orca/sketches/atlas/main.c

/************************************************************/ /**
*
*	@file: main.cpp
*	@author: Martin Fouilleul
*	@date: 30/07/2022
*	@revision:
*
*****************************************************************/
#include <errno.h>
#include <stdlib.h>
#include <string.h>

#define _USE_MATH_DEFINES //NOTE: necessary for MSVC
#include <math.h>

#include "milepost.h"

int main()
{
    mp_init();
    mp_clock_init(); //TODO put that in mp_init()?

    mp_rect windowRect = { .x = 100, .y = 100, .w = 810, .h = 610 };
    mp_window window = mp_window_create(windowRect, "test", 0);

    mp_rect contentRect = mp_window_get_content_rect(window);

    //NOTE: create surface
    mg_surface surface = mg_surface_create_for_window(window, MG_CANVAS);
    if(mg_surface_is_nil(surface))
    {
        log_error("couldn't create surface\n");
        return (-1);
    }
    mg_surface_swap_interval(surface, 0);

    //NOTE: create canvas
    mg_canvas canvas = mg_canvas_create();
    if(mg_canvas_is_nil(canvas))
    {
        log_error("Error: couldn't create canvas\n");
        return (-1);
    }

    //NOTE: create atlas
    mem_arena permanentArena = { 0 };
    mem_arena_init(&permanentArena);

    mg_rect_atlas* atlas = mg_rect_atlas_create(&permanentArena, 16000, 16000);
    mg_image atlasImage = mg_image_create(surface, 16000, 16000);

    str8 path1 = path_executable_relative(mem_scratch(), STR8("../../sketches/resources/triceratops.png"));
    str8 path2 = path_executable_relative(mem_scratch(), STR8("../../sketches/resources/Top512.png"));

    mg_image_region image1 = mg_image_atlas_alloc_from_file(atlas, atlasImage, path1, false);
    mg_image_region image2 = mg_image_atlas_alloc_from_file(atlas, atlasImage, path2, false);

    // start app
    mp_window_bring_to_front(window);
    mp_window_focus(window);

    while(!mp_should_quit())
    {
        mp_pump_events(0);
        mp_event* event = 0;
        while((event = mp_next_event(mem_scratch())) != 0)
        {
            switch(event->type)
            {
                case MP_EVENT_WINDOW_CLOSE:
                {
                    mp_request_quit();
                }
                break;

                default:
                    break;
            }
        }

        mg_surface_prepare(surface);

        mg_set_color_rgba(0, 1, 1, 1);
        mg_clear();

        mg_set_color_rgba(1, 1, 1, 1);

        mg_image_draw_region(image1.image, image1.rect, (mp_rect){ 100, 100, 300, 300 });
        mg_image_draw_region(image2.image, image2.rect, (mp_rect){ 300, 200, 300, 300 });

        mg_render(surface, canvas);
        mg_surface_present(surface);

        mem_arena_clear(mem_scratch());
    }

    mg_image_atlas_recycle(atlas, image1);
    mg_image_atlas_recycle(atlas, image2);

    mg_canvas_destroy(canvas);
    mg_surface_destroy(surface);
    mp_window_destroy(window);

    mp_terminate();

    return (0);
}