From 1e436946514f3a0e9fe3d091394db6b86e06f033 Mon Sep 17 00:00:00 2001
From: kartofen <mladenovnasko0@gmail.com>
Date: Sat, 11 Nov 2023 19:00:10 +0200
Subject: .obj loading

---
 src/main.c | 73 ++++++++++++++++++++++++++++++++++++++++++++++++--------------
 1 file changed, 57 insertions(+), 16 deletions(-)

(limited to 'src/main.c')

diff --git a/src/main.c b/src/main.c
index c4bf2c3..edaf8a3 100644
--- a/src/main.c
+++ b/src/main.c
@@ -4,12 +4,15 @@
 #include <cglm/cglm.h>
 #include <cglm/struct.h>
 
+#include "objload.h"
+
+#define MONKEY
 #include "graphics.h"
 #include "window.h"
 #include "common.h"
 
-#define SW 640
-#define SH 480
+u32 width = 640;
+u32 height = 480;
 
 window_t window;
 graphics_t graphics;
@@ -21,19 +24,24 @@ struct ubo {
     mat4 model;
     mat4 view;
     mat4 proj;
-}; 
+};
+
+#ifndef MONKEY
 
 vertex_t vertices[] = {
-    {{-0.5f, -0.5f}, {1.0f, 0.0f, 0.0f}},
-    {{0.5f, -0.5f}, {0.0f, 1.0f, 0.0f}},
-    {{0.5f, 0.5f}, {0.0f, 0.0f, 1.0f}},
-    {{-0.5f, 0.5f}, {1.0f, 1.0f, 1.0f}}
+    {{-0.5f, -0.5f,   0.0f}, {0.0f, 0.0f, 0.0f}, {1.0f, 0.0f, 0.0f}},
+    {{ 0.5f, -0.5f,  -0.5f}, {0.0f, 0.0f, 0.0f}, {0.0f, 1.0f, 0.0f}},
+    {{ 0.5f,  0.5f,   0.0f}, {0.0f, 0.0f, 0.0f}, {0.0f, 0.0f, 1.0f}},    
+    {{-0.5f,  0.5f,  -0.5f}, {0.0f, 0.0f, 0.0f}, {1.0f, 1.0f, 1.0f}},
 };
 
+#endif
+
 u32 indices[] = {
     0, 1, 2, 2, 3, 0
 };
 
+
 int main(void)
 {
     int ret = 1;
@@ -46,9 +54,9 @@ int main(void)
     // populate window info
     struct window_info win_info = {0};
     win_info.title = "Test App";
-    // win_info.flags = SDL_WINDOW_RESIZABLE;
-    win_info.w = SW;
-    win_info.h = SH;
+    win_info.flags = SDL_WINDOW_RESIZABLE;
+    win_info.w = width;
+    win_info.h = height;
     
     // create window
     window = window_create(&win_info);
@@ -56,6 +64,33 @@ int main(void)
         err("window_create: failed");
         goto f2;
     }
+
+#ifdef MONKEY
+    vertex_t *objvertices;
+    size_t nvertices = 0;
+    
+    // Load obj
+    FILE *fp = fopen("../files/monkey.obj", "r");
+
+    objload_t obj = {0};
+    obj_load(fp, &obj);
+
+    struct obj_struct_metadata obj_metadata = {
+        sizeof(vertex_t),
+        offsetof(vertex_t, pos),
+        offsetof(vertex_t, color), 0,
+        OBJ_STRUCT_VERT_EXISTS |
+        OBJ_STRUCT_NORM_EXISTS
+    };
+    
+    obj_transfer_raw(obj, obj_metadata, &nvertices, NULL);
+    // leaks memory
+    objvertices = xcalloc(nvertices, sizeof(*objvertices));
+    obj_transfer_raw(obj, obj_metadata, &nvertices, objvertices);
+
+    obj_free(obj);
+    fclose(fp);
+#endif
     
     // get extensions
     unsigned int ext_count = 0;
@@ -71,11 +106,17 @@ int main(void)
 
     grph_info.ext_count = ext_count;
     grph_info.extensions = (const char * const *)extensions;
-    
+
+#ifndef MONKEY
     grph_info.vertices = vertices;
     grph_info.nvertices = ARR_SIZE(vertices);
+#else
+    grph_info.vertices = objvertices;
+    grph_info.nvertices = nvertices;
+#endif
+    
     grph_info.indices = indices;
-    grph_info.nindices = ARR_SIZE(indices);
+    grph_info.nindices = ARR_SIZE(indices);    
 
     grph_info.ubo_size = sizeof(struct ubo);
     grph_info.update_ubo = update_ubo;
@@ -120,12 +161,12 @@ int update_ubo(void *uniform_buffer)
     time += 0.01f;
 
     memcpy(ubo->model, glms_mat4_identity().raw, sizeof(ubo->model));
-    glm_rotate(&ubo->model, time * glm_rad(90.0f),
+    glm_rotate(ubo->model, time * glm_rad(90.0f),
                (vec3){0.0f, 0.0f, 1.0f});
 
-    glm_lookat((vec3){1.0f, 1.0f, 2.0f}, (vec3){0.0f, 0.0f, 0.0f}, (vec3){0.0f, 0.0f, 1.0f}, ubo->view);
- 
-    glm_perspective(glm_rad(45.0f), (float)SW/(float)SH, 0.1f, 10.0f, ubo->proj);
+    glm_lookat((vec3){2.0f, 2.0f, 2.0f}, (vec3){0.0f, 0.0f, 0.0f}, (vec3){0.0f, 0.0f, 1.0f}, ubo->view);
+
+    glm_perspective(glm_rad(45.0f), (float)width/(float)height, 0.1f, 10.0f, ubo->proj);
 
     ubo->proj[1][1] *= -1;
     return 0;
-- 
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