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OK (space & arrows) pour de petits nombres. Nettoyage en cours.

This commit is contained in:
Jean Sirmai 2023-10-16 11:17:46 +02:00
parent 98c22b4fb6
commit 8f7ee02cdd
Signed by: jean
GPG Key ID: FB3115C340E057E3
5 changed files with 54 additions and 431 deletions
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53
include/arrows.h
View File

@ -38,58 +38,7 @@ typedef struct arrow_t {
GLuint z;
};
/*
* Writes basis and tip for all arrows into vertex and color buffers
*
* @param dimensions (x,y,z)
*
* @return void
*/
void arrows_write_terminations (long x, long y, long z);
/*
* Writes lines for arrow oriented to the east or west into lines buffer
*
* @param s,
* weight,
* site
*
* @return void
*/
void write_arrow_lines_east_west (long s, int weight, int site);
/*
* Writes lines for arrow oriented to the zenith or nadir into lines buffer
*
* @param s,
* weight,
* site
*
* @return void
*/
void write_arrow_lines_zenith_nadir (long s, int weight, int site);
/*
* Writes lines for arrow oriented to the south or north into lines buffer
*
* @param s,
* weight,
* site
*
* @return void
*/
void write_arrow_lines_south_north (long s, int weight, int site);
/*
* Writes three lines that draw arrow basis (central star) into lines buffer
*
* @param n
*
* @return void
*/
void arrows_write_basis (long n);
int write_one_arrow(int offset_vertex, int offset_colors, int offset_lines,
int write_one_arrow(int offset_vertex,
int space_X, int space_Y, int space_Z,
int weight, int site, int x, int y, int z);

46
include/grid.h
View File

@ -27,19 +27,6 @@
#include <stdbool.h>
#include <GL/glu.h>
int write_space_ridges (long offset_vertex, long offset_colors, long offset_lines, long x, long y, long z);
long write_grids_on_space_faces (long offset_vertex, long offset_colors, long offset_lines, long x, long y, long z, int style);
/*
* Writes grid lines intersections to vertex and color buffers
*
* @param coords long (x,y,z)
*
* @return void
*/
void grid_write_intersections (long x, long y, long z);
/*
* Writes grid ridges to vertex and color buffers
*
@ -47,41 +34,14 @@ void grid_write_intersections (long x, long y, long z);
*
* @return void
*/
void grid_write_ridges (long x, long y, long z);
int write_space_ridges (long offset_vertex, long offset_colors, long offset_lines, long x, long y, long z);
/*
* Writes marks (each space unit) along space ridges
*
* @param coords long (x,y,z) // , step_x, step_y, step_z
*
* @return void
*/
void grid_write_marks (long x, long y, long z);
/*
* Writes grid lines for x axis to vertex and color buffers
* Writes grid lines on space faces
*
* @param coords long (x,y,z)
*
* @return void
*/
void grid_write_x (long x, long y, long z);
long write_grids_on_space_faces (long offset_vertex, long offset_colors, long offset_lines, long x, long y, long z, int style);
/*
* Writes grid lines for y axis to vertex and color buffers
*
* @param coords long (x,y,z)
*
* @return void
*/
void grid_write_y (long x, long y, long z);
/*
* Writes grid lines for z axis to vertex and color buffers
*
* @param coords long (x,y,z)
*
* @return void
*/
void grid_write_z (long x, long y, long z);

100
src/graphics/arrows.c
View File

@ -19,7 +19,7 @@
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* aint with this program. If not, see <http://www.gnu.org/licenses/>.
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "../../include/base.h"
@ -40,64 +40,7 @@
*
* @return void
*/
void arrows_write_terminations (long x, long y, long z)
{
float max, i, j, k, vx, vy, vz, arrow_basis_width, arrow_tip_padding, nuance = 0.24f;
max = fmax(x, y); max = fmax(max, z);
// arrow_basis_width donne la dimension de l'étoile centrale
arrow_basis_width = 0.3f * (1 / max),
// décale légèrement les pointes des flèches
// pour qu'elles n'aillent pas jusqu'aux faces des cubes
arrow_tip_padding = 0.1 * (1 / max);
for (i = 0; i < x; i++)
for (j = 0; j < y; j++)
for (k = 0; k < z; k++){
vx = (2 * i / x - 1) * x / max + (1 / max);
vy = (2 * j / y - 1) * y / max + (1 / max);
vz = (2 * k / z - 1) * z / max + (1 / max);
// X - X axis - central star (basis)
graphics_write_vertex(vx + arrow_basis_width, vy, vz);
graphics_write_vertex(vx - arrow_basis_width, vy, vz);
graphics_write_color(0.3f, 0.3f, 0.3f);
graphics_write_color(0.3f, 0.3f, 0.3f);
// Y - Y axis - central star (basis)
graphics_write_vertex(vx, vy + arrow_basis_width, vz);
graphics_write_vertex(vx, vy - arrow_basis_width, vz);
graphics_write_color(0.3f, 0.3f, 0.3f);
graphics_write_color(0.3f, 0.3f, 0.3f);
// Z - Z axis - central star (basis)
graphics_write_vertex(vx, vy, vz + arrow_basis_width);
graphics_write_vertex(vx, vy, vz - arrow_basis_width);
graphics_write_color(0.3f, 0.3f, 0.3f);
graphics_write_color(0.3f, 0.3f, 0.3f);
// X - X (EAST - WEST) axis - arrows tips (red - green)
graphics_write_vertex (vx + (1 / max) - arrow_tip_padding, vy, vz);
graphics_write_vertex (vx - (1 / max) + arrow_tip_padding, vy, vz);
graphics_write_color(1.0f - nuance / 3, 0.0f + nuance, 0.0f + nuance);
graphics_write_color(0.0f + nuance, 1.0f - nuance, 1.0f - nuance);
// Y - Y (ZENITH - NADIR) axis - arrows tips (cyan - magenta)
graphics_write_vertex (vx, vy + (1 / max) - arrow_tip_padding, vz);
graphics_write_vertex (vx, vy - (1 / max) + arrow_tip_padding, vz);
graphics_write_color(0.0f + nuance, 1.0f - nuance / 3, 0.0f + nuance);
graphics_write_color(1.0f - nuance, 0.0f + nuance, 1.0f - nuance);
// Z - Z (NORTH - SOUTH) axis - arrows tips (blue - yellow)
graphics_write_vertex (vx, vy, vz + (1 / max) - arrow_tip_padding);
graphics_write_vertex (vx, vy, vz - (1 / max) + arrow_tip_padding);
graphics_write_color(0.0f + nuance, 0.0f + nuance, 1.0f - nuance / 4);
graphics_write_color(1.0f - nuance / 3, 1.0f - nuance / 3, 0.0f + nuance);
};
}
/*
* Writes lines for arrow oriented towards east or west into lines buffer
@ -108,7 +51,7 @@ void arrows_write_terminations (long x, long y, long z)
*
* @return void
*/
void write_arrow_lines_east_west (long offset, int weight, int site)
static void write_arrow_lines_east_west (long offset, int weight, int site)
{
graphics_write_line (offset + 2, offset + 6 + site % 2);
graphics_write_line (offset + 3, offset + 6 + site % 2);
@ -125,7 +68,7 @@ void write_arrow_lines_east_west (long offset, int weight, int site)
*
* @return void
*/
void write_arrow_lines_zenith_nadir (long offset, int weight, int site)
static void write_arrow_lines_zenith_nadir (long offset, int weight, int site)
{
graphics_write_line (offset + 0, offset + 8 + site % 2);
graphics_write_line (offset + 1, offset + 8 + site % 2);
@ -142,7 +85,7 @@ void write_arrow_lines_zenith_nadir (long offset, int weight, int site)
*
* @return void
*/
void write_arrow_lines_south_north (long offset, int weight, int site)
static void write_arrow_lines_south_north (long offset, int weight, int site)
{
graphics_write_line (offset + 0, offset + 10 + site % 2);
graphics_write_line (offset + 1, offset + 10 + site % 2);
@ -157,7 +100,7 @@ void write_arrow_lines_south_north (long offset, int weight, int site)
*
* @return void
*/
void arrows_write_basis(long offset)
static void arrows_write_basis(long offset)
{
graphics_write_line (offset + 0, offset + 1);
graphics_write_line (offset + 2, offset + 3);
@ -167,27 +110,26 @@ void arrows_write_basis(long offset)
/******************************************************************************/
int write_one_arrow(int offset_vertex, int offset_colors, int offset_lines,
int space_X_int, int space_Y_int, int space_Z_int,
int weight, int site, int arrow_x, int arrow_y, int arrow_z)
int write_one_arrow(int offset_vertex,
int space_X_int, int space_Y_int, int space_Z_int,
int weight, int site, int arrow_x, int arrow_y, int arrow_z)
{
float space_X = space_X_int, space_Y = space_Y_int, space_Z = space_Z_int;
float max = fmax(space_X, space_Y);
max = fmax(max, space_Z);
float max = fmax(space_X_int, space_Y_int);
max = fmax(max, space_Z_int);
float i = arrow_x, j = arrow_y, k = arrow_z;
float vx = (2 * i / space_X - 1) * space_X / max + (1 / max),
vy = (2 * j / space_Y - 1) * space_Y / max + (1 / max),
vz = (2 * k / space_Z - 1) * space_Z / max + (1 / max);
float vx = (2 * i / space_X_int - 1) * space_X_int / max + (1 / max),
vy = (2 * j / space_Y_int - 1) * space_Y_int / max + (1 / max),
vz = (2 * k / space_Z_int - 1) * space_Z_int / max + (1 / max);
// arrow_basis_width donne la dimension de l'étoile centrale
GLfloat arrow_basis_width = 0.3f * (1 / max),
GLfloat arrow_basis_width = (1 / max) / 5;
// décale légèrement les pointes des flèches
// pour qu'elles n'aillent pas jusqu'aux faces des cubes
arrow_tip_padding = 0.1 * (1 / max);
GLfloat arrow_tip_padding = (1 / max) / 10;
// X - X axis - central star (basis)
graphics_write_vertex(vx + arrow_basis_width, vy, vz);
@ -207,16 +149,10 @@ int write_one_arrow(int offset_vertex, int offset_colors, int offset_lines,
graphics_write_color(0.3f, 0.3f, 0.3f);
graphics_write_color(0.3f, 0.3f, 0.3f);
/* offset_vertex += 6; */
/* offset_colors += 6; */
graphics_write_line (offset_vertex + 0, offset_vertex + 1);
graphics_write_line (offset_vertex + 2, offset_vertex + 3);
graphics_write_line (offset_vertex + 4, offset_vertex + 5);
/* offset_lines += 3; // inutile... */
GLfloat nuance = 0.24f;
@ -235,11 +171,9 @@ int write_one_arrow(int offset_vertex, int offset_colors, int offset_lines,
// Z - Z (NORTH - SOUTH) axis - arrows tips (blue - yellow)
graphics_write_vertex (vx, vy, vz + (1 / max) - arrow_tip_padding);
graphics_write_vertex (vx, vy, vz - (1 / max) + arrow_tip_padding);
graphics_write_color(0.0f + nuance, 0.0f + nuance, 1.0f - nuance / 4);
graphics_write_color(1.0f - nuance / 4, 1.0f - nuance / 4, 0.0f + nuance);
graphics_write_color(0.0f + nuance * 2, 0.0f + nuance * 2, 1.0f - nuance);
graphics_write_color(1.0f - nuance / 3, 1.0f - nuance / 3, 0.0f + nuance);
/* offset_vertex += 6; */
/* offset_colors += 6; */
switch(site){
case EAST: case WEST: write_arrow_lines_east_west (offset_vertex, weight, site); break;

115
src/graphics/graphics.c
View File

@ -379,7 +379,7 @@ void graphics_draw(const void *gl_area)
/* Use our shaders */
glUseProgram(entry->program);
// if (pref_style_mix_colors == 0)
// if (pref_show_space_design_mix_colors == 0)
glClearColor(0, 0, 0, 0.4f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
@ -564,10 +564,10 @@ bool graphics_shutdown(const void *gl_area)
*
* For each arrow the following parameters are displayed :
* - rank in the array
* - weight (or load)
* - load (or weight)
* - coordinates in space (site, x, y, z)
*/
static void show_arrows_array (struct arrow_t *arrows, int arrows_nb)
static void print_arrows_array (struct arrow_t *arrows, int arrows_nb)
{
printf(" [rank] load | site x y z");
for (int i = 0; i < arrows_nb; i++)
@ -584,61 +584,17 @@ static void show_arrows_array (struct arrow_t *arrows, int arrows_nb)
* NB The space may be empty or saturated with arrows or any value in between
* Only one arrow per possible coordinates with a load max equal to ? TODO
*/
static void show_user_choices(struct arrow_t *arrows, int arrows_nb,
static void print_user_choices(struct arrow_t *arrows, int arrows_nb,
int space_size_x, int space_size_y, int space_size_z,
int prefer, int show_all, int show_array, int style)
int show_array, int show_space_design)
{
if (show_array) printf("\n");
printf("model + user constraints :\tspace size x,y,z = %d,%d,%d\t", space_size_x, space_size_y, space_size_z);
if (show_all && prefer == 0) printf("prefer = %d <> show all grids", prefer);
if (show_all && prefer == 1) printf("prefer = %d <> show no grid", prefer);
if (show_all && prefer > 1) printf("show grids according rule (%d)", prefer);
if (style) printf("orientations grilles alternées");
printf("model + user constraints :\tspace size x,y,z = %d,%d,%d\tarrows nb = %d\t",\
space_size_x, space_size_y, space_size_z, arrows_nb);
if (show_space_design) printf("orientations grilles alternées");
printf("\n");
if (show_all) printf("\
initial arrows data with arrows_nb = %d\n", arrows_nb);
if (show_array) show_arrows_array (arrows, arrows_nb);
}
/*
* Prints vertex and lines buffers_states (sizes) at major steps and at the end of a session.
* Major steps are creation of grids and creation of arrows
* Arithmetic verification is provided at each step
*/
static void show_buffers_states(int space_X, int space_Y, int space_Z, int arrows_nb,
int offset_after_grids, int buffer_vertex_size,
int buffer_lines_size_after_cubes, int buffer_lines_size)
{
int offset_after_arrows = buffer_vertex_size / 3, difference = offset_after_arrows - offset_after_grids;
printf("\n - - - - - - - - - - - - - - - - - - - - - - - - - - - -");
printf("\n buffer_vertex_offset_after grids = %6d\t%6d = (x+1)*(y+1)*(z+1); <--> (x,y,z = %d,%d,%d)",\
offset_after_grids, (space_X + 1)*(space_Y + 1)*(space_Z + 1), space_X, space_Y, space_Z);
printf("\n buffer_vertex_offset_after arrows = %6d\t%6d = %d + %d; <--> %d = 12 x %d (there are %d cubes)",\
offset_after_arrows, offset_after_arrows, offset_after_grids,\
difference, difference, difference / 12, difference / 12);
printf("\n buffer_lines_offset after cubes = %6d\t%6d = 2 * (%dx%d + %dx%d + %dx%d); <--> 2 * (x*y + x*z + y*z)",\
buffer_lines_size_after_cubes, ((space_X+1) * (space_Y+1) + (space_X+1) * (space_Z+1) + (space_Y+1) * (space_Z+1)) * 2,
space_X+1, space_Y+1, space_X+1, space_Z+1, space_Y+1, space_Z+1);
printf("\n buffer_lines_offset after arrows = %6d\t%6d = %d + %d; <--> %d = (3 + 4) x 2 x %d (arrows_nb = %d)",\
buffer_lines_size, buffer_lines_size, buffer_lines_size_after_cubes,\
buffer_lines_size - buffer_lines_size_after_cubes, arrows_nb * 14, arrows_nb, arrows_nb);
if (arrows_nb < 0) // LOL ! This error no more exists !
printf("\n ERR : %d - %d = %d %d = %d x %d\n",\
arrows_nb * 14, buffer_lines_size - buffer_lines_size_after_cubes,\
arrows_nb * 14 - (buffer_lines_size - buffer_lines_size_after_cubes),\
arrows_nb * 14 - (buffer_lines_size - buffer_lines_size_after_cubes),\
(arrows_nb * 14 - (buffer_lines_size - buffer_lines_size_after_cubes)) / arrows_nb, arrows_nb);
if (arrows_nb > 1)
printf("\n WARNING In this test, it may happens that some arrows (whatever their weights) are drawn superimposed (check the list).\n");
else printf("\n");
if (show_array) print_arrows_array (arrows, arrows_nb);
}
@ -662,14 +618,14 @@ static void show_buffers_states(int space_X, int space_Y, int space_Z, int arrow
/*
* Assigns a new weight to the arrow at address (address)
* Assigns a new load to the arrow at address (address)
*/
static int rewrite_arrow (int arrows_nb, int address, int weight, int site, int x, int y, int z)
static int rewrite_arrow (int arrows_nb, int address, int load, int site, int x, int y, int z)
{
arrows[address].load = weight;
arrows[address].load = load;
// if (! TEST)
// show_arrows_array (arrows, arrows_nb);
// print_arrows_array (arrows, arrows_nb);
return arrows_nb;
}
@ -678,7 +634,7 @@ static int rewrite_arrow (int arrows_nb, int address, int weight, int site, int
* Creates a new arrow at address (address)
* NB Weights (or loads) are NOT added
*/
static inline int create_arrow (int arrows_nb, int weight, int site, int x, int y, int z)
static inline int create_arrow (int arrows_nb, int load, int site, int x, int y, int z)
{
void *newptr = g_realloc(arrows, (arrows_nb + 1) * sizeof(struct arrow_t));
@ -687,7 +643,7 @@ static inline int create_arrow (int arrows_nb, int weight, int site, int x, int
else
perror("Can't allocate new arrow buffer!\n");
arrows[arrows_nb].load = weight;
arrows[arrows_nb].load = load;
arrows[arrows_nb].site = site;
arrows[arrows_nb].x = x;
arrows[arrows_nb].y = y;
@ -696,7 +652,7 @@ static inline int create_arrow (int arrows_nb, int weight, int site, int x, int
arrows_nb ++;
// if (! TEST)
// show_arrows_array (arrows, arrows_nb);
// print_arrows_array (arrows, arrows_nb);
return arrows_nb;
}
@ -725,7 +681,7 @@ static inline int erase_arrow (int arrows_nb, int address, int site, int x, int
perror("Can't allocate new arrow buffer!\n");
// if (! TEST)
// show_arrows_array (arrows, arrows_nb);
// print_arrows_array (arrows, arrows_nb);
return arrows_nb;
}
@ -769,9 +725,9 @@ static inline int set_arrow (struct arrow_t *arrows, int arrows_nb, int requeste
if (address >= 0 && current_weight != requested_weight)
return rewrite_arrow (arrows_nb, address/5, requested_weight, site, x, y, z);
// if (! TEST && address >= 0 && current_weight == requested_weight) show_arrows_array(arrows, arrows_nb, x, y, z);
// if (! TEST && address >= 0 && current_weight == requested_weight) print_arrows_array(arrows, arrows_nb, x, y, z);
// if (! TEST && address == -1 && requested_weight == 0) show_arrows_array(arrows, arrows_nb, x, y, z);
// if (! TEST && address == -1 && requested_weight == 0) print_arrows_array(arrows, arrows_nb, x, y, z);
return arrows_nb;
}
@ -879,11 +835,10 @@ void __attribute__((optimize("no-unroll-loops"))) main_test_graphics (void)
space_Z = 1 + rand() % arbitrary;
int density_max = space_X * space_Y * space_Z;
int max = fmax(space_X, space_Y); max = fmax(max, space_Z);
int pref_show_grids = 1; // 0, 1, 2, 3, 5, 6, 10, 15, 30, etc
// xyz, 0, x, y, z, xy, xz, yz, xyz
int weight = 0, site = 0, x = 0, y = 0, z = 0;// stx = space_Z * space_Y, sty = space_Z, stz = 1, arrow_offset = 0;
int style = 0;
int show_space_design = 0, print_arrows_array = 0;
int load = 0, site = 0, x = 0, y = 0, z = 0;
int specif_arrows_nb = rand() % density_max / 3;
int arrows_nb = 0;
@ -896,8 +851,7 @@ void __attribute__((optimize("no-unroll-loops"))) main_test_graphics (void)
rand() % space_Z); // z
}
show_user_choices(arrows, arrows_nb, space_X, space_Y, space_Z, pref_show_grids, 1, 0, style);
if (0) show_arrows_array (arrows, arrows_nb);
print_user_choices(arrows, arrows_nb, space_X, space_Y, space_Z, print_arrows_array, show_space_design);
/* DATA ARE NOW ALL SPECIFIED - DRAWING CAN START */
@ -906,30 +860,27 @@ void __attribute__((optimize("no-unroll-loops"))) main_test_graphics (void)
offset_vertex += write_space_ridges (offset_vertex, offset_colors, offset_lines, space_X, space_Y, space_Z);
offset_colors = offset_vertex;
offset_vertex += write_grids_on_space_faces (offset_vertex, offset_colors, offset_lines, space_X, space_Y, space_Z, style);
offset_vertex += write_grids_on_space_faces (offset_vertex, offset_colors, offset_lines, space_X, space_Y, space_Z, show_space_design);
offset_colors = offset_vertex;
/* ARROWS */
for (int i = 0; i < arrows_nb; i++) {
weight = arrows[i].load;
site = arrows[i].site;
x = arrows[i].x;
y = arrows[i].y;
z = arrows[i].z;
load = arrows[i].load;
site = arrows[i].site;
x = arrows[i].x;
y = arrows[i].y;
z = arrows[i].z;
offset_vertex += write_one_arrow(offset_vertex, offset_colors, offset_lines,
offset_vertex += write_one_arrow(offset_vertex,
space_X, space_Y, space_Z,
weight, site, x, y, z);
load, site, x, y, z);
offset_colors = offset_vertex;
}
free(arrows); // ? free (space)
// ? free (space) TODO
free(arrows);
arrows = NULL;
arrows_nb = 0;
/* show_buffers_states(space_X, space_Y, space_Z, arrows_nb, */
/* offset_after_grids, buffer_vertex_size, */
/* buffer_lines_size_after_cubes, buffer_lines_size); */
}

171
src/graphics/grid.c
View File

@ -25,16 +25,6 @@
#include "../../include/base.h"
#include "../../include/graphics.h"
/* void graphics_write_vertex (GLfloat x, GLfloat y, GLfloat z) { */
/* buffer_vertex_origin = g_realloc (buffer_vertex_origin, (buffer_vertex_size + 3) * sizeof(GLfloat)); */
/* buffer_vertex_origin[buffer_vertex_size + 0] = x; */
/* buffer_vertex_origin[buffer_vertex_size + 1] = y; */
/* buffer_vertex_origin[buffer_vertex_size + 2] = z; */
/* buffer_vertex_size += 3; */
/* //printf("Created vertex (%f,%f,%f), size is %d\n", x,y,z, buffer_vertex_size); */
/* } */
int write_space_ridges (long offset_vertex, long offset_colors, long offset_lines, long x, long y, long z)
{
float max = fmax(x, y); max = fmax(max, z);
@ -158,164 +148,3 @@ long write_grids_on_space_faces (long offset_vertex, long offset_colors, long of
}
/*
* Writes grid lines intersections to vertex and color buffers
*
* @param coords long (x,y,z)
*
* @return void
*/
void grid_write_intersections (long x, long y, long z)
{
float i, j, k, vx, vy, vz, max = fmax(x, y);
max = fmax(max, z);
for (i = 0; i <= x; i++)
for (j = 0; j <= y; j++)
for (k = 0; k <= z; k++){
vx = (2 * i / x - 1) * x / max;
vy = (2 * j / y - 1) * y / max;
vz = (2 * k / z - 1) * z / max;
graphics_write_vertex (vx, vy, vz);
// graphics_write_color (0.64f,0.64f,0.64f);
};
}
/*
* Writes grid ridges to vertex and color buffers
*
* @param coords long (x,y,z), step_x, step_y, step_z
*
* @return void
*/
void grid_write_marks (long x, long y, long z)
{
long step_z = 1; // step_x = (z + 1) * (y + 1), step_y = z + 1;
//int delta = 1.0f;
for (int i=1; i < z; i ++) {
// graphics_write_vertex (delta, delta, i); graphics_write_vertex (delta, - delta, i);
// graphics_write_color (0.3f,0.3f,0.3f); graphics_write_color (0.3f,0.3f,0.3f);
// graphics_write_line (0, step_z * z + step_y * y + step_x * x);
graphics_write_line ( i * step_z, i * step_z + x);
// graphics_write_line ( i * step_z, i * step_z + y);
}
}
void grid_write_ridges (long x, long y, long z)
{
long step_x = (z + 1) * (y + 1),
step_y = z + 1,
step_z = 1;
long r_000 = step_z * 0 + step_y * 0 + step_x * 0,
r_100 = step_z * 0 + step_y * 0 + step_x * x,
r_010 = step_z * 0 + step_y * y + step_x * 0,
r_001 = step_z * z + step_y * 0 + step_x * 0,
r_011 = step_z * z + step_y * y + step_x * 0,
r_101 = step_z * z + step_y * 0 + step_x * x,
r_110 = step_z * 0 + step_y * y + step_x * x,
r_111 = step_z * z + step_y * y + step_x * x;
graphics_write_line (r_000, r_100); graphics_write_line (r_111, r_011);
graphics_write_line (r_000, r_010); graphics_write_line (r_111, r_101);
graphics_write_line (r_000, r_001); graphics_write_line (r_111, r_110);
graphics_write_line (r_100, r_110); graphics_write_line (r_011, r_001);
graphics_write_line (r_100, r_101); graphics_write_line (r_011, r_010);
graphics_write_line (r_010, r_110); graphics_write_line (r_101, r_001);
}
/*
* Writes grid lines for x axis to vertex and color buffers
*
* @param coords long (x,y,z)
*
* @return void
*/
void grid_write_x (long x, long y, long z)
{
long step_z = 1,
step_y = z + 1,
step_x = (z + 1) * (y + 1);
x ++; y ++; z ++;
float calcul = 0;
for (int u = 0; u < y; u ++){
for (int w = 0; w < x; w ++){
calcul = step_x * w + step_y * u;
graphics_write_line (calcul, calcul + step_y - step_z);
}
}
}
/*
* Writes grid lines for y axis to vertex and color buffers
*
* @param coords long (x,y,z)
*
* @return void
*/
void grid_write_y (long x, long y, long z)
{
long step_z = 1,
step_y = z + 1,
step_x = (z + 1) * (y + 1);
x ++; y ++; z ++;
float calcul = 0;
for (int u = 0; u < z; u++) {
for (int w = 0; w < x; w ++){
calcul = step_x * w + step_z * u;
graphics_write_line (calcul, calcul + step_x - step_y);
}
}
}
/*
* Writes grid lines for z axis to vertex and color buffers
*
* @param coords long (x,y,z)
*
* @return void
*/
void grid_write_z (long x, long y, long z)
{
long step_z = 1,
step_y = z + 1,
step_x = (z + 1) * (y + 1);
x ++; y ++; z ++;
float calcul = 0;
for (int u = 0; u < z; u ++){
for (int w = 0; w < y; w ++){
calcul = step_y * w + step_z * u;
graphics_write_line (calcul, calcul + step_x * (x - 1));
}
}
}