124 lines
4.1 KiB
C
124 lines
4.1 KiB
C
#include "camera/camera.h"
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#include "mem_arena.h"
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#include "mem_utils.h"
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#include "misc/misc_utils.h"
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#include "rasteriser/rasteriser.h"
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#include "vector/vec.h"
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#include "window/window.h"
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#include <SDL2/SDL_events.h>
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#include <SDL2/SDL_keycode.h>
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#include <stdlib.h>
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int main(void) {
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colour_t bg =
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(colour_t){.rgba.r = 27, .rgba.g = 38, .rgba.b = 79, .rgba.a = 255};
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camera_t camera = {
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.position = {.x = 0.0f, .y = 0.0f, .z = 0.0f},
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.rotation = {.x = 0.0f, .y = 0.0f, .z = 0.0f},
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};
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vec3f_t viewport = {.x = 1.0f, .y = 1.0f, .z = 1.0f};
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window_t window = {0};
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if (!init_window(&window, 800, 800, "CG From Scratch Rasteriser")) {
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return EXIT_FAILURE;
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}
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bool running = true;
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SDL_Event event = {0};
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// i32 w_min = ((i32)window.half_width) * -1;
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// i32 w_max = (i32)window.half_width;
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// i32 h_min = ((i32)window.half_height) * -1;
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// i32 h_max = (i32)window.half_height;
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// The four "front" vertices
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vec3f_t vAf = {-2, -0.5, 5};
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vec3f_t vBf = {-2, 0.5, 5};
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vec3f_t vCf = {-1, 0.5, 5};
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vec3f_t vDf = {-1, -0.5, 5};
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// The four "back" vertices
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vec3f_t vAb = {-2, -0.5, 6};
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vec3f_t vBb = {-2, 0.5, 6};
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vec3f_t vCb = {-1, 0.5, 6};
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vec3f_t vDb = {-1, -0.5, 6};
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// The front face
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line_t lABf = {project_point(vAf, &window, &camera, viewport),
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project_point(vBf, &window, &camera, viewport)};
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line_t lBCf = {project_point(vBf, &window, &camera, viewport),
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project_point(vCf, &window, &camera, viewport)};
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line_t lCDf = {project_point(vCf, &window, &camera, viewport),
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project_point(vDf, &window, &camera, viewport)};
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line_t lDAf = {project_point(vDf, &window, &camera, viewport),
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project_point(vAf, &window, &camera, viewport)};
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// The back face
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line_t lABb = {project_point(vAb, &window, &camera, viewport),
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project_point(vBb, &window, &camera, viewport)};
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line_t lBCb = {project_point(vBb, &window, &camera, viewport),
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project_point(vCb, &window, &camera, viewport)};
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line_t lCDb = {project_point(vCb, &window, &camera, viewport),
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project_point(vDb, &window, &camera, viewport)};
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line_t lDAb = {project_point(vDb, &window, &camera, viewport),
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project_point(vAb, &window, &camera, viewport)};
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// The front-to-back edges
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line_t lABfb = {project_point(vAf, &window, &camera, viewport),
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project_point(vAb, &window, &camera, viewport)};
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line_t lBCfb = {project_point(vBf, &window, &camera, viewport),
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project_point(vBb, &window, &camera, viewport)};
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line_t lCDfb = {project_point(vCf, &window, &camera, viewport),
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project_point(vCb, &window, &camera, viewport)};
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line_t lDAfb = {project_point(vDf, &window, &camera, viewport),
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project_point(vDb, &window, &camera, viewport)};
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Arena *frame_arena = NULL;
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u64 capacity = 10ull * 1024ull * 1024ull * 1024ull;
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if (!wapp_mem_arena_init(&frame_arena, capacity, WAPP_MEM_ALLOC_RESERVE,
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false)) {
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return EXIT_FAILURE;
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}
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colour_t front = {.colour = 0x00ffaaff};
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colour_t back = {.colour = 0xee0099ff};
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colour_t fb = {.colour = 0xffaa00ff};
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while (running) {
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while (SDL_PollEvent(&event)) {
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switch (event.type) {
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case SDL_QUIT:
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running = false;
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break;
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}
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}
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clear_window(&window, bg);
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draw_line(&window, frame_arena, lABf, front);
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draw_line(&window, frame_arena, lBCf, front);
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draw_line(&window, frame_arena, lCDf, front);
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draw_line(&window, frame_arena, lDAf, front);
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draw_line(&window, frame_arena, lABb, back);
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draw_line(&window, frame_arena, lBCb, back);
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draw_line(&window, frame_arena, lCDb, back);
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draw_line(&window, frame_arena, lDAb, back);
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draw_line(&window, frame_arena, lABfb, fb);
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draw_line(&window, frame_arena, lBCfb, fb);
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draw_line(&window, frame_arena, lCDfb, fb);
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draw_line(&window, frame_arena, lDAfb, fb);
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swap_buffers(&window);
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wapp_mem_arena_clear(frame_arena);
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}
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wapp_mem_arena_destroy(&frame_arena);
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close_window(&window);
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return EXIT_SUCCESS;
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}
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