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Code

Scale z axis in projection displays to obtain 1:1 aspect ratio.

Browse Source 
- solidify/level.c (draw_xz, draw_zy): use f->sz-1 instead of zm as maximum
  value
- solidify/level.c (draw_xz, draw_zy, level): scale z axis by step size
  ratio
This commit is contained in:
Werner Almesberger 2010-09-28 20:24:56 -03:00
parent 46704e6b0e
commit 761002e0e5
1 changed files with 26 additions and 12 deletions
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38
solidify/level.c
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@ -95,11 +95,12 @@ static void draw_image(GtkWidget *widget, struct face *f, int osd)
static void draw_xz(GtkWidget *widget, struct face *f, int y)
{
int zm = f->a->max_z;
int sz = f->sz*z0_scale(f);
int x, z;
double z0;
guchar *rgbbuf, *p;
rgbbuf = p = calloc(f->sx*f->sz, 3);
rgbbuf = p = calloc(f->sx*sz, 3);
if (!rgbbuf) {
perror("calloc");
exit(1);
@ -109,21 +110,27 @@ static void draw_xz(GtkWidget *widget, struct face *f, int y)
z = get(f->a, x+f->a->min_x, y+f->a->min_y);
z0 = face_z0(f, x, y);
if (z == UNDEF || z == z0) {
aa_line(rgbbuf, x, zm-z0, zm-z0, zm, f->sx,
aa_line(rgbbuf, x,
(zm-z0)*z0_scale(f), (zm-z0)*z0_scale(f),
sz-1, f->sx,
(uint8_t *) "\0\0\xff", vpoint);
continue;
}
if (z > z0) {
aa_line(rgbbuf, x, zm-z, zm-z0, zm, f->sx,
aa_line(rgbbuf, x,
(zm-z)*z0_scale(f), (zm-z0)*z0_scale(f),
sz-1, f->sx,
(uint8_t *) "\0\xff\0", vpoint);
} else {
aa_line(rgbbuf, x, zm-z0, zm-z, zm, f->sx,
aa_line(rgbbuf, x,
(zm-z0)*z0_scale(f), (zm-z)*z0_scale(f),
sz-1, f->sx,
(uint8_t *) "\xff\0\0", vpoint);
}
}
gdk_draw_rgb_image(widget->window,
widget->style->fg_gc[GTK_STATE_NORMAL],
0, 0, f->sx, f->sz, GDK_RGB_DITHER_MAX, rgbbuf, f->sx*3);
0, 0, f->sx, sz, GDK_RGB_DITHER_MAX, rgbbuf, f->sx*3);
free(rgbbuf);
}
@ -132,11 +139,12 @@ static void draw_xz(GtkWidget *widget, struct face *f, int y)
static void draw_zy(GtkWidget *widget, struct face *f, int x)
{
int zm = f->a->max_z;
int sz = f->sz*z0_scale(f);
int y, z;
double z0;
guchar *rgbbuf, *p;
rgbbuf = p = calloc(f->sy*f->sz, 3);
rgbbuf = p = calloc(f->sy*sz, 3);
if (!rgbbuf) {
perror("calloc");
exit(1);
@ -146,21 +154,27 @@ static void draw_zy(GtkWidget *widget, struct face *f, int x)
z = get(f->a, x+f->a->min_x, f->a->max_y-y);
z0 = face_z0(f, x, f->sy-y-1);
if (z == UNDEF || z == z0) {
aa_line(rgbbuf, y, zm-z0, zm-z0, zm, f->sz,
aa_line(rgbbuf, y,
(zm-z0)*z0_scale(f), (zm-z0)*z0_scale(f),
sz-1, sz,
(uint8_t *) "\0\0\xff", hpoint);
continue;
}
if (z > z0) {
aa_line(rgbbuf, y, zm-z, zm-z0, zm, f->sz,
aa_line(rgbbuf, y,
(zm-z)*z0_scale(f), (zm-z0)*z0_scale(f),
sz-1, sz,
(uint8_t *) "\0\xff\0", hpoint);
} else {
aa_line(rgbbuf, y, zm-z0, zm-z, zm, f->sz,
aa_line(rgbbuf, y,
(zm-z0)*z0_scale(f), (zm-z)*z0_scale(f),
sz-1, sz,
(uint8_t *) "\xff\0\0", hpoint);
}
}
gdk_draw_rgb_image(widget->window,
widget->style->fg_gc[GTK_STATE_NORMAL],
0, 0, f->sz, f->sy, GDK_RGB_DITHER_MAX, rgbbuf, f->sz*3);
0, 0, sz, f->sy, GDK_RGB_DITHER_MAX, rgbbuf, sz*3);
free(rgbbuf);
}
@ -284,8 +298,8 @@ void level(GtkWidget *canvas, struct face *f)
GDK_POINTER_MOTION_MASK);
gtk_widget_set_size_request(xy, f->sx, f->sy);
gtk_widget_set_size_request(xz, f->sx, f->sz);
gtk_widget_set_size_request(zy, f->sz, f->sy);
gtk_widget_set_size_request(xz, f->sx, f->sz*z0_scale(f));
gtk_widget_set_size_request(zy, f->sz*z0_scale(f), f->sy);
gtk_table_set_row_spacings(GTK_TABLE(tab), 2);
gtk_table_set_col_spacings(GTK_TABLE(tab), 2);