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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* state.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: charles <charles.cabergs@gmail.com> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/05/11 01:31:10 by charles #+# #+# */
/* Updated: 2020/05/14 14:59:48 by charles ### ########.fr */
/* */
/* ************************************************************************** */
#include "scop.h"
/* static void st_resize_callback(GLFWwindow *window, int width, int height) */
/* { */
/* (void)window; */
/* glViewport(0, 0, width, height); */
/* ftm_mat4init_perspective(&g_state->proj, state.fov, (float)width / (float)height, 0.1, 100.0); */
/* } */
static void st_handle_event(t_state *state)
{
SDL_Event e;
while (SDL_PollEvent(&e))
{
if (e.type == SDL_QUIT)
state->running = false;
else if (e.type == SDL_KEYDOWN)
{
if (e.key.keysym.sym == SDLK_ESCAPE)
state->running = false;
else if (e.key.keysym.sym == SDLK_p)
{
if (state->polygon_mode == GL_FILL)
state->polygon_mode = GL_LINE;
else if (state->polygon_mode == GL_LINE)
state->polygon_mode = GL_POINT;
else if (state->polygon_mode == GL_POINT)
state->polygon_mode = GL_FILL;
GL_CALL(glPolygonMode(GL_FRONT_AND_BACK, state->polygon_mode));
}
}
else if (e.type == SDL_MOUSEWHEEL)
{
if (e.wheel.y > 0)
{
state->fov -= M_PI / 70.0f;
if (state->fov <= M_PI_4 / 3)
state->fov = M_PI_4 / 3;
}
else if (e.wheel.y < 0)
{
state->fov += M_PI / 70.0f;
if (state->fov >= M_PI - M_PI_4 / 3)
state->fov = M_PI - M_PI_4 / 3;
}
scene_update_proj(&state->scene, state->fov, state->width, state->height);
}
}
}
bool state_init(t_state *state, t_model_data *data)
{
if (SDL_Init(SDL_INIT_VIDEO) < 0)
return (false);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 4);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
state->window = SDL_CreateWindow(
"scop", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
WINDOW_WIDTH, WINDOW_HEIGHT, SDL_WINDOW_OPENGL);
if (state->window == NULL)
return (false);
state->context = SDL_GL_CreateContext(state->window);
if (glewInit() != GLEW_OK)
return (false);
SDL_GL_SetSwapInterval(1);
GL_CALL(glViewport(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT));
GL_CALL(glEnable(GL_DEPTH_TEST));
GL_CALL(glPolygonMode(GL_FRONT_AND_BACK, GL_LINE));
if (!shader_init(&state->shader))
return (false);
scene_init(&state->scene, data);
state->fov = M_PI_4;
state->running = true;
state->polygon_mode = GL_LINE;
state->width = WINDOW_WIDTH;
state->height = WINDOW_HEIGHT;
return (true);
}
void state_run(t_state *state)
{
float rotation;
rotation = M_PI_4;
while (state->running)
{
GL_CALL(glClearColor(0.1f, 0.1f, 0.1f, 1.0f));
GL_CALL(glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT));
GL_CALL(glUseProgram(state->shader.id));
shader_update_mvp(&state->shader, &state->scene);
GL_CALL(glBindVertexArray(state->scene.vertex_array));
GL_CALL(glDrawElements(GL_TRIANGLES, state->scene.index_buf_size, GL_UNSIGNED_INT, (void*)0));
scene_update_model(&state->scene, rotation);
SDL_GL_SwapWindow(state->window);
st_handle_event(state);
rotation += M_PI / 100.0;
}
}
void state_quit(t_state *state)
{
scene_quit(&state->scene);
GL_CALL(glDeleteProgram(state->shader.id));
SDL_GL_DeleteContext(state->context);
SDL_DestroyWindow(state->window);
SDL_Quit();
}
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