Commit b405534855170d670048928d59818e8c22f0375c
Get it working
Charles Lehner committed on 2/10/2015, 2:23:50 AMParent: 0b29f5c16c806103ae9326149404b382ab3b7cfd
Files changed
| pngspark.c | changed |
| pngspark.h | changed |
| pngspark.c | ||
|---|---|---|
| @@ -7,11 +7,11 @@ | ||
| 7 | 7 … | |
| 8 | 8 … | |
| 9 | 9 … | static const size_t initial_size = 8; |
| 10 | 10 … | |
| 11 | -uint8_t parse_color(const char *color) | |
| 11 … | +uint32_t parse_color(const char *color) | |
| 12 | 12 … | { |
| 13 | - return !strcmp("black", color) ? 0x00 : 0x99; | |
| 13 … | + return !strcmp("black", color) ? 0xff000000 : 0xff999989; | |
| 14 | 14 … | } |
| 15 | 15 … | |
| 16 | 16 … | int pngspark_init(struct pngspark *ps, size_t height, const char *color) |
| 17 | 17 … | { |
| @@ -37,26 +37,20 @@ | ||
| 37 | 37 … | ps->max_value = value; |
| 38 | 38 … | return 0; |
| 39 | 39 … | } |
| 40 | 40 … | |
| 41 | -int pngspark_draw(struct pngspark *ps, uint8_t *data, size_t width, | |
| 41 … | +int pngspark_draw(struct pngspark *ps, uint32_t *data, size_t width, | |
| 42 | 42 … | size_t height) |
| 43 | 43 … | { |
| 44 | 44 … | double *values = ps->values; |
| 45 | - uint8_t color = ps->color; | |
| 45 … | + uint32_t color = ps->color; | |
| 46 … | + double height_scale = (double)height / (double)ps->max_value; | |
| 46 | 47 … | for (size_t x = 0; x < width; x++) { |
| 47 | - size_t value = values[x] * height; | |
| 48 | - data[x] = value; | |
| 49 | - for (size_t y = 0; y < height; y++) | |
| 50 | - data[x * width + y] = 0x9f; | |
| 51 | - /* | |
| 52 | - printf("write value: %zu, i: %zu\n", value, 1 * width + x); | |
| 53 | - for (size_t y = value+1; y < height; y++) | |
| 54 | - data[y * width + x] = color; | |
| 55 | - */ | |
| 56 | - (void)value; | |
| 57 | - (void)color; | |
| 58 | - (void)data; | |
| 48 … | + size_t value = values[x] * height_scale; | |
| 49 … | + for (size_t y = 0; y < value; y++) | |
| 50 … | + data[x + width * y] = 0; | |
| 51 … | + for (size_t y = value; y <= height; y++) | |
| 52 … | + data[x + width * y] = color; | |
| 59 | 53 … | } |
| 60 | 54 … | return 0; |
| 61 | 55 … | } |
| 62 | 56 … | |
| @@ -67,13 +61,14 @@ | ||
| 67 | 61 … | } |
| 68 | 62 … | |
| 69 | 63 … | int pngspark_write(struct pngspark *ps, FILE *file) |
| 70 | 64 … | { |
| 71 | - LuImage *img = luImageCreate(ps->num_values, ps->max_value+1, 1, 8); | |
| 65 … | + LuImage *img = luImageCreate(ps->num_values, ps->max_value+1, 4, 8); | |
| 72 | 66 … | if (!img) return 1; |
| 73 | 67 … | printf("size: %zu\n", img->dataSize); |
| 74 | 68 … | |
| 75 | - int ret = pngspark_draw(ps, img->data, ps->num_values, ps->max_value); | |
| 69 … | + int ret = pngspark_draw(ps, (uint32_t *)img->data, ps->num_values, | |
| 70 … | + ps->max_value); | |
| 76 | 71 … | if (!ret) |
| 77 | 72 … | ret = luPngWrite(write_fd, file, img); |
| 78 | 73 … | luImageRelease(img); |
| 79 | 74 … | return ret; |
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