mirror of
git://projects.qi-hardware.com/cae-tools.git
synced 2024-12-22 23:26:27 +02:00
Changed the style of projection displays from lines to filled surfaces, to
make it easier to discern where is up and where is down. - solidify/gui_util.h, solidify/gui_util.c (hpoint, vpoint, alpha, aa_line): draw horizontal or vertical lines with anti-aliases beginning and end - solidify/level.c (draw_xz, draw_zy): instead of drawing thin lines for z and z0, show a filled surface of the difference
This commit is contained in:
Werner Almesberger
parent
fd7b7223ab
commit
46704e6b0e
@ -11,11 +11,77 @@
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*/
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#include <stdint.h>
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#include <math.h>
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#include <assert.h>
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#include <gtk/gtk.h>
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#include "gui_util.h"
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void hpoint(guchar *rgbbuf, int x, int y, int sx, uint8_t c[3])
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{
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guchar *p = rgbbuf+(y*sx+x)*3;
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p[0] = c[0];
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p[1] = c[1];
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p[2] = c[2];
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}
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void vpoint(guchar *rgbbuf, int y, int x, int sx, uint8_t c[3])
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{
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guchar *p = rgbbuf+(y*sx+x)*3;
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p[0] = c[0];
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p[1] = c[1];
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p[2] = c[2];
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}
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static void alpha(guchar *rgbbuf, int f, int i, int sx, uint8_t c[3], double w,
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void (*point)(guchar *rgbbuf, int f, int i, int sx, uint8_t c[3]))
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{
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uint8_t ct[3];
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int n;
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assert(w >= 0);
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assert(w <= 1);
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for (n = 0; n != 3; n++)
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ct[n] = round(c[n]*w);
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point(rgbbuf, f, i, sx, ct);
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}
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void aa_line(guchar *rgbbuf, int i, double fa, double fb, int max, int sx,
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uint8_t c[3],
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void (*point)(guchar *rgbbuf, int f, int i, int sx, uint8_t c[3]))
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{
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int f0, f1;
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int from, to, n;
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assert(max > 0);
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assert(fb >= fa);
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f0 = floor(fa);
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f1 = ceil(fb);
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if (f0 > max || f1 < 0)
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return;
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if (f0 == f1) {
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if (f0 >= 0 && f1 <= max)
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point(rgbbuf, f0, i, sx, c);
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return;
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}
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if (f0 >= 0)
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alpha(rgbbuf, f0, i, sx, c, 1-(fa-f0), point);
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if (f1 <= max)
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alpha(rgbbuf, f1, i, sx, c, 1-(f1-fb), point);
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from = f0+1 > 0 ? f0+1 : 0;
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to = f1-1 < max ? f1-1: max;
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for (n = from; n <= to; n++)
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point(rgbbuf, n, i, sx, c);
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}
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void draw_circle(GdkDrawable *da, GdkGC *gc, int x, int y, int r)
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{
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gdk_draw_arc(da, gc, FALSE, x-r, y-r, 2*r, 2*r, 0, 360*64);
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@ -13,9 +13,17 @@
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#ifndef GUI_UTIL_H
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#define GUI_UTIL_H
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#include <stdint.h>
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#include <gtk/gtk.h>
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void hpoint(guchar *rgbbuf, int x, int y, int sx, uint8_t c[3]);
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void vpoint(guchar *rgbbuf, int y, int x, int sx, uint8_t c[3]);
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void aa_line(guchar *rgbbuf, int i, double fa, double fb, int max, int sx,
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uint8_t c[3],
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void (*point)(guchar *rgbbuf, int f, int i, int sx, uint8_t c[3]));
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void draw_circle(GdkDrawable *da, GdkGC *gc, int x, int y, int r);
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#endif /* !GUI_UTIL_H */
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@ -94,7 +94,9 @@ static void draw_image(GtkWidget *widget, struct face *f, int osd)
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static void draw_xz(GtkWidget *widget, struct face *f, int y)
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{
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int x, z, z0;
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int zm = f->a->max_z;
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int x, z;
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double z0;
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guchar *rgbbuf, *p;
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rgbbuf = p = calloc(f->sx*f->sz, 3);
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@ -105,19 +107,18 @@ static void draw_xz(GtkWidget *widget, struct face *f, int y)
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if (y != -1)
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for (x = 0; x != f->sx ; x++) {
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z = get(f->a, x+f->a->min_x, y+f->a->min_y);
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if (z != UNDEF) {
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p = rgbbuf+3*(x+f->sx*(f->sz-z+f->a->min_z-1));
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p[0] = 0xff;
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p[1] = 0xff;
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p[2] = 0xff;
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}
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z0 = round(face_z0(f, x, y));
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/* @@@ anti-alias */
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if (z0 >= f->a->min_z && z0 <= f->a->max_z) {
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p = rgbbuf+3*(x+f->sx*(f->sz-z0+f->a->min_z-1));
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p[0] = 0x80;
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p[1] = 0xc0;
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p[2] = 0xff;
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z0 = face_z0(f, x, y);
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if (z == UNDEF || z == z0) {
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aa_line(rgbbuf, x, zm-z0, zm-z0, zm, f->sx,
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(uint8_t *) "\0\0\xff", vpoint);
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continue;
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}
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if (z > z0) {
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aa_line(rgbbuf, x, zm-z, zm-z0, zm, f->sx,
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(uint8_t *) "\0\xff\0", vpoint);
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} else {
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aa_line(rgbbuf, x, zm-z0, zm-z, zm, f->sx,
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(uint8_t *) "\xff\0\0", vpoint);
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}
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}
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gdk_draw_rgb_image(widget->window,
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@ -130,7 +131,9 @@ static void draw_xz(GtkWidget *widget, struct face *f, int y)
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static void draw_zy(GtkWidget *widget, struct face *f, int x)
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{
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int y, z, z0;
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int zm = f->a->max_z;
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int y, z;
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double z0;
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guchar *rgbbuf, *p;
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rgbbuf = p = calloc(f->sy*f->sz, 3);
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@ -140,20 +143,19 @@ static void draw_zy(GtkWidget *widget, struct face *f, int x)
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}
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if (x != -1)
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for (y = 0; y != f->sy ; y++) {
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z = get(f->a, x+f->a->min_x, y+f->a->min_y);
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if (z != UNDEF) {
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p = rgbbuf+3*(f->a->max_z-z+f->sz*(f->sy-y-1));
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p[0] = 0xff;
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p[1] = 0xff;
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p[2] = 0xff;
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z = get(f->a, x+f->a->min_x, f->a->max_y-y);
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z0 = face_z0(f, x, f->sy-y-1);
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if (z == UNDEF || z == z0) {
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aa_line(rgbbuf, y, zm-z0, zm-z0, zm, f->sz,
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(uint8_t *) "\0\0\xff", hpoint);
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continue;
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}
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z0 = round(face_z0(f, x, y));
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/* @@@ anti-alias */
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if (z0 >= f->a->min_z && z0 <= f->a->max_z) {
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p = rgbbuf+3*(f->a->max_z-z0+f->sz*(f->sy-y-1));
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p[0] = 0x80;
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p[1] = 0xc0;
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p[2] = 0xff;
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if (z > z0) {
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aa_line(rgbbuf, y, zm-z, zm-z0, zm, f->sz,
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(uint8_t *) "\0\xff\0", hpoint);
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} else {
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aa_line(rgbbuf, y, zm-z0, zm-z, zm, f->sz,
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(uint8_t *) "\xff\0\0", hpoint);
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}
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}
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gdk_draw_rgb_image(widget->window,
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