| 1 | module glyph_mod |
| 2 | use, intrinsic :: iso_c_binding |
| 3 | implicit none |
| 4 | public |
| 5 | |
| 6 | ! Glyph information for a single character |
| 7 | type :: glyph_t |
| 8 | integer :: codepoint = 0 ! Unicode codepoint |
| 9 | integer :: tex_x = 0, tex_y = 0 ! Position in texture atlas |
| 10 | integer :: width = 0, height = 0 ! Bitmap dimensions |
| 11 | integer :: bearing_x = 0 ! Offset from cursor X to left edge |
| 12 | integer :: bearing_y = 0 ! Offset from baseline to top edge |
| 13 | integer :: advance = 0 ! Horizontal advance to next character |
| 14 | real(c_float) :: u0 = 0.0, v0 = 0.0 ! UV coords (top-left) |
| 15 | real(c_float) :: u1 = 0.0, v1 = 0.0 ! UV coords (bottom-right) |
| 16 | logical :: valid = .false. ! Whether glyph data is loaded |
| 17 | end type glyph_t |
| 18 | |
| 19 | contains |
| 20 | |
| 21 | ! Initialize a glyph with default values |
| 22 | subroutine glyph_init(g) |
| 23 | type(glyph_t), intent(out) :: g |
| 24 | g%codepoint = 0 |
| 25 | g%tex_x = 0 |
| 26 | g%tex_y = 0 |
| 27 | g%width = 0 |
| 28 | g%height = 0 |
| 29 | g%bearing_x = 0 |
| 30 | g%bearing_y = 0 |
| 31 | g%advance = 0 |
| 32 | g%u0 = 0.0 |
| 33 | g%v0 = 0.0 |
| 34 | g%u1 = 0.0 |
| 35 | g%v1 = 0.0 |
| 36 | g%valid = .false. |
| 37 | end subroutine glyph_init |
| 38 | |
| 39 | end module glyph_mod |
| 40 |