int key_text_right; /* offset from x for right-justified text */

static int key_size_left; /* distance from x to left edge of box */

static int key_size_right; /* distance from x to right edge of box */

void

do_3dplot(plots, pcount, quick)

struct surface_points *plots;

int pcount; /* count of plots in linked list */

int quick; /* !=0 means plot only axes etc., for quick rotation */

{

struct termentry *t = term;

int surface;

struct surface_points *this_plot = NULL;

unsigned int xl, yl;

int linetypeOffset = 0;

/* double ztemp, temp; unused */

struct text_label *this_label;

struct arrow_def *this_arrow;

TBOOLEAN scaling;

transform_matrix mat;

int key_count;

char *s, *e;

#ifdef PM3D

TBOOLEAN can_pm3d = 0;

#endif

/* Initiate transformation matrix using the global view variables. */

mat_rot_z(surface_rot_z, trans_mat);

mat_rot_x(surface_rot_x, mat);

mat_mult(trans_mat, trans_mat, mat);

mat_scale(surface_scale / 2.0, surface_scale / 2.0, surface_scale / 2.0, mat);

mat_mult(trans_mat, trans_mat, mat);

#if 0

/* HBB 19990609: this is *not* the way to implement 'set view' <z_scale> */

/* modify min_z/max_z so it will zscale properly. */

ztemp = (z_max3d - z_min3d) / (2.0 * surface_zscale);

temp = (z_max3d + z_min3d) / 2.0;

z_min3d = temp - ztemp;

z_max3d = temp + ztemp;

#endif /* 0 */

/* The extrema need to be set even when a surface is not being

* drawn. Without this, gnuplot used to assume that the X and

* Y axis started at zero. -RKC

if (polar)

graph_error("Cannot splot in polar coordinate system.");

/* done in plot3d.c

* if (z_min3d == VERYLARGE || z_max3d == -VERYLARGE ||

* x_min3d == VERYLARGE || x_max3d == -VERYLARGE ||

* y_min3d == VERYLARGE || y_max3d == -VERYLARGE)

* graph_error("all points undefined!");

/* If we are to draw the bottom grid make sure zmin is updated properly. */

if (xtics || ytics || work_grid.l_type) {

base_z = z_min3d - (z_max3d - z_min3d) * ticslevel;

if (ticslevel >= 0)

floor_z = base_z;

else

floor_z = z_min3d;

if (ticslevel < -1)

ceiling_z = base_z;

else

ceiling_z = z_max3d;

} else {

floor_z = base_z = z_min3d;

ceiling_z = z_max3d;

}

/* see comment accompanying similar tests of x_min/x_max and y_min/y_max

* in graphics.c:do_plot(), for history/rationale of these tests */

if (x_min3d == x_max3d)

graph_error("x_min3d should not equal x_max3d!");

if (y_min3d == y_max3d)

graph_error("y_min3d should not equal y_max3d!");

if (z_min3d == z_max3d)

graph_error("z_min3d should not equal z_max3d!");

#ifndef LITE

if (hidden3d) {

struct surface_points *plot;

int p = 0;

/* Verify data is hidden line removable - grid based. */

for (plot = plots; ++p <= pcount; plot = plot->next_sp) {

if (plot->plot_type == DATA3D && !plot->has_grid_topology) {

fprintf(stderr, "Notice: Cannot remove hidden lines from non grid data\n");

return;

}

#endif /* not LITE */

term_start_plot();

screen_ok = FALSE;

scaling = (*t->scale) (xsize, ysize);

/* now compute boundary for plot (xleft, xright, ytop, ybot) */

boundary3d(scaling, plots, pcount);

/* SCALE FACTORS */

zscale3d = 2.0 / (ceiling_z - floor_z) * surface_zscale;

yscale3d = 2.0 / (y_max3d - y_min3d);

xscale3d = 2.0 / (x_max3d - x_min3d);

term_apply_lp_properties(&border_lp); /* border linetype */

#ifdef PM3D

/* DRAW PM3D ALL COLOUR SURFACES */

can_pm3d = 0;

if (!quick) {

int palette = 0;

if (!pm3d.where[0]) {

for (this_plot = plots, surface = 0; surface < pcount;

this_plot = this_plot->next_sp, surface++) {

if (this_plot->lp_properties.use_palette) {

palette = 1;

break;

}

} else {

palette = 1;

}

if (palette)

can_pm3d = set_pm3d_zminmax() && !make_palette() && term->set_color;

if (pm3d.where[0] && can_pm3d) {

if (pm3d.solid) {

whichgrid = BACKGRID;

draw_bottom_grid(plots, pcount);

}

pm3d_draw_all(plots, pcount);

}

if (can_pm3d) {

/* draw colour box */

draw_color_smooth_box();

}

#endif

/* PLACE TITLE */

if (*title.text != 0) {

write_multiline((unsigned int) ((xleft + xright) / 2 + title.xoffset * t->h_char),

(unsigned int) (ytop + (titlelin + title.yoffset) * (t->h_char)),

title.text, CENTRE, JUST_TOP, 0, title.font);

}

/* PLACE TIMEDATE */

if (*timelabel.text) {

char str[MAX_LINE_LEN+1];

time_t now;

unsigned int x = t->v_char + timelabel.xoffset * t->h_char;

unsigned int y = timelabel_bottom ?

yoffset * ymax + (timelabel.yoffset + 1) * t->v_char :

ytop + (timelabel.yoffset - 1) * t->v_char;

time(&now);

strftime(str, MAX_LINE_LEN, timelabel.text, localtime(&now));

if (timelabel_rotate && (*t->text_angle) (1)) {

if (timelabel_bottom)

write_multiline(x, y, str, LEFT, JUST_TOP, 1, timelabel.font);

else

write_multiline(x, y, str, RIGHT, JUST_TOP, 1, timelabel.font);

(*t->text_angle) (0);

} else {

if (timelabel_bottom)

write_multiline(x, y, str, LEFT, JUST_BOT, 0, timelabel.font);

else

write_multiline(x, y, str, LEFT, JUST_TOP, 0, timelabel.font);

}

/* PLACE LABELS */

if (t->pointsize) {

(*t->pointsize)(pointsize);

}

for (this_label = first_label; this_label != NULL;

this_label = this_label->next) {

unsigned int x, y;

int htic;

int vtic;

get_offsets(this_label, t, &htic, &vtic);

if (this_label->layer)

continue;

map3d_position(&this_label->place, &x, &y, "label");

if (this_label->rotate && (*t->text_angle) (1)) {

write_multiline(x + htic, y + vtic, this_label->text, this_label->pos, CENTRE, 1, this_label->font);

(*t->text_angle) (0);

} else {

write_multiline(x + htic, y + vtic, this_label->text, this_label->pos, CENTRE, 0, this_label->font);

}

if (-1 != this_label->pointstyle) {

(*t->point)(x, y, this_label->pointstyle);

}

/* PLACE ARROWS */

for (this_arrow = first_arrow; this_arrow != NULL;

this_arrow = this_arrow->next) {

unsigned int sx, sy, ex, ey;

if (this_arrow->layer)

continue;

get_arrow3d(this_arrow, &sx, &sy, &ex, &ey);

term_apply_lp_properties(&(this_arrow->lp_properties));

apply_head_properties(&(this_arrow->headsize));

(*t->arrow) (sx, sy, ex, ey, this_arrow->head);

}

#ifndef LITE

if (hidden3d && draw_surface && !quick) {

init_hidden_line_removal();

reset_hidden_line_removal();

hidden_active = TRUE;

}

#endif /* not LITE */

/* WORK OUT KEY SETTINGS AND DO KEY TITLE / BOX */

if (key_reverse) {

key_sample_left = -key_sample_width;

key_sample_right = 0;

key_text_left = t->h_char;

key_text_right = (t->h_char) * (max_ptitl_len + 1);

key_size_right = (t->h_char) * (max_ptitl_len + 2 + key_width_fix);

key_size_left = (t->h_char) + key_sample_width;

} else {

key_sample_left = 0;

key_sample_right = key_sample_width;

key_text_left = -(int) ((t->h_char) * (max_ptitl_len + 1));

key_text_right = -(int) (t->h_char);

key_size_left = (t->h_char) * (max_ptitl_len + 2 + key_width_fix);

key_size_right = (t->h_char) + key_sample_width;

}

key_point_offset = (key_sample_left + key_sample_right) / 2;

if (key == -1) {

if (key_vpos == TUNDER) {

#if 0

yl = yoffset * t->ymax + (key_rows) * key_entry_height + (ktitle_lines + 2) * t->v_char;

xl = max_ptitl_len * 1000 / (key_sample_width / (t->h_char) + max_ptitl_len + 2);

xl *= (xright - xleft) / key_cols;

xl /= 1000;

xl += xleft;

#else

/* HBB 19990608: why calculate these again? boundary3d has already

* done it... */

if (ptitl_cnt > 0) {

/* maximise no cols, limited by label-length */

key_cols = (int) (xright - xleft) / key_col_wth;

key_rows = (int) (ptitl_cnt + key_cols - 1) / key_cols;

/* now calculate actual no cols depending on no rows */

key_cols = (int) (ptitl_cnt + key_rows - 1) / key_rows;

key_col_wth = (int) (xright - xleft) / key_cols;

/* we divide into columns, then centre in column by considering

* ratio of key_left_size to key_right_size

* key_size_left/(key_size_left+key_size_right) * (xright-xleft)/key_cols

* do one integer division to maximise accuracy (hope we dont

* overflow !)

xl = xleft + ((xright - xleft) * key_size_left) / (key_cols * (key_size_left + key_size_right));

yl = yoffset * t->ymax + (key_rows) * key_entry_height + (ktitle_lines + 2) * t->v_char;

}

#endif

} else {

if (key_vpos == TTOP) {

yl = ytop - (t->v_tic) - t->v_char;

} else {

yl = ybot + (t->v_tic) + key_entry_height * key_rows + ktitle_lines * t->v_char;

}

if (key_hpos == TOUT) {

/* keys outside plot border (right) */

xl = xright + (t->h_tic) + key_size_left;

} else if (key_hpos == TLEFT) {

xl = xleft + (t->h_tic) + key_size_left;

} else {

xl = xright - key_size_right - key_col_wth * (key_cols - 1);

}

yl_ref = yl - ktitle_lines * (t->v_char);

}

if (key == 1) {

map3d_position(&key_user_pos, &xl, &yl, "key");

}

if (key && key_box.l_type > -3) {

int yt = yl;

int yb = yl - key_entry_height * (key_rows - ktitle_lines) - ktitle_lines * t->v_char;

int key_xr = xl + key_col_wth * (key_cols - 1) + key_size_right;

/* key_rows seems to contain title at this point ??? */

term_apply_lp_properties(&key_box);

(*t->move) (xl - key_size_left, yb);

(*t->vector) (xl - key_size_left, yt);

(*t->vector) (key_xr, yt);

(*t->vector) (key_xr, yb);

(*t->vector) (xl - key_size_left, yb);

/* draw a horizontal line between key title and first entry JFi */

(*t->move) (xl - key_size_left, yt - (ktitle_lines) * t->v_char);

(*t->vector) (xl + key_size_right, yt - (ktitle_lines) * t->v_char);

}

/* DRAW SURFACES AND CONTOURS */

#ifndef LITE

if (hidden3d && draw_surface && !quick)

plot3d_hidden(plots, pcount);

#endif /* not LITE */

/* KEY TITLE */

if (key != 0 && strlen(key_title)) {

char *ss = gp_alloc(strlen(key_title) + 2, "tmp string ss");

strcpy(ss, key_title);

strcat(ss, "\n");

s = ss;

yl -= t->v_char / 2;

while ((e = (char *) strchr(s, '\n')) != NULL) {

*e = '\0';

if (key_just == JLEFT) {

(*t->justify_text) (LEFT);

(*t->put_text) (xl + key_text_left, yl, s);

} else {

if ((*t->justify_text) (RIGHT)) {

(*t->put_text) (xl + key_text_right,

yl, s);

} else {

int x = xl + key_text_right - (t->h_char) * strlen(s);

if (inrange(x, xleft, xright))

(*t->put_text) (x, yl, s);

}

s = ++e;

yl -= t->v_char;

}

yl += t->v_char / 2;

free(ss);

}

key_count = 0;

yl_ref = yl -= key_entry_height / 2; /* centralise the keys */

#define NEXT_KEY_LINE() \

if ( ++key_count >= key_rows ) { \

yl = yl_ref; xl += key_col_wth; key_count = 0; \

} else \

yl -= key_entry_height

this_plot = plots;

if (!quick)

for (surface = 0;

surface < pcount;

this_plot = this_plot->next_sp, surface++) {

#ifdef PM3D

/* just an abbreviation */

TBOOLEAN use_palette = can_pm3d && this_plot->lp_properties.use_palette;

#endif

#ifndef LITE

if (hidden3d)

hidden_no_update = FALSE;

#endif /* not LITE */

if (draw_surface) {

int lkey = (key != 0 && this_plot->title && this_plot->title[0]);

term_apply_lp_properties(&(this_plot->lp_properties));

if (lkey) {

ignore_enhanced_text = this_plot->title_no_enhanced == 1;

key_text(xl, yl, this_plot->title);

ignore_enhanced_text = 0;

}

switch (this_plot->plot_style) {

case BOXES: /* can't do boxes in 3d yet so use impulses */

case IMPULSES:{

if (lkey) {

key_sample_line(xl, yl);

}

if (!(hidden3d && draw_surface))

plot3d_impulses(this_plot);

break;

}

case STEPS: /* HBB: I think these should be here */

case FSTEPS:

case HISTEPS:

case LINES:{

if (lkey) {

key_sample_line(xl, yl);

}

if (!(hidden3d && draw_surface)) {

#ifdef PM3D

if (use_palette)

plot3d_lines_pm3d(this_plot);

else

#endif

plot3d_lines(this_plot);

}

break;

}

case YERRORLINES: /* ignored; treat like points */

case XERRORLINES: /* ignored; treat like points */

case XYERRORLINES: /* ignored; treat like points */

case YERRORBARS: /* ignored; treat like points */

case XERRORBARS: /* ignored; treat like points */

case XYERRORBARS: /* ignored; treat like points */

case BOXXYERROR: /* HBB: ignore these as well */

case BOXERROR:

case CANDLESTICKS: /* HBB: dito */

case FINANCEBARS:

case VECTOR:

case POINTSTYLE:

if (lkey) {

key_sample_point(xl, yl, this_plot->lp_properties.p_type);

}

if (!(hidden3d && draw_surface)) {

#ifdef PM3D

if (use_palette)

plot3d_points_pm3d(this_plot, this_plot->lp_properties.p_type);

else

#endif

plot3d_points(this_plot, this_plot->lp_properties.p_type);

}

break;

case LINESPOINTS:

/* put lines */

if (lkey)

key_sample_line(xl, yl);

if (!(hidden3d && draw_surface)) {

#ifdef PM3D

if (use_palette)

plot3d_lines_pm3d(this_plot);

else

#endif

plot3d_lines(this_plot);

}

/* put points */

if (lkey)

key_sample_point(xl, yl, this_plot->lp_properties.p_type);

if (!(hidden3d && draw_surface)) {

#ifdef PM3D

if (use_palette)

plot3d_points_pm3d(this_plot, this_plot->lp_properties.p_type);

else

#endif

plot3d_points(this_plot, this_plot->lp_properties.p_type);

}

break;

case DOTS:

if (lkey) {

if (key == 1) {

if (!clip_point(xl + key_point_offset, yl))

(*t->point) (xl + key_point_offset, yl, -1);

} else {

(*t->point) (xl + key_point_offset, yl, -1);

/* (*t->point)(xl+2*(t->h_char),yl, -1); */

}

if (!(hidden3d && draw_surface)) {

#ifdef PM3D

if (use_palette)

plot3d_points_pm3d(this_plot, -1);

else

#endif

plot3d_points(this_plot, -1);

}

break;

} /* switch(plot-style) */

/* move key on a line */

if (lkey) {

NEXT_KEY_LINE();

}

} /* draw_surface */

#ifndef LITE

if (hidden3d) {

hidden_no_update = TRUE;

}

#endif /* not LITE */

if (draw_contour && this_plot->contours != NULL) {

struct gnuplot_contours *cntrs = this_plot->contours;

term_apply_lp_properties(&(this_plot->lp_properties));

(*t->linetype) (this_plot->lp_properties.l_type + (hidden3d ? 2 : 1));

if (key != 0 && this_plot->title && this_plot->title[0]

&& !draw_surface && !label_contours) {

/* unlabelled contours but no surface : put key entry in now */

ignore_enhanced_text = this_plot->title_no_enhanced == 1;

key_text(xl, yl, this_plot->title);

View remainder of file in raw view

gnuplot-old/src/graph3d.c at pm3d · gnuplot/gnuplot-old · GitHub

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