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Cube.rock extensions: (1) New mode for all platforms - hidden line. (2) Ability to pause animation. Note - some button assignment changes were required. (3) Proper backface removal, used for both solid and hidden line mode.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7135 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2005-07-13 20:40:46 +00:00
parent d36567d370
commit 680fe7082f
1 changed files with 231 additions and 173 deletions
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404
apps/plugins/cube.c
View file

@ -9,7 +9,7 @@
*
* Copyright (C) 2002 Damien Teney
* modified to use int instead of float math by Andreas Zwirtes
* binary fixed point format, LCD aspect handling and solid mode by Jens Arnold
* heavily extended by Jens Arnold
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
@ -27,47 +27,57 @@
/* variable button definitions */
#if CONFIG_KEYPAD == RECORDER_PAD
#define CUBE_QUIT BUTTON_OFF
#define CUBE_X_INC BUTTON_RIGHT
#define CUBE_X_DEC BUTTON_LEFT
#define CUBE_Y_INC BUTTON_UP
#define CUBE_Y_DEC BUTTON_DOWN
#define CUBE_Z_INC BUTTON_F2
#define CUBE_Z_DEC BUTTON_F1
#define CUBE_HIGHSPEED BUTTON_PLAY
#define CUBE_QUIT BUTTON_OFF
#define CUBE_X_INC BUTTON_RIGHT
#define CUBE_X_DEC BUTTON_LEFT
#define CUBE_Y_INC BUTTON_UP
#define CUBE_Y_DEC BUTTON_DOWN
#define CUBE_Z_INC BUTTON_F2
#define CUBE_Z_DEC BUTTON_F1
#define CUBE_MODE BUTTON_F3
#define CUBE_PAUSE BUTTON_PLAY
#define CUBE_HIGHSPEED BUTTON_ON
#elif CONFIG_KEYPAD == PLAYER_PAD
#define CUBE_QUIT BUTTON_STOP
#define CUBE_X_INC BUTTON_RIGHT
#define CUBE_X_DEC BUTTON_LEFT
#define CUBE_Y_INC (BUTTON_ON | BUTTON_RIGHT)
#define CUBE_Y_DEC (BUTTON_ON | BUTTON_LEFT)
#define CUBE_Z_INC (BUTTON_MENU | BUTTON_RIGHT)
#define CUBE_Z_DEC (BUTTON_MENU | BUTTON_LEFT)
#define CUBE_HIGHSPEED BUTTON_PLAY
#define CUBE_QUIT BUTTON_STOP
#define CUBE_X_INC BUTTON_RIGHT
#define CUBE_X_DEC BUTTON_LEFT
#define CUBE_Y_INC (BUTTON_ON | BUTTON_RIGHT)
#define CUBE_Y_DEC (BUTTON_ON | BUTTON_LEFT)
#define CUBE_Z_INC (BUTTON_MENU | BUTTON_RIGHT)
#define CUBE_Z_DEC (BUTTON_MENU | BUTTON_LEFT)
#define CUBE_MODE_PRE BUTTON_MENU
#define CUBE_MODE (BUTTON_MENU | BUTTON_REL)
#define CUBE_PAUSE BUTTON_PLAY
#define CUBE_HIGHSPEED_PRE BUTTON_ON
#define CUBE_HIGHSPEED (BUTTON_ON | BUTTON_REL)
#elif CONFIG_KEYPAD == ONDIO_PAD
#define CUBE_QUIT BUTTON_OFF
#define CUBE_X_INC BUTTON_RIGHT
#define CUBE_X_DEC BUTTON_LEFT
#define CUBE_Y_INC BUTTON_UP
#define CUBE_Y_DEC BUTTON_DOWN
#define CUBE_Z_INC (BUTTON_MENU | BUTTON_UP)
#define CUBE_Z_DEC (BUTTON_MENU | BUTTON_DOWN)
#define CUBE_HIGHSPEED_PRE BUTTON_MENU
#define CUBE_HIGHSPEED (BUTTON_MENU | BUTTON_REL)
#define CUBE_QUIT BUTTON_OFF
#define CUBE_X_INC BUTTON_RIGHT
#define CUBE_X_DEC BUTTON_LEFT
#define CUBE_Y_INC BUTTON_UP
#define CUBE_Y_DEC BUTTON_DOWN
#define CUBE_Z_INC (BUTTON_MENU | BUTTON_UP)
#define CUBE_Z_DEC (BUTTON_MENU | BUTTON_DOWN)
#define CUBE_MODE_PRE BUTTON_MENU
#define CUBE_MODE (BUTTON_MENU | BUTTON_REL)
#define CUBE_PAUSE (BUTTON_MENU | BUTTON_LEFT)
#define CUBE_HIGHSPEED (BUTTON_MENU | BUTTON_RIGHT)
#elif (CONFIG_KEYPAD == IRIVER_H100_PAD) || \
(CONFIG_KEYPAD == IRIVER_H300_PAD)
#define CUBE_QUIT BUTTON_OFF
#define CUBE_X_INC BUTTON_RIGHT
#define CUBE_X_DEC BUTTON_LEFT
#define CUBE_Y_INC BUTTON_UP
#define CUBE_Y_DEC BUTTON_DOWN
#define CUBE_Z_INC (BUTTON_ON | BUTTON_UP)
#define CUBE_Z_DEC (BUTTON_ON | BUTTON_DOWN)
#define CUBE_MODE BUTTON_MODE
#define CUBE_HIGHSPEED BUTTON_SELECT
#define CUBE_QUIT BUTTON_OFF
#define CUBE_X_INC BUTTON_RIGHT
#define CUBE_X_DEC BUTTON_LEFT
#define CUBE_Y_INC BUTTON_UP
#define CUBE_Y_DEC BUTTON_DOWN
#define CUBE_Z_INC (BUTTON_ON | BUTTON_UP)
#define CUBE_Z_DEC (BUTTON_ON | BUTTON_DOWN)
#define CUBE_MODE BUTTON_MODE
#define CUBE_PAUSE_PRE BUTTON_ON
#define CUBE_PAUSE (BUTTON_ON | BUTTON_REL)
#define CUBE_HIGHSPEED BUTTON_SELECT
#endif
@ -101,17 +111,11 @@ struct line {
int start, end;
};
#if LCD_DEPTH > 1
struct face {
int corner1, corner2, corner3, corner4;
int corner[4];
int line[4];
};
struct zsort {
int place;
long sum;
};
#endif
/* initial, unrotated cube corners */
static const struct point_3D sommet[8] =
{
@ -129,28 +133,47 @@ static const struct point_3D sommet[8] =
static const struct line lines[12] =
{
{0, 1}, {1, 2}, {2, 3}, {3, 0},
{4, 5}, {5, 6}, {6, 7}, {7, 4},
{4, 7}, {7, 6}, {6, 5}, {5, 4},
{0, 4}, {1, 5}, {2, 6}, {3, 7}
};
#if LCD_DEPTH > 1
/* The 6 faces of the cube */
static bool lines_drawn[12];
/* The 6 faces of the cube; points are in clockwise order when viewed
from the outside */
static const struct face faces[6] =
{
{0, 1, 2, 3}, {4, 5, 6, 7},
{0, 1, 5, 4}, {3, 2, 6, 7},
{0, 3, 7, 4}, {1, 2, 6, 5}
{{0, 1, 2, 3}, {0, 1, 2, 3}},
{{4, 7, 6, 5}, {4, 5, 6, 7}},
{{0, 4, 5, 1}, {8, 7, 9, 0}},
{{2, 6, 7, 3}, {10, 5, 11, 2}},
{{0, 3, 7, 4}, {3, 11, 4, 8}},
{{1, 5, 6, 2}, {9, 6, 10, 1}}
};
static bool solid = true;
#if LCD_DEPTH > 1
static const int face_colors[6] =
{
2*MAX_LEVEL/3, 2*MAX_LEVEL/3, MAX_LEVEL/3, MAX_LEVEL/3, 0, 0
};
#endif
enum {
#if LCD_DEPTH > 1
SOLID,
#endif
HIDDEN_LINES,
WIREFRAME,
NUM_MODES
};
static int mode = 0;
static struct point_3D point3D[8];
static struct point_2D point2D[8];
static long matrice[3][3];
static int nb_points = 8;
static const int nb_points = 8;
static long z_off = 600;
/* Precalculated sine and cosine * 16384 (fixed point 18.14) */
@ -294,93 +317,103 @@ static void cube_viewport(void)
}
}
#if LCD_DEPTH > 1
static int compfunc(const void * a, const void * b)
{
return ((struct zsort *)b)->sum - ((struct zsort *)a)->sum;
}
#endif
static void cube_draw(void)
{
int i;
#if LCD_DEPTH > 1
int place;
struct zsort z_avgs_f[6];
int i, j, line;
if (solid)
switch (mode)
{
#if LCD_DEPTH > 1
case SOLID:
for (i = 0; i < 6; i++)
{
z_avgs_f[i].place = i;
z_avgs_f[i].sum = point3D[faces[i].corner1].z
+ point3D[faces[i].corner2].z
+ point3D[faces[i].corner3].z
+ point3D[faces[i].corner4].z;
}
/* backface culling; if the shape winds counter-clockwise, we are
* looking at the backface, and the (simplified) cross product
* is < 0. Do not draw it. */
if (0 >= (point2D[faces[i].corner[1]].x - point2D[faces[i].corner[0]].x)
* (point2D[faces[i].corner[2]].y - point2D[faces[i].corner[1]].y)
- (point2D[faces[i].corner[1]].y - point2D[faces[i].corner[0]].y)
* (point2D[faces[i].corner[2]].x - point2D[faces[i].corner[1]].x))
continue;
rb->qsort(z_avgs_f, 6, sizeof(struct zsort), compfunc);
rb->lcd_set_foreground(face_colors[i]);
xlcd_filltriangle(point2D[faces[i].corner[0]].x,
point2D[faces[i].corner[0]].y,
point2D[faces[i].corner[1]].x,
point2D[faces[i].corner[1]].y,
point2D[faces[i].corner[2]].x,
point2D[faces[i].corner[2]].y);
xlcd_filltriangle(point2D[faces[i].corner[0]].x,
point2D[faces[i].corner[0]].y,
point2D[faces[i].corner[2]].x,
point2D[faces[i].corner[2]].y,
point2D[faces[i].corner[3]].x,
point2D[faces[i].corner[3]].y);
for (i = 3; i < 6; i++)
{ /* we can only see the front 3 faces at best */
switch(z_avgs_f[i].place)
{
case 0:
case 1:
rb->lcd_set_foreground(2*MAX_LEVEL/3);
break;
case 2:
case 3:
rb->lcd_set_foreground(MAX_LEVEL/3);
break;
case 4:
case 5:
rb->lcd_set_foreground(0);
break;
}
place = z_avgs_f[i].place;
xlcd_filltriangle(point2D[faces[place].corner1].x,
point2D[faces[place].corner1].y,
point2D[faces[place].corner2].x,
point2D[faces[place].corner2].y,
point2D[faces[place].corner3].x,
point2D[faces[place].corner3].y);
xlcd_filltriangle(point2D[faces[place].corner1].x,
point2D[faces[place].corner1].y,
point2D[faces[place].corner3].x,
point2D[faces[place].corner3].y,
point2D[faces[place].corner4].x,
point2D[faces[place].corner4].y);
}
rb->lcd_set_foreground(0);
}
else
break;
#endif /* LCD_DEPTH > 1 */
{
case HIDDEN_LINES:
rb->memset(lines_drawn, 0, sizeof(lines_drawn));
for (i = 0; i < 6; i++)
{
/* backface culling; if the shape winds counter-clockwise, we are
* looking at the backface, and the (simplified) cross product
* is < 0. Do not draw it. */
if (0 >= (point2D[faces[i].corner[1]].x - point2D[faces[i].corner[0]].x)
* (point2D[faces[i].corner[2]].y - point2D[faces[i].corner[1]].y)
- (point2D[faces[i].corner[1]].y - point2D[faces[i].corner[0]].y)
* (point2D[faces[i].corner[2]].x - point2D[faces[i].corner[1]].x))
continue;
for (j = 0; j < 4; j++)
{
line = faces[i].line[j];
if (!lines_drawn[line])
{
lines_drawn[line] = true;
MYLCD(drawline)(point2D[lines[line].start].x,
point2D[lines[line].start].y,
point2D[lines[line].end].x,
point2D[lines[line].end].y);
}
}
}
break;
case WIREFRAME:
for (i = 0; i < 12; i++)
MYLCD(drawline)(point2D[lines[i].start].x,
point2D[lines[i].start].y,
point2D[lines[i].end].x,
point2D[lines[i].end].y);
break;
}
}
enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
{
int t_disp=0;
char buffer[30];
int t_disp = 0;
int button;
int lastbutton=0;
int xa=0;
int ya=0;
int za=0;
int xs=1;
int ys=3;
int zs=1;
bool highspeed=0;
bool exit=0;
int lastbutton = BUTTON_NONE;
int xa = 0;
int ya = 0;
int za = 0;
int xs = 1;
int ys = 3;
int zs = 1;
bool highspeed = false;
bool paused = false;
bool redraw = true;
bool exit = false;
TEST_PLUGIN_API(api);
(void)(parameter);
@ -407,20 +440,27 @@ enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
else
rb->sleep(4);
MYLCD(clear_display)();
cube_rotate(xa,ya,za);
cube_viewport();
cube_draw();
if (redraw)
{
MYLCD(clear_display)();
cube_rotate(xa, ya, za);
cube_viewport();
cube_draw();
redraw = false;
}
#ifdef HAVE_LCD_BITMAP
if (t_disp>0)
if (t_disp > 0)
{
t_disp--;
rb->snprintf(buffer, sizeof(buffer), "x:%d y:%d z:%d h:%d",
xs, ys, zs, highspeed);
rb->lcd_putsxy(0, LCD_HEIGHT-8, buffer);
if (t_disp == 0)
redraw = true;
}
#else
if (t_disp>0)
if (t_disp > 0)
{
if (t_disp == DISP_TIME)
{
@ -444,80 +484,98 @@ enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
#endif
MYLCD(update)();
xa+=xs;
if (xa>359)
xa-=360;
if (xa<0)
xa+=360;
ya+=ys;
if (ya>359)
ya-=360;
if (ya<0)
ya+=360;
za+=zs;
if (za>359)
za-=360;
if (za<0)
za+=360;
if (!paused)
{
xa += xs;
if (xa > 359)
xa -= 360;
if (xa < 0)
xa += 360;
ya += ys;
if (ya > 359)
ya -= 360;
if (ya < 0)
ya += 360;
za += zs;
if (za > 359)
za -= 360;
if (za < 0)
za += 360;
redraw = true;
}
button = rb->button_get(false);
switch(button)
switch (button)
{
case CUBE_X_INC:
xs+=1;
if (xs>10)
xs=10;
t_disp=DISP_TIME;
if (xs < 10)
xs++;
t_disp = DISP_TIME;
break;
case CUBE_X_DEC:
xs-=1;
if (xs<-10)
xs=-10;
t_disp=DISP_TIME;
if (xs > -10)
xs--;
t_disp = DISP_TIME;
break;
case CUBE_Y_INC:
ys+=1;
if (ys>10)
ys=10;
t_disp=DISP_TIME;
if (ys < 10)
ys++;
t_disp = DISP_TIME;
break;
case CUBE_Y_DEC:
ys-=1;
if (ys<-10)
ys=-10;
t_disp=DISP_TIME;
if (ys > -10)
ys--;
t_disp = DISP_TIME;
break;
case CUBE_Z_INC:
zs+=1;
if (zs>10)
zs=10;
t_disp=DISP_TIME;
if (zs < 10)
zs++;
t_disp = DISP_TIME;
break;
case CUBE_Z_DEC:
zs-=1;
if (zs<-10)
zs=-10;
t_disp=DISP_TIME;
if (zs > -10)
zs--;
t_disp = DISP_TIME;
break;
#ifdef CUBE_MODE
case CUBE_MODE:
solid = !solid;
break;
#endif
case CUBE_HIGHSPEED:
#ifdef CUBE_HIGHSPEED_PRE
if (lastbutton!=CUBE_HIGHSPEED_PRE)
#ifdef CUBE_MODE_PRE
if (lastbutton != CUBE_MODE_PRE)
break;
#endif
highspeed=!highspeed;
t_disp=DISP_TIME;
if (++mode >= NUM_MODES)
mode = 0;
redraw = true;
break;
case CUBE_PAUSE:
#ifdef CUBE_PAUSE_PRE
if (lastbutton != CUBE_PAUSE_PRE)
break;
#endif
paused = !paused;
break;
case CUBE_HIGHSPEED:
#ifdef CUBE_HIGHSPEED_PRE
if (lastbutton != CUBE_HIGHSPEED_PRE)
break;
#endif
highspeed = !highspeed;
t_disp = DISP_TIME;
break;
case CUBE_QUIT:
exit=1;
exit = true;
break;
default:
if(rb->default_event_handler(button) == SYS_USB_CONNECTED)
if (rb->default_event_handler(button) == SYS_USB_CONNECTED)
{
#ifdef HAVE_LCD_CHARCELLS
pgfx_release();
@ -526,8 +584,8 @@ enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
}
break;
}
if (button!=BUTTON_NONE)
lastbutton=button;
if (button != BUTTON_NONE)
lastbutton = button;
}
#ifdef HAVE_LCD_CHARCELLS