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indent fold.c

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This commit is contained in:
Bill Kendrick 2017-10-15 11:45:23 -07:00
parent c855261af2
commit 31cb4f4505
1 changed files with 302 additions and 275 deletions
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465
magic/src/fold.c
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@ -15,66 +15,57 @@ int fold_ox, fold_oy;
int fold_x, fold_y; int fold_x, fold_y;
Uint8 fold_shadow_value; Uint8 fold_shadow_value;
Uint8 corner; Uint8 corner;
Mix_Chunk * fold_snd; Mix_Chunk *fold_snd;
Uint8 fold_r, fold_g, fold_b; Uint8 fold_r, fold_g, fold_b;
Uint32 fold_color; Uint32 fold_color;
SDL_Surface * fold_surface_src, * fold_surface_dst; SDL_Surface *fold_surface_src, *fold_surface_dst;
void fold_draw(magic_api * api, int which, void fold_draw(magic_api * api, int which,
SDL_Surface * canvas, SDL_Surface * snapshot, SDL_Surface * canvas, SDL_Surface * snapshot, int x, int y, SDL_Rect * update_rect);
int x, int y, SDL_Rect * update_rect); static void fold_erase(void *ptr, int which, SDL_Surface * canvas, SDL_Surface * last, int x, int y);
static void fold_erase(void * ptr, int which, SDL_Surface * canvas, SDL_Surface * last, void translate_coords(SDL_Surface * canvas, int angle);
int x, int y); SDL_Surface *rotate(magic_api * api, SDL_Surface * canvas, int angle);
void translate_coords(SDL_Surface * canvas,int angle);
SDL_Surface * rotate(magic_api * api, SDL_Surface * canvas, int angle);
void fold_draw(magic_api * api, int which, void fold_draw(magic_api * api, int which,
SDL_Surface * canvas, SDL_Surface * snapshot, SDL_Surface * canvas, SDL_Surface * snapshot, int x, int y, SDL_Rect * update_rect);
int x, int y, SDL_Rect * update_rect); static void fold_print_line(void *ptr, int which, SDL_Surface * canvas, SDL_Surface * last, int x, int y);
static void fold_print_line(void * ptr, int which, SDL_Surface * canvas, SDL_Surface * last, static void fold_print_dark_line(void *ptr, int which, SDL_Surface * canvas, SDL_Surface * last, int x, int y);
int x, int y); void translate_xy(SDL_Surface * canvas, int x, int y, int *a, int *b, int rotation);
static void fold_print_dark_line(void * ptr, int which, SDL_Surface * canvas, SDL_Surface * last,
int x, int y);
void translate_xy(SDL_Surface * canvas, int x, int y, int * a, int * b, int rotation);
Uint32 fold_api_version(void); Uint32 fold_api_version(void);
void fold_set_color(magic_api * api, Uint8 r, Uint8 g, Uint8 b); void fold_set_color(magic_api * api, Uint8 r, Uint8 g, Uint8 b);
int fold_init(magic_api * api); int fold_init(magic_api * api);
int fold_get_tool_count(magic_api * api); int fold_get_tool_count(magic_api * api);
SDL_Surface * fold_get_icon(magic_api * api, int which); SDL_Surface *fold_get_icon(magic_api * api, int which);
char * fold_get_name(magic_api * api, int which); char *fold_get_name(magic_api * api, int which);
char * fold_get_description(magic_api * api, int which, int mode); char *fold_get_description(magic_api * api, int which, int mode);
int fold_requires_colors(magic_api * api, int which); int fold_requires_colors(magic_api * api, int which);
void fold_release(magic_api * api, int which, void fold_release(magic_api * api, int which,
SDL_Surface * canvas, SDL_Surface * snapshot, SDL_Surface * canvas, SDL_Surface * snapshot, int x, int y, SDL_Rect * update_rect);
int x, int y, SDL_Rect * update_rect);
void fold_shutdown(magic_api * api); void fold_shutdown(magic_api * api);
void fold_click(magic_api * ptr, int which, int mode, void fold_click(magic_api * ptr, int which, int mode,
SDL_Surface * canvas, SDL_Surface * snapshot, SDL_Surface * canvas, SDL_Surface * snapshot, int x, int y, SDL_Rect * update_rect);
int x, int y, SDL_Rect * update_rect);
void fold_preview(magic_api * api, int which, SDL_Surface * canvas, void fold_preview(magic_api * api, int which, SDL_Surface * canvas,
SDL_Surface * snapshot, int ox, int oy, int x, int y, SDL_Surface * snapshot, int ox, int oy, int x, int y, SDL_Rect * update_rect);
SDL_Rect * update_rect);
int fold_modes(magic_api * api, int which); int fold_modes(magic_api * api, int which);
// Housekeeping functions // Housekeeping functions
void fold_drag(magic_api * api, int which, SDL_Surface * canvas, void fold_drag(magic_api * api, int which, SDL_Surface * canvas,
SDL_Surface * snapshot, int ox, int oy, int x, int y, SDL_Surface * snapshot, int ox, int oy, int x, int y, SDL_Rect * update_rect);
SDL_Rect * update_rect);
void fold_switchin(magic_api * api, int which, int mode, SDL_Surface * canvas); void fold_switchin(magic_api * api, int which, int mode, SDL_Surface * canvas);
inline Uint8 fold_what_corner(int x, int y, SDL_Surface * canvas); inline Uint8 fold_what_corner(int x, int y, SDL_Surface * canvas);
void fold_switchout(magic_api * api, int which, int mode, SDL_Surface * canvas); void fold_switchout(magic_api * api, int which, int mode, SDL_Surface * canvas);
Uint32 fold_api_version(void) Uint32 fold_api_version(void)
{ {
return(TP_MAGIC_API_VERSION); return (TP_MAGIC_API_VERSION);
} }
void fold_set_color(magic_api * api ATTRIBUTE_UNUSED, Uint8 r, Uint8 g, Uint8 b) //get the colors from API and store it in structure void fold_set_color(magic_api * api ATTRIBUTE_UNUSED, Uint8 r, Uint8 g, Uint8 b) //get the colors from API and store it in structure
{ {
fold_r=r; fold_r = r;
fold_g=g; fold_g = g;
fold_b=b; fold_b = b;
} }
int fold_init(magic_api * api) int fold_init(magic_api * api)
@ -84,7 +75,7 @@ int fold_init(magic_api * api)
snprintf(fname, sizeof(fname), "%s/sounds/magic/fold.wav", api->data_directory); snprintf(fname, sizeof(fname), "%s/sounds/magic/fold.wav", api->data_directory);
fold_snd = Mix_LoadWAV(fname); fold_snd = Mix_LoadWAV(fname);
return(1); return (1);
} }
int fold_get_tool_count(magic_api * api ATTRIBUTE_UNUSED) int fold_get_tool_count(magic_api * api ATTRIBUTE_UNUSED)
@ -92,334 +83,361 @@ int fold_get_tool_count(magic_api * api ATTRIBUTE_UNUSED)
return 1; return 1;
} }
SDL_Surface * fold_get_icon(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED) SDL_Surface *fold_get_icon(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
{ {
char fname[1024]; char fname[1024];
snprintf(fname, sizeof(fname), "%s/images/magic/fold.png", snprintf(fname, sizeof(fname), "%s/images/magic/fold.png", api->data_directory);
api->data_directory);
return(IMG_Load(fname)); return (IMG_Load(fname));
} }
char * fold_get_name(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED) { return(gettext_noop("Fold")); } char *fold_get_name(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
char * fold_get_description(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED) { return strdup(gettext_noop("Choose a background color and click to turn the corner of the page over.")); }
int fold_requires_colors(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED) { return 1; } //selected color will be a "backpage" color
static void fold_shadow(void * ptr, int which ATTRIBUTE_UNUSED, SDL_Surface * canvas, SDL_Surface * temp,
int x, int y)
{ {
magic_api * api = (magic_api *) ptr; return (gettext_noop("Fold"));
Uint8 r,g,b,a; }
SDL_GetRGBA(api->getpixel(temp, x, y),
temp->format, &r, &g, &b, &a); char *fold_get_description(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED)
{
return strdup(gettext_noop("Choose a background color and click to turn the corner of the page over."));
}
int fold_requires_colors(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
{
return 1;
} //selected color will be a "backpage" color
static void fold_shadow(void *ptr, int which ATTRIBUTE_UNUSED, SDL_Surface * canvas, SDL_Surface * temp, int x, int y)
{
magic_api *api = (magic_api *) ptr;
Uint8 r, g, b, a;
SDL_GetRGBA(api->getpixel(temp, x, y), temp->format, &r, &g, &b, &a);
api->putpixel(canvas, x, y, SDL_MapRGBA(canvas->format, api->putpixel(canvas, x, y, SDL_MapRGBA(canvas->format,
max(r-160+fold_shadow_value*4,0), max(g-160+fold_shadow_value*4,0), max(b-160+fold_shadow_value*4,0), a)); max(r - 160 + fold_shadow_value * 4, 0), max(g - 160 + fold_shadow_value * 4,
0),
max(b - 160 + fold_shadow_value * 4, 0), a));
} }
void fold_draw(magic_api * api, int which, void fold_draw(magic_api * api, int which,
SDL_Surface * canvas, SDL_Surface * snapshot, SDL_Surface * canvas, SDL_Surface * snapshot, int x, int y, SDL_Rect * update_rect ATTRIBUTE_UNUSED)
int x, int y, SDL_Rect * update_rect ATTRIBUTE_UNUSED)
{ {
float right_step_x, right_step_y, left_step_x, left_step_y; float right_step_x, right_step_y, left_step_x, left_step_y;
float dist_x, dist_y; float dist_x, dist_y;
int left_y, right_x; int left_y, right_x;
float w, h; float w, h;
SDL_Surface * temp; SDL_Surface *temp;
temp=SDL_CreateRGBSurface(SDL_ANYFORMAT, canvas->w, canvas->h, canvas->format->BitsPerPixel,
canvas->format->Rmask, canvas->format->Gmask, canvas->format->Bmask, canvas->format->Amask);
SDL_BlitSurface(canvas,0,temp,0);
right_step_x=(float)(x-left_arm_x)/(float)(left_arm_x-fold_ox); temp = SDL_CreateRGBSurface(SDL_ANYFORMAT, canvas->w, canvas->h, canvas->format->BitsPerPixel,
right_step_y=(float)(y-left_arm_y)/(float)(left_arm_x-fold_ox); canvas->format->Rmask, canvas->format->Gmask, canvas->format->Bmask,
left_step_x=(float)(x-right_arm_x)/(float)(right_arm_y-fold_oy); canvas->format->Amask);
left_step_y=(float)(y-right_arm_y)/(float)(right_arm_y-fold_oy); SDL_BlitSurface(canvas, 0, temp, 0);
for (w=0;w < canvas->w;w+=0.5)
for(h=0;h < canvas->h;h+=0.5) right_step_x = (float)(x - left_arm_x) / (float)(left_arm_x - fold_ox);
right_step_y = (float)(y - left_arm_y) / (float)(left_arm_x - fold_ox);
left_step_x = (float)(x - right_arm_x) / (float)(right_arm_y - fold_oy);
left_step_y = (float)(y - right_arm_y) / (float)(right_arm_y - fold_oy);
for (w = 0; w < canvas->w; w += 0.5)
for (h = 0; h < canvas->h; h += 0.5)
{ {
dist_x=right_step_x*w+left_step_x*h; dist_x = right_step_x * w + left_step_x * h;
dist_y=right_step_y*w+left_step_y*h; dist_y = right_step_y * w + left_step_y * h;
api->putpixel(canvas, x-dist_x, y-dist_y, api->getpixel(temp,w,h)); api->putpixel(canvas, x - dist_x, y - dist_y, api->getpixel(temp, w, h));
} }
// Erasing the triangle. // Erasing the triangle.
// The 1 pixel in plus is a workaround for api-line not getting the end in some lines. // The 1 pixel in plus is a workaround for api-line not getting the end in some lines.
if (left_arm_x > canvas->w) if (left_arm_x > canvas->w)
{ {
left_y=(float)right_arm_y/left_arm_x*(left_arm_x-canvas->w); left_y = (float)right_arm_y / left_arm_x * (left_arm_x - canvas->w);
for (h = 0; h <= right_arm_y; h++) for (h = 0; h <= right_arm_y; h++)
api->line((void *)api, which, canvas, snapshot, canvas->w, left_y-h, -1, right_arm_y-h, 1, fold_erase); api->line((void *)api, which, canvas, snapshot, canvas->w, left_y - h, -1, right_arm_y - h, 1, fold_erase);
} }
else if (right_arm_y > canvas->h) else if (right_arm_y > canvas->h)
{ {
right_x=(float)left_arm_x/right_arm_y*(right_arm_y-canvas->h); right_x = (float)left_arm_x / right_arm_y * (right_arm_y - canvas->h);
for (w = 0; w <= left_arm_x; w++) for (w = 0; w <= left_arm_x; w++)
api->line((void *)api, which, canvas, snapshot, left_arm_x-w, 0, right_x-w, canvas->h +1, 1, fold_erase); api->line((void *)api, which, canvas, snapshot, left_arm_x - w, 0, right_x - w, canvas->h + 1, 1, fold_erase);
} }
else else
for (w = 0; w <= min(left_arm_x,right_arm_y); w++) // The -1 values are because api->line for (w = 0; w <= min(left_arm_x, right_arm_y); w++) // The -1 values are because api->line
api->line((void *)api, which, canvas, snapshot, left_arm_x-w, 0, -1, right_arm_y-w, 1, fold_erase); api->line((void *)api, which, canvas, snapshot, left_arm_x - w, 0, -1, right_arm_y - w, 1, fold_erase);
SDL_BlitSurface(canvas,0,temp,0); SDL_BlitSurface(canvas, 0, temp, 0);
// Shadows // Shadows
if (left_arm_x > canvas->w) if (left_arm_x > canvas->w)
{ {
for (fold_shadow_value = 0; fold_shadow_value < 40; fold_shadow_value+=1) for (fold_shadow_value = 0; fold_shadow_value < 40; fold_shadow_value += 1)
api->line((void *)api, which, canvas, temp, canvas->w, left_y-fold_shadow_value, 0, right_arm_y-fold_shadow_value, 1, fold_shadow); api->line((void *)api, which, canvas, temp, canvas->w, left_y - fold_shadow_value, 0,
right_arm_y - fold_shadow_value, 1, fold_shadow);
} }
else if (right_arm_y > canvas->h) else if (right_arm_y > canvas->h)
{ {
for (fold_shadow_value = 0; fold_shadow_value < 40; fold_shadow_value+=1) for (fold_shadow_value = 0; fold_shadow_value < 40; fold_shadow_value += 1)
api->line((void *)api, which, canvas, temp, left_arm_x-fold_shadow_value, 0, right_x - fold_shadow_value, canvas->h, 1, fold_shadow); api->line((void *)api, which, canvas, temp, left_arm_x - fold_shadow_value, 0, right_x - fold_shadow_value,
canvas->h, 1, fold_shadow);
} }
else else
for (fold_shadow_value = 0; fold_shadow_value < 40; fold_shadow_value+=1) for (fold_shadow_value = 0; fold_shadow_value < 40; fold_shadow_value += 1)
api->line((void *)api, which, canvas, temp, left_arm_x-fold_shadow_value, 0, 0, right_arm_y-fold_shadow_value, 1, fold_shadow); api->line((void *)api, which, canvas, temp, left_arm_x - fold_shadow_value, 0, 0, right_arm_y - fold_shadow_value,
1, fold_shadow);
SDL_BlitSurface(canvas,0,temp,0); SDL_BlitSurface(canvas, 0, temp, 0);
for (fold_shadow_value = 0; fold_shadow_value < 40; fold_shadow_value+=1) for (fold_shadow_value = 0; fold_shadow_value < 40; fold_shadow_value += 1)
{ {
if (fold_shadow_value*left_step_x > x || fold_shadow_value*right_step_y > y) break; if (fold_shadow_value * left_step_x > x || fold_shadow_value * right_step_y > y)
break;
dist_x=fold_shadow_value*(right_step_x+left_step_x); dist_x = fold_shadow_value * (right_step_x + left_step_x);
dist_y=fold_shadow_value*(right_step_y+left_step_y); dist_y = fold_shadow_value * (right_step_y + left_step_y);
api->line((void *)api, which, canvas, temp, left_arm_x+fold_shadow_value*right_step_x, fold_shadow_value*right_step_y, fold_shadow_value*left_step_x, right_arm_y+fold_shadow_value*left_step_y, 1, fold_shadow); api->line((void *)api, which, canvas, temp, left_arm_x + fold_shadow_value * right_step_x,
fold_shadow_value * right_step_y, fold_shadow_value * left_step_x,
right_arm_y + fold_shadow_value * left_step_y, 1, fold_shadow);
} }
api->line((void *)api, which, canvas, snapshot, x, y, right_arm_x, right_arm_y, 1, fold_print_line); api->line((void *)api, which, canvas, snapshot, x, y, right_arm_x, right_arm_y, 1, fold_print_line);
api->line((void *)api, which, canvas, snapshot, x, y, left_arm_x, left_arm_y, 1, fold_print_line); api->line((void *)api, which, canvas, snapshot, x, y, left_arm_x, left_arm_y, 1, fold_print_line);
api->line((void *)api, which, canvas, snapshot, left_arm_x, left_arm_y, right_arm_x, right_arm_y, 1, fold_print_dark_line); api->line((void *)api, which, canvas, snapshot, left_arm_x, left_arm_y, right_arm_x, right_arm_y, 1,
fold_print_dark_line);
} }
SDL_Surface * rotate(magic_api * api, SDL_Surface * canvas, int angle) SDL_Surface *rotate(magic_api * api, SDL_Surface * canvas, int angle)
{ {
SDL_Surface * temp; SDL_Surface *temp;
int x,y; int x, y;
int a,b; int a, b;
if (angle==180) if (angle == 180)
temp=SDL_CreateRGBSurface(SDL_ANYFORMAT, canvas->w, canvas->h, canvas->format->BitsPerPixel, temp = SDL_CreateRGBSurface(SDL_ANYFORMAT, canvas->w, canvas->h, canvas->format->BitsPerPixel,
canvas->format->Rmask, canvas->format->Gmask, canvas->format->Bmask, canvas->format->Amask); canvas->format->Rmask, canvas->format->Gmask, canvas->format->Bmask,
canvas->format->Amask);
else else
temp=SDL_CreateRGBSurface(SDL_ANYFORMAT, canvas->h, canvas->w, canvas->format->BitsPerPixel, temp = SDL_CreateRGBSurface(SDL_ANYFORMAT, canvas->h, canvas->w, canvas->format->BitsPerPixel,
canvas->format->Rmask, canvas->format->Gmask, canvas->format->Bmask, canvas->format->Amask); canvas->format->Rmask, canvas->format->Gmask, canvas->format->Bmask,
canvas->format->Amask);
switch (angle) switch (angle)
{ {
case 90: case 90:
for (x=0; x<canvas->w; x++) for (x = 0; x < canvas->w; x++)
for (y=0; y<canvas->h; y++) for (y = 0; y < canvas->h; y++)
{ {
translate_xy(canvas,x,y,&a,&b,90); translate_xy(canvas, x, y, &a, &b, 90);
api->putpixel(temp,a,b,api->getpixel(canvas, x, y)); api->putpixel(temp, a, b, api->getpixel(canvas, x, y));
} }
break; break;
case 180: case 180:
// printf("%i, %i\n",temp,canvas); // printf("%i, %i\n",temp,canvas);
for (x=0; x<canvas->w; x++) for (x = 0; x < canvas->w; x++)
for (y=0; y<canvas->h; y++) for (y = 0; y < canvas->h; y++)
{ {
translate_xy(canvas,x,y,&a,&b,180); translate_xy(canvas, x, y, &a, &b, 180);
api->putpixel(temp,a,b,api->getpixel(canvas, x, y)); api->putpixel(temp, a, b, api->getpixel(canvas, x, y));
} }
break; break;
case 270: case 270:
for (x=0; x<canvas->w; x++) for (x = 0; x < canvas->w; x++)
for (y=0; y<canvas->h; y++) for (y = 0; y < canvas->h; y++)
{ {
translate_xy(canvas,x,y,&a,&b,270); translate_xy(canvas, x, y, &a, &b, 270);
api->putpixel(temp,a,b,api->getpixel(canvas, x, y)); api->putpixel(temp, a, b, api->getpixel(canvas, x, y));
} }
break; break;
} }
return temp; return temp;
} }
void translate_coords(SDL_Surface * canvas,int angle) void translate_coords(SDL_Surface * canvas, int angle)
{ {
int a,b; int a, b;
switch (angle) switch (angle)
{ {
case 90: case 90:
translate_xy(canvas,right_arm_x,right_arm_y,&a,&b,90); translate_xy(canvas, right_arm_x, right_arm_y, &a, &b, 90);
right_arm_x=a; right_arm_x = a;
right_arm_y=b; right_arm_y = b;
translate_xy(canvas,left_arm_x,left_arm_y,&a,&b,90); translate_xy(canvas, left_arm_x, left_arm_y, &a, &b, 90);
left_arm_x=a; left_arm_x = a;
left_arm_y=b; left_arm_y = b;
break; break;
case 180: case 180:
right_arm_x=canvas->w-1-right_arm_x; right_arm_x = canvas->w - 1 - right_arm_x;
right_arm_y=canvas->h-1-right_arm_y; right_arm_y = canvas->h - 1 - right_arm_y;
left_arm_x=canvas->w-1-left_arm_x; left_arm_x = canvas->w - 1 - left_arm_x;
left_arm_y=canvas->h-1-left_arm_y; left_arm_y = canvas->h - 1 - left_arm_y;
break; break;
case 270: case 270:
translate_xy(canvas,right_arm_x,right_arm_y,&a,&b,270); translate_xy(canvas, right_arm_x, right_arm_y, &a, &b, 270);
right_arm_x=a; right_arm_x = a;
right_arm_y=b; right_arm_y = b;
translate_xy(canvas,left_arm_x, left_arm_y, &a, &b, 270); translate_xy(canvas, left_arm_x, left_arm_y, &a, &b, 270);
left_arm_x=a; left_arm_x = a;
left_arm_y=b; left_arm_y = b;
break; break;
} }
} }
void translate_xy(SDL_Surface * canvas, int x, int y, int * a, int * b, int rotation) void translate_xy(SDL_Surface * canvas, int x, int y, int *a, int *b, int rotation)
{ {
switch (rotation) switch (rotation)
{ {
case 90: case 90:
*a=y; *a = y;
*b=canvas->w -1 -x; *b = canvas->w - 1 - x;
break; break;
case 180: case 180:
*a=canvas->w -1 -x; *a = canvas->w - 1 - x;
*b=canvas->h -1 -y; *b = canvas->h - 1 - y;
break; break;
case 270: case 270:
*a=canvas->h -1 -y; *a = canvas->h - 1 - y;
*b=x; *b = x;
break; break;
} }
} }
void fold_release(magic_api * api, int which, void fold_release(magic_api * api, int which,
SDL_Surface * canvas, SDL_Surface * snapshot, SDL_Surface * canvas, SDL_Surface * snapshot, int x, int y, SDL_Rect * update_rect)
int x, int y, SDL_Rect * update_rect)
{ {
int a,b; int a, b;
SDL_Surface * temp, *temp2; SDL_Surface *temp, *temp2;
x=fold_x; x = fold_x;
y=fold_y; y = fold_y;
fold_ox=fold_oy=0; fold_ox = fold_oy = 0;
SDL_BlitSurface(snapshot, 0, canvas, 0); SDL_BlitSurface(snapshot, 0, canvas, 0);
switch (corner) switch (corner)
{ {
case 1: case 1:
translate_xy(canvas,x,y,&a,&b,90); translate_xy(canvas, x, y, &a, &b, 90);
translate_coords(canvas,90); translate_coords(canvas, 90);
temp=rotate(api, canvas, 90); temp = rotate(api, canvas, 90);
fold_draw (api, which, temp, snapshot, a, b,update_rect); fold_draw(api, which, temp, snapshot, a, b, update_rect);
temp2=rotate(api,temp,270); temp2 = rotate(api, temp, 270);
SDL_BlitSurface(temp2,0,canvas,0); SDL_BlitSurface(temp2, 0, canvas, 0);
SDL_FreeSurface(temp); SDL_FreeSurface(temp);
SDL_FreeSurface(temp2); SDL_FreeSurface(temp2);
break; break;
case 2: case 2:
fold_draw (api, which, canvas, snapshot, x,y,update_rect); fold_draw(api, which, canvas, snapshot, x, y, update_rect);
break; break;
case 3: case 3:
translate_xy(canvas,x,y,&a,&b,270); translate_xy(canvas, x, y, &a, &b, 270);
translate_coords(canvas,270); translate_coords(canvas, 270);
temp=rotate(api, canvas, 270); temp = rotate(api, canvas, 270);
fold_draw (api, which, temp, snapshot, a, b,update_rect); fold_draw(api, which, temp, snapshot, a, b, update_rect);
temp2=rotate(api,temp,90); temp2 = rotate(api, temp, 90);
SDL_BlitSurface(temp2,0,canvas,0); SDL_BlitSurface(temp2, 0, canvas, 0);
SDL_FreeSurface(temp); SDL_FreeSurface(temp);
SDL_FreeSurface(temp2); SDL_FreeSurface(temp2);
break; break;
case 4: case 4:
translate_xy(canvas,x,y,&a,&b,180); translate_xy(canvas, x, y, &a, &b, 180);
translate_coords(canvas,180); translate_coords(canvas, 180);
temp=rotate(api, canvas, 180); temp = rotate(api, canvas, 180);
fold_draw (api, which, temp, snapshot, a, b,update_rect); fold_draw(api, which, temp, snapshot, a, b, update_rect);
temp2=rotate(api,temp,180); temp2 = rotate(api, temp, 180);
SDL_BlitSurface(temp2,0,canvas,0); SDL_BlitSurface(temp2, 0, canvas, 0);
SDL_FreeSurface (temp); SDL_FreeSurface(temp);
SDL_FreeSurface (temp2); SDL_FreeSurface(temp2);
break; break;
} }
update_rect->x=update_rect->y=0; update_rect->x = update_rect->y = 0;
update_rect->w=canvas->w; update_rect->w = canvas->w;
update_rect->h=canvas->h; update_rect->h = canvas->h;
api->playsound(fold_snd, (x * 255) / canvas->w, 255); api->playsound(fold_snd, (x * 255) / canvas->w, 255);
} }
void fold_shutdown(magic_api * api ATTRIBUTE_UNUSED) void fold_shutdown(magic_api * api ATTRIBUTE_UNUSED)
{ {
Mix_FreeChunk(fold_snd); Mix_FreeChunk(fold_snd);
SDL_FreeSurface(fold_surface_dst); SDL_FreeSurface(fold_surface_dst);
SDL_FreeSurface(fold_surface_src); SDL_FreeSurface(fold_surface_src);
} }
// Interactivity functions // Interactivity functions
inline Uint8 fold_what_corner(int x, int y, SDL_Surface * canvas) inline Uint8 fold_what_corner(int x, int y, SDL_Surface * canvas)
{ {
if (x>=canvas->w/2) if (x >= canvas->w / 2)
{ {
if (y>=canvas->h/2) return 4; if (y >= canvas->h / 2)
else return 1; return 4;
else
return 1;
} }
else else
{ {
if (y>=canvas->h/2) return 3; if (y >= canvas->h / 2)
else return 2; return 3;
else
return 2;
} }
} }
static void fold_print_line(void * ptr, int which ATTRIBUTE_UNUSED, SDL_Surface * canvas, SDL_Surface * last, static void fold_print_line(void *ptr, int which ATTRIBUTE_UNUSED, SDL_Surface * canvas, SDL_Surface * last,
int x, int y) int x, int y)
{ {
magic_api * api = (magic_api *) ptr; magic_api *api = (magic_api *) ptr;
api->putpixel(canvas, x, y, SDL_MapRGB(last->format, 222, 222, 222)); //Middle gray. Color have been set arbitrary. api->putpixel(canvas, x, y, SDL_MapRGB(last->format, 222, 222, 222)); //Middle gray. Color have been set arbitrary.
} }
static void fold_print_dark_line(void * ptr, int which ATTRIBUTE_UNUSED, SDL_Surface * canvas, SDL_Surface * last ATTRIBUTE_UNUSED,
int x, int y) static void fold_print_dark_line(void *ptr, int which ATTRIBUTE_UNUSED, SDL_Surface * canvas,
SDL_Surface * last ATTRIBUTE_UNUSED, int x, int y)
{ {
magic_api * api = (magic_api *) ptr; magic_api *api = (magic_api *) ptr;
api->putpixel(canvas, x, y, SDL_MapRGB(last->format, 90, 90, 90)); //It should not look too black nor too white with shadowed colors. api->putpixel(canvas, x, y, SDL_MapRGB(last->format, 90, 90, 90)); //It should not look too black nor too white with shadowed colors.
} }
static void fold_erase(void * ptr, int which ATTRIBUTE_UNUSED, SDL_Surface * canvas, SDL_Surface * last ATTRIBUTE_UNUSED, static void fold_erase(void *ptr, int which ATTRIBUTE_UNUSED, SDL_Surface * canvas, SDL_Surface * last ATTRIBUTE_UNUSED,
int x, int y) int x, int y)
{ {
magic_api * api = (magic_api *) ptr; magic_api *api = (magic_api *) ptr;
api->putpixel(canvas, x, y, SDL_MapRGB(canvas->format, fold_r, fold_g, fold_b)); api->putpixel(canvas, x, y, SDL_MapRGB(canvas->format, fold_r, fold_g, fold_b));
} }
void fold_click(magic_api * ptr, int which, int mode ATTRIBUTE_UNUSED, void fold_click(magic_api * ptr, int which, int mode ATTRIBUTE_UNUSED,
SDL_Surface * canvas, SDL_Surface * snapshot, SDL_Surface * canvas, SDL_Surface * snapshot, int x, int y, SDL_Rect * update_rect)
int x, int y, SDL_Rect * update_rect)
{ {
magic_api * api = (magic_api *) ptr; magic_api *api = (magic_api *) ptr;
corner=fold_what_corner(x, y, snapshot);
corner = fold_what_corner(x, y, snapshot);
switch (corner) switch (corner)
{ {
case 1: case 1:
fold_ox=canvas->w-1; fold_ox = canvas->w - 1;
fold_oy=0; fold_oy = 0;
break; break;
case 2: case 2:
fold_ox=fold_oy=0; fold_ox = fold_oy = 0;
break; break;
case 3: case 3:
fold_ox=0; fold_ox = 0;
fold_oy=canvas->h-1; fold_oy = canvas->h - 1;
break; break;
case 4: case 4:
fold_ox=canvas->w-1; fold_ox = canvas->w - 1;
fold_oy=canvas->h-1; fold_oy = canvas->h - 1;
break; break;
} }
@ -433,45 +451,53 @@ void fold_preview(magic_api * api, int which, SDL_Surface * canvas,
int middle_point_x; int middle_point_x;
int middle_point_y; int middle_point_y;
fold_x=x; fold_x = x;
fold_y=y; fold_y = y;
SDL_BlitSurface(snapshot,0,canvas,0); SDL_BlitSurface(snapshot, 0, canvas, 0);
middle_point_x=(fold_ox+x)/2; middle_point_x = (fold_ox + x) / 2;
middle_point_y=(fold_oy+y)/2; middle_point_y = (fold_oy + y) / 2;
switch(corner) switch (corner)
{ {
case 1: //Right Upper case 1: //Right Upper
right_arm_x=fold_ox- (fold_ox-middle_point_x)-middle_point_y*middle_point_y/(fold_ox-middle_point_x); right_arm_x = fold_ox - (fold_ox - middle_point_x) - middle_point_y * middle_point_y / (fold_ox - middle_point_x);
right_arm_y=fold_oy; right_arm_y = fold_oy;
left_arm_x=fold_ox; left_arm_x = fold_ox;
left_arm_y=fold_oy-(fold_oy-middle_point_y)-(fold_ox-middle_point_x)*(fold_ox-middle_point_x)/(fold_oy-middle_point_y); left_arm_y =
fold_oy - (fold_oy - middle_point_y) - (fold_ox - middle_point_x) * (fold_ox - middle_point_x) / (fold_oy -
middle_point_y);
break; break;
case 2: //LU case 2: //LU
right_arm_x=fold_ox; right_arm_x = fold_ox;
right_arm_y=middle_point_y+middle_point_x*middle_point_x/middle_point_y; right_arm_y = middle_point_y + middle_point_x * middle_point_x / middle_point_y;
left_arm_x=middle_point_x+middle_point_y*middle_point_y/middle_point_x; left_arm_x = middle_point_x + middle_point_y * middle_point_y / middle_point_x;
left_arm_y=fold_oy; left_arm_y = fold_oy;
break; break;
case 3: //LL case 3: //LL
right_arm_x=middle_point_x+(fold_oy-middle_point_y)*(fold_oy-middle_point_y)/middle_point_x; right_arm_x = middle_point_x + (fold_oy - middle_point_y) * (fold_oy - middle_point_y) / middle_point_x;
right_arm_y=fold_oy; right_arm_y = fold_oy;
left_arm_x=fold_ox; left_arm_x = fold_ox;
left_arm_y=fold_oy-(fold_oy-middle_point_y)-(fold_ox-middle_point_x)*(fold_ox-middle_point_x)/(fold_oy-middle_point_y); left_arm_y =
fold_oy - (fold_oy - middle_point_y) - (fold_ox - middle_point_x) * (fold_ox - middle_point_x) / (fold_oy -
middle_point_y);
break; break;
case 4: //RL case 4: //RL
right_arm_x=fold_ox; right_arm_x = fold_ox;
right_arm_y=fold_oy-(fold_oy-middle_point_y)-(fold_ox-middle_point_x)*(fold_ox-middle_point_x)/(fold_oy-middle_point_y); right_arm_y =
fold_oy - (fold_oy - middle_point_y) - (fold_ox - middle_point_x) * (fold_ox - middle_point_x) / (fold_oy -
middle_point_y);
left_arm_x=fold_ox-(fold_ox-middle_point_x)-(fold_oy-middle_point_y)*(fold_oy-middle_point_y)/(fold_ox-middle_point_x); left_arm_x =
left_arm_y=fold_oy; fold_ox - (fold_ox - middle_point_x) - (fold_oy - middle_point_y) * (fold_oy - middle_point_y) / (fold_ox -
middle_point_x);
left_arm_y = fold_oy;
break; break;
} }
@ -479,30 +505,31 @@ void fold_preview(magic_api * api, int which, SDL_Surface * canvas,
api->line((void *)api, which, canvas, snapshot, x, y, left_arm_x, left_arm_y, 1, fold_print_line); api->line((void *)api, which, canvas, snapshot, x, y, left_arm_x, left_arm_y, 1, fold_print_line);
api->line((void *)api, which, canvas, snapshot, left_arm_x, left_arm_y, right_arm_x, right_arm_y, 1, fold_print_line); api->line((void *)api, which, canvas, snapshot, left_arm_x, left_arm_y, right_arm_x, right_arm_y, 1, fold_print_line);
update_rect->x=update_rect->y=0; update_rect->x = update_rect->y = 0;
update_rect->w=canvas->w; update_rect->w = canvas->w;
update_rect->h=canvas->h; update_rect->h = canvas->h;
} }
void fold_drag(magic_api * api, int which, SDL_Surface * canvas, void fold_drag(magic_api * api, int which, SDL_Surface * canvas,
SDL_Surface * snapshot, int ox, int oy, int x, int y, SDL_Surface * snapshot, int ox, int oy, int x, int y, SDL_Rect * update_rect)
SDL_Rect * update_rect)
{ {
// Avoid division by zero when calculating the preview // Avoid division by zero when calculating the preview
x=clamp(2,x,canvas->w-2); x = clamp(2, x, canvas->w - 2);
y=clamp(2,y,canvas->h-2); y = clamp(2, y, canvas->h - 2);
fold_preview(api, which, canvas, snapshot, ox, oy, x, y, update_rect); fold_preview(api, which, canvas, snapshot, ox, oy, x, y, update_rect);
} }
void fold_switchin(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED, SDL_Surface * canvas ATTRIBUTE_UNUSED) void fold_switchin(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED,
SDL_Surface * canvas ATTRIBUTE_UNUSED)
{ {
} }
void fold_switchout(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED, SDL_Surface * canvas ATTRIBUTE_UNUSED) void fold_switchout(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED,
SDL_Surface * canvas ATTRIBUTE_UNUSED)
{ {
} }
int fold_modes(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED) int fold_modes(magic_api * api ATTRIBUTE_UNUSED, int which ATTRIBUTE_UNUSED)
{ {
return(MODE_PAINT_WITH_PREVIEW); return (MODE_PAINT_WITH_PREVIEW);
} }