Backface culling, basic lighting, terminal improvements #29
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matt-meeks
commented
Apr 15, 2023
matt-meeks
commented
- Backface culling (frontface also available)
- Simple dot product based lighting
- Double terminal "pixel" density by using half block character with both foreground and background colors
- Hide terminal cursor
- Early exit of row when no longer inside triangle
matt-meeks
commented
Apr 15, 2023
| int main(void) | ||
| { | ||
| signal(SIGINT, sig_handler); | ||
| printf("\033[?25l"); |
matt-meeks
commented
Apr 15, 2023
| void sig_handler(int signo) | ||
| { | ||
| if (signo == SIGINT) { | ||
| printf("\033[?25h"); |
matt-meeks
commented
Apr 15, 2023
demos/vc.c
Outdated
| for (size_t x = 0; x < vc_term_scaled_down_width; ++x) { | ||
| // TODO: explore the idea of figuring out aspect ratio of the character using escape ANSI codes of the terminal and rendering the image accordingly | ||
| printf("\033[48;5;%dm ", vc_term_char_canvas[y*vc_term_scaled_down_width + x]); | ||
| printf("\033[48;5;%dm\033[38;5;%dm%s", vc_term_char_canvas[y*vc_term_scaled_down_width + x], vc_term_char_canvas[y*vc_term_scaled_down_width + vc_term_scaled_down_width + x], "\u2584"); |
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\u2584 is the lower half block: ▄
matt-meeks
commented
Apr 15, 2023
| @@ -109,7 +164,7 @@ Olivec_Canvas vc_render(float dt) | |||
| olivec_blend_color(&OLIVEC_PIXEL(oc, x, y), (v<<(3*8))); | |||
| } | |||
| } | |||
| } | |||
| } else if (has_entered) break; | |||
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Exit early if the triangle was previously entered since it isn't possible to re-enter.
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