diff options
Diffstat (limited to 'hitomezashi.c')
| -rw-r--r-- | hitomezashi.c | 141 |
1 files changed, 71 insertions, 70 deletions
diff --git a/hitomezashi.c b/hitomezashi.c index c1c581e..09feb11 100644 --- a/hitomezashi.c +++ b/hitomezashi.c @@ -2,84 +2,85 @@ #include "SDL.h" #include <assert.h> -SDL_Color HITOMEZASHI_FG_COLOUR = { .r = 0, .g = 0, .b = 0 }; -SDL_Color HITOMEZASHI_BG_COLOUR = { .r = 255, .g = 255, .b = 255 }; +SDL_Color HITOMEZASHI_FG_COLOUR = {.r = 0, .g = 0, .b = 0}; +SDL_Color HITOMEZASHI_BG_COLOUR = {.r = 255, .g = 255, .b = 255}; enum Hitomezashi_State_Init_Result -hitomezashi_state_init( - struct Hitomezashi_State *state, - int x_pattern_len, int y_pattern_len, - char *x_pattern, char *y_pattern, - int gap, int line_thickness) { - assert(x_pattern_len >= 0); - assert(y_pattern_len >= 0); - assert(gap >= 0); - assert(line_thickness > 0); +hitomezashi_state_init(struct Hitomezashi_State *state, int x_pattern_len, + int y_pattern_len, char *x_pattern, char *y_pattern, + int gap, int line_thickness) { + assert(x_pattern_len >= 0); + assert(y_pattern_len >= 0); + assert(gap >= 0); + assert(line_thickness > 0); - state->y_pattern_len = y_pattern_len; - state->x_pattern_len = x_pattern_len; - state->x_pattern = x_pattern; - state->y_pattern = y_pattern; - state->gap = gap; - state->line_thickness = line_thickness; - state->output_width = x_pattern_len * gap; - state->output_height = y_pattern_len * gap; + state->y_pattern_len = y_pattern_len; + state->x_pattern_len = x_pattern_len; + state->x_pattern = x_pattern; + state->y_pattern = y_pattern; + state->gap = gap; + state->line_thickness = line_thickness; + state->output_width = x_pattern_len * gap; + state->output_height = y_pattern_len * gap; - state->surface = SDL_CreateRGBSurface(0, state->output_width, state->output_height, 32, 0, 0, 0, 0); - if (!state->surface) { - return Hitomezashi_State_Init_Result_Err_Create_Surface; - } - return Hitomezashi_State_Init_Result_Success; + state->surface = SDL_CreateRGBSurface(0, state->output_width, + state->output_height, 32, 0, 0, 0, 0); + if (!state->surface) { + return Hitomezashi_State_Init_Result_Err_Create_Surface; + } + return Hitomezashi_State_Init_Result_Success; } -enum Hitomezashi_Draw_Result -hitomezashi_draw(struct Hitomezashi_State *state) { - if (SDL_LockSurface(state->surface) != 0) { - return Hitomezashi_Draw_Result_Err_Lock_Surface; - } +enum Hitomezashi_Draw_Result hitomezashi_draw(struct Hitomezashi_State *state) { + if (SDL_LockSurface(state->surface) != 0) { + return Hitomezashi_Draw_Result_Err_Lock_Surface; + } - Uint32 bg_colour = SDL_MapRGB(state->surface->format, HITOMEZASHI_BG_COLOUR.r, HITOMEZASHI_BG_COLOUR.g, HITOMEZASHI_BG_COLOUR.b); - Uint32 fg_colour = SDL_MapRGB(state->surface->format, HITOMEZASHI_FG_COLOUR.r, HITOMEZASHI_FG_COLOUR.g, HITOMEZASHI_FG_COLOUR.b); + Uint32 bg_colour = + SDL_MapRGB(state->surface->format, HITOMEZASHI_BG_COLOUR.r, + HITOMEZASHI_BG_COLOUR.g, HITOMEZASHI_BG_COLOUR.b); + Uint32 fg_colour = + SDL_MapRGB(state->surface->format, HITOMEZASHI_FG_COLOUR.r, + HITOMEZASHI_FG_COLOUR.g, HITOMEZASHI_FG_COLOUR.b); - SDL_FillRect(state->surface, NULL, bg_colour); + SDL_FillRect(state->surface, NULL, bg_colour); - SDL_Rect rect; - // Draw y pattern (horizontal) lines - for (int i = 0; i < state->y_pattern_len; ++i) { - for (int j = 0; j < state->x_pattern_len; ++j) { - if (j % 2 == state->y_pattern[i]) { - rect.x = j * state->gap; - rect.y = i * state->gap; - rect.w = state->gap; - rect.h = state->line_thickness; - SDL_FillRect(state->surface, &rect, fg_colour); - } - } - } - // Draw x pattern (vertical) lines - for (int i = 0; i < state->x_pattern_len; ++i) { - for (int j = 0; j < state->y_pattern_len; ++j) { - if (j % 2 == state->x_pattern[i]) { - rect.x = i * state->gap; - rect.y = j * state->gap; - rect.w = state->line_thickness; - rect.h = state->gap; - SDL_FillRect(state->surface, &rect, fg_colour); - } - } - } - // Join up the lines to avoid leaving holes at the intersections - for (int x = state->gap; x < state->output_width; x += state->gap) { - for (int y = state->gap; y < state->output_height; y += state->gap) { - rect.x = x; - rect.y = y; - rect.w = state->line_thickness; - rect.h = state->line_thickness; - SDL_FillRect(state->surface, &rect, fg_colour); + SDL_Rect rect; + // Draw y pattern (horizontal) lines + for (int i = 0; i < state->y_pattern_len; ++i) { + for (int j = 0; j < state->x_pattern_len; ++j) { + if (j % 2 == state->y_pattern[i]) { + rect.x = j * state->gap; + rect.y = i * state->gap; + rect.w = state->gap; + rect.h = state->line_thickness; + SDL_FillRect(state->surface, &rect, fg_colour); + } + } + } + // Draw x pattern (vertical) lines + for (int i = 0; i < state->x_pattern_len; ++i) { + for (int j = 0; j < state->y_pattern_len; ++j) { + if (j % 2 == state->x_pattern[i]) { + rect.x = i * state->gap; + rect.y = j * state->gap; + rect.w = state->line_thickness; + rect.h = state->gap; + SDL_FillRect(state->surface, &rect, fg_colour); + } + } + } + // Join up the lines to avoid leaving holes at the intersections + for (int x = state->gap; x < state->output_width; x += state->gap) { + for (int y = state->gap; y < state->output_height; y += state->gap) { + rect.x = x; + rect.y = y; + rect.w = state->line_thickness; + rect.h = state->line_thickness; + SDL_FillRect(state->surface, &rect, fg_colour); + } + } - } - } - - SDL_UnlockSurface(state->surface); - return Hitomezashi_Draw_Result_Success; + SDL_UnlockSurface(state->surface); + return Hitomezashi_Draw_Result_Success; } |