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Tutoriel Casio : Liste des meilleures fonctions
Tutoriel rédigé le : 2013-10-06 10:59  par Lancelot  Catégorie : C/C++/ASM  Calculatrice : Fx-CG 10/20

Discutez de ce tutoriel sur le forum >> Voir le sujet dédié (81 commentaires)

Liste des meilleures fonctions

Bonjour à tous et à toutes (oui, je pense qu'il n'y a pas que des hommes sur PC )

Afin de faciliter et d'encourager le travaille du programmeur en C, C++ sur fx-CG 20, j'ai décider d'ouvrir ce topic pour poster les meilleurs fonctions (affichage d'une image, Getkey, ...) que vous trouvez utile pour programmer. ce topic a comme but de faciliter la découverte de ces fonctions pour les nouveaux programmeurs (comme moi ) mais aussi permettre au expérimenté de faire part de leurs meilleurs fonctions qu'il ont crées ou utilisent

En voici celles qui me sont arrivées:
Getkey
Getkey
Le .c
int keydown(int basic_keycode)
{
    const unsigned short* keyboard_register = (unsigned short*)0xA44B0000;
    [purple]int[/purple] row, col, word, bit;
    row = basic_keycode%10;
    col = basic_keycode/10-1;
    word = row>>1;
    bit = col + 8*(row&1);
    [b][blue]return[/blue][/b] (0 != (keyboard_register[word] & 1<<bit));
}


Le .h
[brown]#ifndef _KEY[/brown]
[brown]#define _KEY[/brown]

[purple]int[/purple] key_down(int basic_keycode);

[b][green]/***************/
/** Key codes **/
/***************/[/green][/b]
[brown]#define K_F1    79[/brown]
[brown]#define K_F2    69[/brown]
[brown]#define K_F3    59[/brown]
[brown]#define K_F4    49[/brown]
[brown]#define K_F5    39[/brown]
[brown]#define K_F6    29[/brown]

[brown]#define K_SHIFT 78[/brown]
[brown]#define K_OPTN  68[/brown]
[brown]#define K_VARS  58[/brown]
[brown]#define K_MENU  48[/brown]
[brown]#define K_LEFT  38[/brown]
[brown]#define K_UP    28[/brown]

[brown]#define K_ALPHA 77[/brown]
[brown]#define K_SQR   67[/brown]
[brown]#define K_EXPO  57[/brown]
[brown]#define K_EXIT  47[/brown]
[brown]#define K_DOWN  37[/brown]
[brown]#define K_RIGHT 27[/brown]

[brown]#define K_THETA 76[/brown]
[brown]#define K_LOG   66[/brown]
[brown]#define K_LN    56[/brown]
[brown]#define K_SIN   46[/brown]
[brown]#define K_COS   36[/brown]
[brown]#define K_TAN   26[/brown]

[brown]#define K_FRAC  75[/brown]
[brown]#define K_FD    65[/brown]
[brown]#define K_LPAR  55[/brown]
[brown]#define K_RPAR  45[/brown]
[brown]#define K_COMMA 35[/brown]
[brown]#define K_STORE 25[/brown]

[brown]#define K_7     74[/brown]
[brown]#define K_8     64[/brown]
[brown]#define K_9     54[/brown]
[brown]#define K_DEL   34[/brown]

[brown]#define K_4     73[/brown]
[brown]#define K_5     63[/brown]
[brown]#define K_6     53[/brown]
[brown]#define K_MULT  43[/brown]
[brown]#define K_DIV   33[/brown]

[brown]#define K_1     72[/brown]
[brown]#define K_2     62[/brown]
[brown]#define K_3     52[/brown]
[brown]#define K_PLUS  42[/brown]
[brown]#define K_MINUS 32[/brown]

[brown]#define K_0     71[/brown]
[brown]#define K_DOT   61[/brown]
[brown]#define K_EXP   51[/brown]
[brown]#define K_NEG   41[/brown]
[brown]#define K_EXE   31[/brown]

[brown]#define K_AC    10[/brown]

#endif [green]//_KEY[/green]




Afficher un pixel
Afficher un pixel
void point(int x, int y, int color)
{
    char* VRAM = (char*)0xA8000000;
    VRAM += 2*(y*LCD_WIDTH_PX + x);
    *(VRAM++) = (color&0x0000FF00)>>8;
    *(VRAM++) = (color&0x000000FF);
    return;
}

Afficher un pixel avec la transparence
Afficher un pixel avec la transparence
static void text_drawPoint(int x, [purple]int[/purple] y, [purple]int[/purple] size, [purple]int[/purple] color, [purple]int[/purple] alpha)
{
    [purple]int[/purple] i, j;
    short* vram = VRAM;
    [b][blue]if[/blue][/b](x+size>=LCD_WIDTH_PX || x<0 || y+size>=LCD_HEIGHT_PX || y<0) [b][blue]return[/blue][/b];
    vram += y*LCD_WIDTH_PX + x;
    [b][blue]if[/blue][/b](alpha == [maroon]32[/maroon]) {
        [b][blue]for[/blue][/b](i=size ; i ; i--, vram+=LCD_WIDTH_PX-size) {
            [b][blue]for[/blue][/b](j=size ; j ; j--) {
                *(vram++) = color;
            }
        }
    } [b][blue]else[/blue][/b] {
        [b][blue]for[/blue][/b](i=size ; i ; i--, vram+=LCD_WIDTH_PX-size) {
            [b][blue]for[/blue][/b](j=size ; j ; j--) {
                *(vram++) = ((((color & 0xf81f) * alpha + (*vram & 0xf81f) * (32-alpha)) >> 5) & 0xf81f) |
                            ((((color & 0x07e0) * alpha + (*vram & 0x07e0) * (32-alpha)) >> 5) & 0x07e0);
            }
        }
    }
}

Valeur d'un pixel
Valeur d'un pixel
short CL_Getpixel(short x, short y)
{
     short *VRAM = GetVRAMAdress();
     [b][blue]return[/blue][/b] *(VRAM + (y * LCD_WIDTH_PX) + x);
}

Afficher une ligne
Afficher une ligne
void line(int x1, [purple]int[/purple] y1, [purple]int[/purple] x2, [purple]int[/purple] y2, short color)
{
    [purple]int[/purple] i, x, y, dx, dy, sx, sy, cumul;
    x = x1;
    y = y1;
    dx = x2 - x1;
    dy = y2 - y1;
    sx = sgn(dx);
    sy = sgn(dy);
    dx = abs(dx);
    dy = abs(dy);
    Bdisp_SetPoint_VRAM( x,  y,(int)  color );
    [b][blue]if[/blue][/b](dx > dy)
    {
        cumul = dx / 2;
        [b][blue]for[/blue][/b](i=[maroon]1[/maroon] ; i<dx ; i++)
        {
            x += sx;
            cumul += dy;
            [b][blue]if[/blue][/b](cumul > dx)
            {
                cumul -= dx;
                y += sy;
            }
            Bdisp_SetPoint_VRAM( x, y,(int)  color );
        }
    }
    [b][blue]else[/blue][/b]
    {
        cumul = dy / 2;
        [b][blue]for[/blue][/b](i=[maroon]1[/maroon] ; i<dy ; i++)
        {
            y += sy;
            cumul += dx;
            [b][blue]if[/blue][/b](cumul > dy)
            {
                cumul -= dy;
                x += sx;
            }
            Bdisp_SetPoint_VRAM(x, y,(int) color);
        }
    }
}

Tracer un cercle
Tracer un cercle
void drawCircle(int x0, [purple]int[/purple] y0, [purple]int[/purple] rayon, [purple]int[/purple] couleur)
{
   [purple]int[/purple] er = [maroon]1[/maroon] - rayon;
   [purple]int[/purple] erY = [maroon]1[/maroon];
   [purple]int[/purple] erX = -2 * rayon;
   [purple]int[/purple] x = rayon, y = [maroon]0[/maroon];

   point(x0, y0 + rayon, couleur);
   point(x0, y0 - rayon, couleur);
   point(x0 + rayon, y0, couleur);
   point(x0 - rayon, y0, couleur);

   [b][blue]while[/blue][/b](y < x)
   {
     [b][blue]if[/blue][/b](er > 0)
     {
       x--;
       erX += [maroon]2[/maroon];
       er += erX;
     }
     y++;
     erY += [maroon]2[/maroon];
     er += erY;    
     point(x0 + x, y0 + y, couleur);
     point(x0 - x, y0 + y, couleur);
     point(x0 + x, y0 - y, couleur);
     point(x0 - x, y0 - y, couleur);
     point(x0 + y, y0 + x, couleur);
     point(x0 - y, y0 + x, couleur);
     point(x0 + y, y0 - x, couleur);
     point(x0 - y, y0 - x, couleur);
   }
}

dessiner un cercle avec la transparence
dessiner un cercle avec la transparence

[brown]#define VRAM 0xA8000000[/brown]

void drawCircleAlpha(int x0, [purple]int[/purple] y0, [purple]int[/purple] rayon, [purple]int[/purple] couleur, [purple]int[/purple] alpha)
{
   [purple]int[/purple] er = [maroon]1[/maroon] - rayon;
   [purple]int[/purple] erY = [maroon]1[/maroon];
   [purple]int[/purple] erX = -2 * rayon;
   [purple]int[/purple] x = rayon, y = [maroon]0[/maroon];

   drawPoint(x0, y0 + rayon, [maroon]1[/maroon], couleur, alpha);
   drawPoint(x0, y0 - rayon, [maroon]1[/maroon], couleur, alpha);
   drawPoint(x0 + rayon, y0, [maroon]1[/maroon], couleur, alpha);
   drawPoint(x0 - rayon, y0, [maroon]1[/maroon], couleur, alpha);

   [b][blue]while[/blue][/b](y < x)
   {
     [b][blue]if[/blue][/b](error > 0)
     {
       x--;
       erX += [maroon]2[/maroon];
       er += erX;
     }
     y++;
     erY += [maroon]2[/maroon];
     er += erY;    
     drawPoint(x0 + x, y0 + y, [maroon]1[/maroon], couleur, alpha);
     drawPoint(x0 - x, y0 + y, [maroon]1[/maroon], couleur, alpha);
     drawPoint(x0 + x, y0 - y, [maroon]1[/maroon], couleur, alpha);
     drawPoint(x0 - x, y0 - y, [maroon]1[/maroon], couleur, alpha);
     drawPoint(x0 + y, y0 + x, [maroon]1[/maroon], couleur, alpha);
     drawPoint(x0 - y, y0 + x, [maroon]1[/maroon], couleur, alpha);
     drawPoint(x0 + y, y0 - x, [maroon]1[/maroon], couleur, alpha);
     drawPoint(x0 - y, y0 - x, [maroon]1[/maroon], couleur, alpha);
   }
}

static void drawPoint(int x, [purple]int[/purple] y, [purple]int[/purple] size, [purple]int[/purple] color, [purple]int[/purple] alpha)
{
     [purple]int[/purple] i, j;
     short* vram = VRAM;
     [b][blue]if[/blue][/b](x+size>=LCD_WIDTH_PX || x<0 || y+size>=LCD_HEIGHT_PX || y<0) [b][blue]return[/blue][/b];
     vram += y*LCD_WIDTH_PX + x;
     [b][blue]if[/blue][/b](alpha == [maroon]32[/maroon]) {
         [b][blue]for[/blue][/b](i=size ; i ; i--, vram+=LCD_WIDTH_PX-size) {
             [b][blue]for[/blue][/b](j=size ; j ; j--) {
                 *(vram++) = color;
             }
         }
     } [b][blue]else[/blue][/b] {
         [b][blue]for[/blue][/b](i=size ; i ; i--, vram+=LCD_WIDTH_PX-size) {
             [b][blue]for[/blue][/b](j=size ; j ; j--) {
                 *(vram++) = ((((color & 0xf81f) * alpha + (*vram & 0xf81f) * (32-alpha)) >> 5) & 0xf81f) |
                             ((((color & 0x07e0) * alpha + (*vram & 0x07e0) * (32-alpha)) >> 5) & 0x07e0);
             }
         }
     }
}


Tracer un disque
Tracer un disque
void CL_drawDiscus(int x0, [purple]int[/purple] y0, [purple]int[/purple] rayon, [purple]int[/purple] couleur)
{
     [purple]int[/purple] k;
     [purple]int[/purple] x,y,d;
     [b][blue]for[/blue][/b] (k=[maroon]0[/maroon]; k <= rayon; k++)
     {
         x = [maroon]0[/maroon];
         y = k;
         d = k - 1;
         [b][blue]while[/blue][/b] (y >= x)
         {
             CL_point( x0 + x, y0 + y, couleur);
             CL_point( x0 + y, y0 + x, couleur);
             CL_point( x0 - x, y0 + y, couleur);
             CL_point( x0 - y, y0 + x, couleur);
             CL_point( x0 + x, y0 - y, couleur);
             CL_point( x0 + y, y0 - x, couleur);
             CL_point( x0 - x, y0 - y, couleur);
             CL_point( x0 - y, y0 - x, couleur);
             [b][blue]if[/blue][/b] (d >= [maroon]2[/maroon]*x)
             {          
                 d -=[maroon]2[/maroon]*x+1;
                 x++;
             }
             [b][blue]else[/blue][/b] if (d < 2*(k-y))
             {
                 d += [maroon]2[/maroon]*y-1;
                 y--;
             }
             [b][blue]else[/blue][/b]
             {
                 d += [maroon]2[/maroon]*(y-x-1);
                 y--;
                 x++;
             }
         }
     }
}

Tracer un rectangle rempli
Tracer un rectangle rempli
void CL_Filled_Rectangle( [purple]int[/purple] xi, [purple]int[/purple] yi, [purple]int[/purple] xi2, [purple]int[/purple] yi2, unsigned short color)
{
         unsigned short* VRAM = GetVRAMAdress();
         [purple]int[/purple] i,j;
         const [purple]int[/purple] x = max(0,min(xi,xi2));
         const [purple]int[/purple] x2 = min( LCD_WIDTH_PX,max(xi,xi2));
        
         const [purple]int[/purple] y = max(0,min(yi,yi2));
         const [purple]int[/purple] y2 = min( LCD_WIDTH_PX,max(yi,yi2));
        
         const [purple]int[/purple] xm = max(x,x2);
         const [purple]int[/purple] ym = max(y,y2);
        
         const [purple]int[/purple] xe = x2-x+1;
        
         VRAM += LCD_WIDTH_PX*y + x;
         [b][blue]for[/blue][/b](j = min(y,y2); j <= ym; j++) {
                 [b][blue]for[/blue][/b](i=min(x,x2); i <= xm; i++) {
                         *(VRAM++) = color;
                 }
                 VRAM += LCD_WIDTH_PX-xe;
         }
}

tracer un polygone
tracer un polygone
void drawPoly(int xy[], int points, int color)
{
     int i;
     [b][blue]for[/blue][/b](i = [maroon]0[/maroon]; i < (points*2); i+=[maroon]2[/maroon])
     {
         [b][blue]if[/blue][/b](i < (points*2)-4)
         {
             line(xy[i ], xy[i+1], xy[i+2], xy[i+3], color);
         } [b][blue]else[/blue][/b]
         {
             line(xy[i ], xy[i+1], xy[0], xy[1], color);
         }
     }
}

Tracer un polygone rempli
Tracer un polygone rempli
static [purple]int[/purple] Filled_polygon_quicksord_partition(int *t, [purple]int[/purple] p, [purple]int[/purple] r) [green]//from MonochromeLib by PierrotLL[/green]
{
     [purple]int[/purple] i, j, x, tmp;
     j = p - 1;
     x = t[r];
     [b][blue]for[/blue][/b](i=p ; i<r ; i++)
     {
         [b][blue]if[/blue][/b](x > t[i ])
         {
             j++;
             tmp = t[j];
             t[j] = t[i ];
             t[i ] = tmp;
         }
     }
     t[r] = t[j+1];
     t[j+1] = x;
     [b][blue]return[/blue][/b] j + 1;
}

static void Filled_polygon_quicksord(int* t, [purple]int[/purple] p, [purple]int[/purple] r) [green]//from MonochromeLib by PierrotLL[/green]
{
     [purple]int[/purple] q;
     [b][blue]if[/blue][/b](p < r)
     {
         q = Filled_polygon_quicksord_partition(t, p, r);
         Filled_polygon_quicksord(t, p, q-1);
         Filled_polygon_quicksord(t, q+1, r);
     }
}


void Filled_polygon(const [purple]int[/purple] *x, const [purple]int[/purple] *y, [purple]int[/purple] nb_vertices, unsigned short color) [green]//from MonochromeLib by PierrotLL[/green]
{
     [purple]int[/purple] i, j, dx, dy, ymin, ymax;
     [purple]int[/purple] *cut_in_line, nb_cut;
     [b][blue]if[/blue][/b](nb_vertices < 3) [b][blue]return[/blue][/b];
     cut_in_line = malloc(nb_vertices*sizeof(int));
     [b][blue]if[/blue][/b](!cut_in_line) [b][blue]return[/blue][/b];
     ymin = ymax = y[0];
     [b][blue]for[/blue][/b](i=[maroon]1[/maroon] ; i<nb_vertices ; i++)
     {
         [b][blue]if[/blue][/b](y[i ] < ymin) ymin = y[i ];
         [b][blue]if[/blue][/b](y[i ] > ymax) ymax = y[i ];
     }
     [b][blue]for[/blue][/b](i=ymin ; i<=ymax ; i++)
     {
         nb_cut = [maroon]0[/maroon];
         [b][blue]for[/blue][/b](j=[maroon]0[/maroon] ; j<nb_vertices ; j++)
         {
             [b][blue]if[/blue][/b]((y[j]<=i && y[(j+1)%nb_vertices]>=i) || (y[j]>=i && y[(j+1)%nb_vertices]<=i))
             {
                 dy = abs(y[j]-y[(j+1)%nb_vertices]);
                 [b][blue]if[/blue][/b](dy)
                 {
                     dx = x[(j+1)%nb_vertices]-x[j];
                     cut_in_line[nb_cut] = x[j] + [b][green]/*random*/[/green][/b](abs(i-y[j]+sgn(i-y[j])/2)*dx/dy);
                     nb_cut++;
                 }
             }
         }
         Filled_polygon_quicksord(cut_in_line, [maroon]0[/maroon], nb_cut-1);
         j = [maroon]0[/maroon];
         [b][blue]while[/blue][/b](j<nb_cut-2 && cut_in_line[j]==cut_in_line[j+1]) j++;
         [b][blue]while[/blue][/b](j < nb_cut)
         {
             [b][blue]if[/blue][/b](j == nb_cut-1) Horizontal_Line(cut_in_line[j-1]+1, cut_in_line[j], i, color);
             [b][blue]else[/blue][/b]
             {
                 dx = [maroon]1[/maroon];
                 [b][blue]while[/blue][/b](j+dx<nb_cut-1 && cut_in_line[j+dx]==cut_in_line[j+dx+1]) dx++;
                 Horizontal_Line(cut_in_line[j], cut_in_line[j+dx], i, color);
                 j += dx;
             }
             j++;
         }
     }
     free(cut_in_line);
}

[brown]#define abs(a) ((a) < 0 ? -(a) : (a))[/brown]
[brown]#define min(a,b) (((a) < (b))? (a) : (b))[/brown]
[brown]#define max(a,b) (((a) > (b))? (a) : (b))[/brown]
[brown]#define sgn(a) ((a) < 0 ? (-1) : (a) > 0 ? (1) : (a))[/brown]


void Horizontal_Line(int x1, [purple]int[/purple] x2, [purple]int[/purple] y, unsigned short color)
{
     unsigned short* VRAM = GetVRAMAdress();
     [purple]int[/purple] i;
     [purple]int[/purple] xi = max(min(x1,x2),[maroon]0[/maroon]);
     [purple]int[/purple] xf = min(max(x1,x2),LCD_WIDTH_PX);
     [b][blue]if[/blue][/b](y < 0 || y > LCD_HEIGHT_PX) [b][blue]return[/blue][/b];
     [b][blue]for[/blue][/b](i=xi; i <= xf; i++)
     VRAM[LCD_WIDTH_PX*y + i] = color;
}

Afficher du texte
Afficher du texte
void text_printC(int x, [purple]int[/purple] y, [purple]char[/purple] c, [purple]int[/purple] size, [purple]int[/purple] color)
{
    [purple]int[/purple] i, j, byte_width, alpha;
    char* data;
    [b][blue]if[/blue][/b](c<32 || c>127 || size<1) [b][blue]return[/blue][/b];
    byte_width = ((used_font[b]->[/b]width-1)>>3)+1;
    data = used_font[b]->[/b]data + byte_width * used_font[b]->[/b]height * (c-32);
    alpha = [maroon]32[/maroon] - ((color>>16) % 32);
    color &= [maroon]0[/maroon]xFFFF;
    [b][blue]for[/blue][/b](i=[maroon]0[/maroon] ; i<used_font[b]->[/b]height ; i++) {
        [b][blue]for[/blue][/b](j=[maroon]0[/maroon] ; j<used_font[b]->[/b]width ; j++) {
            [b][blue]if[/blue][/b](data[i*byte_width+(j>>3)] & (128>>(j&7)))
                text_drawPoint(x+j*size, y+i*size, size, color, alpha);
            [b][blue]else[/blue][/b] if(used_font[b]->[/b]flags & ANTIALIASING) { [green]// Antialiasing[/green]
                [b][blue]if[/blue][/b](text_readPix(data, j, i-1, used_font[b]->[/b]width, used_font[b]->[/b]height)) {
                    [b][blue]if[/blue][/b](text_readPix(data, j-1, i, used_font[b]->[/b]width, used_font[b]->[/b]height)) text_antialias(x+j*size, y+i*size, size, color, alpha, [maroon]0[/maroon]);
                    [b][blue]if[/blue][/b](text_readPix(data, j+1, i, used_font[b]->[/b]width, used_font[b]->[/b]height)) text_antialias(x+j*size, y+i*size, size, color, alpha, [maroon]1[/maroon]);
                }
                [b][blue]if[/blue][/b](text_readPix(data, j, i+1, used_font[b]->[/b]width, used_font[b]->[/b]height)) {
                    [b][blue]if[/blue][/b](text_readPix(data, j-1, i, used_font[b]->[/b]width, used_font[b]->[/b]height)) text_antialias(x+j*size, y+i*size, size, color, alpha, [maroon]2[/maroon]);
                    [b][blue]if[/blue][/b](text_readPix(data, j+1, i, used_font[b]->[/b]width, used_font[b]->[/b]height)) text_antialias(x+j*size, y+i*size, size, color, alpha, [maroon]3[/maroon]);
                }
            }
        }
    }
}

void text_print(int x, [purple]int[/purple] y, char* c, [purple]int[/purple] size, [purple]int[/purple] color)
{
    [purple]int[/purple] save_x = x;
    [b][blue]for[/blue][/b]( ; *c ; c++) {
        [b][blue]if[/blue][/b](*c == [gray]'\n'[/gray]) {
            x = save_x;
            y += (used_font[b]->[/b]height + used_font[b]->[/b]height/2) * size;
        } [b][blue]else[/blue][/b] {
            text_printC(x, y, *c, size, color);
            x += size * text_widthC(*c);
        }
    }
}

Affiche un sprite
Affiche un sprite
void CopySpriteNbitMasked(const unsigned char* data, int x, int y, int width, int height, const short* palette, short maskColor, unsigned int bitwidth)
{
    short* VRAM = (short*)0xA8000000; //ou  color_t* VRAM = (color_t*) GetVRAMAddress();
    int offset = 0;
    int availbits ;
    int j,i;
    unsigned char buf;
    short thiss;
    short color;

    VRAM += (128*3*y + x);
    for(j=y; j<y+height; j++)
    {
        availbits = 0;

        for(i=x; i<x+width;  i++)
        {
            if (!availbits)
            {
                buf = data[offset++];
                availbits = 8;
            }
            thiss = ((short)buf>>(8-bitwidth));
            color = palette[thiss];
            if(color != maskColor && i >= 0 && i<384)
            {
                *VRAM = color;
            }
            VRAM++;
            buf<=bitwidth;
            availbits-=bitwidth;
        }
        VRAM += (128*3-width);
    }
}

Affiche un sprite (en 16 bit)
Affiche un sprite (en 16 bit)
void CopySpriteMasked(short* bitmap, int x, int y, int width, int height, short mask)
{
    short* VRAM = (short*)0xA8000000;

    int y_index;
    int x_index;
    short * base = y * 128*3 + x + VRAM;
    for (y_index = height; y_index > 0; --y_index, base += 128*3 - width) {
        for (x_index = width; x_index > 0; --x_index, ++base, ++bitmap) {
            if (*bitmap != mask) *base = *bitmap;
        }
    }
}

Affiche un sprite 16 bit avec de la transparence
Affiche un sprite 16 bit avec de la transparence
void alphaSprite(int x, int y, int width, int height, short* bitmap, short alpha)
{
    short* VRAM = (short*)0xA8000000;
    int x_inc = width;
    if (y < 0)
    {
        bitmap -= y * width;
        height += y;
        y = 0;
    }
    if (height > 216 - y) height = 216 - y;

    if (x < 0)
    {
        bitmap -= x;
        width += x;
        x = 0;
    }
    if (width > 128*3 - x) width = 128*3 - x;

    x_inc -= width;

    int y_index;
    int x_index;
    short * base = y * 128*3 + x + VRAM;
    for (y_index = height; y_index > 0; y_index--, base += 128*3 - width, bitmap += x_inc)
    {
        for (x_index = width; x_index > 0; x_index--, base++ , bitmap++ )
        {
            if (*bitmap!=alpha && *bitmap!= 0xffff) *base = *bitmap;
        }
    }
}

Afficher des sprites avec de la transparence
Afficher des sprites avec de la transparence
void CopySpriteNbitMaskedAlpha(const unsigned char* data, [purple]int[/purple] x, [purple]int[/purple] y, [purple]int[/purple] width, [purple]int[/purple] height, const color_t* palette, color_t maskColor, [purple]unsigned int[/purple] bitwidth,int alpha)
{
    color_t* VRAM = (color_t*) GetVRAMAdress();
    VRAM += (LCD_WIDTH_PX*y + x);
    alpha %= [maroon]32[/maroon];
    [purple]int[/purple] i,j;
    [purple]int[/purple] offset = [maroon]0[/maroon];
    [purple]unsigned char[/purple] buf=[maroon]0[/maroon];
    [b][blue]for[/blue][/b](j=y; j<y+height; j++)
    {
       [purple]int[/purple] availbits = [maroon]0[/maroon];
       [b][blue]for[/blue][/b](i=x; i<x+width;  i++)
       {
          [b][blue]if[/blue][/b] (!availbits)
          {
             buf = data[offset++];
             availbits = [maroon]8[/maroon];
          }
          color_t thiss = ((color_t)buf>>(8-bitwidth));
          color_t color = palette[thiss];
          [b][blue]if[/blue][/b](color != maskColor&& i >=[maroon]0[/maroon] && i<384)
             *VRAM = ((((color & 0xF81F) * alpha + (*VRAM & 0xF81F) * (32-alpha)) >> 5) & 0xF81F) |
             ((((color & 0x07E0) * alpha + (*VRAM & 0x07E0) * (32-alpha)) >> 5) & 0x07E0);
          VRAM++;
          buf<<=bitwidth;
          availbits-=bitwidth;
       }
       VRAM += (LCD_WIDTH_PX-width);
    }
}



Transforme un entier en une chaîne de caractères
Transforme un entier en une chaîne de caractères
char* int2str(char* c, [purple]int[/purple] n)
{
    [b][blue]if[/blue][/b](n==[maroon]0[/maroon])
    {
        c[0] = [gray]'0'[/gray];
        c[1] = [maroon]0[/maroon];
    }
    [b][blue]else[/blue][/b]
    {
        [purple]int[/purple] i, l=[maroon]0[/maroon];
        [b][blue]for[/blue][/b](i=n ; i ; i/=[maroon]10[/maroon])
            l++;
        c[l] = [maroon]0[/maroon];
        [b][blue]for[/blue][/b](i=n ; i ; i/=[maroon]10[/maroon])
            c[--l] = i%10+[gray]'0'[/gray];
    }
    [b][blue]return[/blue][/b] c;
}

Abs
Abs
unsigned [purple]int[/purple] abs(int i){
      [b][blue]return[/blue][/b] (i<0?-i:i);
}

Nombre au hasard
Chiffre au hasard
unsigned [purple]int[/purple] random(int seed, [purple]int[/purple] value) [green]// Function from Simon Lothar[/green]
{
    static [purple]unsigned int[/purple] lastrandom = [maroon]0[/maroon]x12345678;
    [b][blue]if[/blue][/b](seed) lastrandom = seed;
    lastrandom = (0x41C64E6D * lastrandom) + 0x3039;
    [b][blue]return[/blue][/b] ((lastrandom >> 16) % value);
}

Réglage des fps
Réglage des fps
void setFps(int fpsWish) [green]//1 pour 128, [maroon]2[/maroon] pour 64, [maroon]3[/maroon] pour 42, [maroon]128[/maroon]/fpsWish en fait[/green]
{
     static [purple]unsigned int[/purple] fps = [maroon]0[/maroon], fps_count = [maroon]0[/maroon];

     [b][blue]do[/blue][/b]
     {
         fps = RTC_GetTicks();
     }
     [b][blue]while[/blue][/b](fps < fps_count+fpsWish);
     fps_count = RTC_GetTicks();
}




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ColorLib regroupe toutes ses fonctions


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