working on cube (hardcoded)

1 files changed, 67 insertions, 0 deletions

diff --git a/src/maths/primitives.h b/src/maths/primitives.h
new file mode 100644
index 0000000..60d36da
--- /dev/null
+++ b/src/maths/primitives.h
@@ -0,0 +1,67 @@
+#pragma once
+
+#include <assert.h>
+#include "core.h"
+#include "render_types.h"
+
+static float cube_vertices[] = {
+  // positions          // normals           // texture coords
+  -0.5f, -0.5f, -0.5f, 0.0f,  0.0f,  -1.0f, 0.0f,  0.0f,  0.5f,  -0.5f, -0.5f, 0.0f,
+  0.0f,  -1.0f, 1.0f,  0.0f,  0.5f,  0.5f,  -0.5f, 0.0f,  0.0f,  -1.0f, 1.0f,  1.0f,
+  0.5f,  0.5f,  -0.5f, 0.0f,  0.0f,  -1.0f, 1.0f,  1.0f,  -0.5f, 0.5f,  -0.5f, 0.0f,
+  0.0f,  -1.0f, 0.0f,  1.0f,  -0.5f, -0.5f, -0.5f, 0.0f,  0.0f,  -1.0f, 0.0f,  0.0f,
+
+  -0.5f, -0.5f, 0.5f,  0.0f,  0.0f,  1.0f,  0.0f,  0.0f,  0.5f,  -0.5f, 0.5f,  0.0f,
+  0.0f,  1.0f,  1.0f,  0.0f,  0.5f,  0.5f,  0.5f,  0.0f,  0.0f,  1.0f,  1.0f,  1.0f,
+  0.5f,  0.5f,  0.5f,  0.0f,  0.0f,  1.0f,  1.0f,  1.0f,  -0.5f, 0.5f,  0.5f,  0.0f,
+  0.0f,  1.0f,  0.0f,  1.0f,  -0.5f, -0.5f, 0.5f,  0.0f,  0.0f,  1.0f,  0.0f,  0.0f,
+
+  -0.5f, 0.5f,  0.5f,  -1.0f, 0.0f,  0.0f,  1.0f,  0.0f,  -0.5f, 0.5f,  -0.5f, -1.0f,
+  0.0f,  0.0f,  1.0f,  1.0f,  -0.5f, -0.5f, -0.5f, -1.0f, 0.0f,  0.0f,  0.0f,  1.0f,
+  -0.5f, -0.5f, -0.5f, -1.0f, 0.0f,  0.0f,  0.0f,  1.0f,  -0.5f, -0.5f, 0.5f,  -1.0f,
+  0.0f,  0.0f,  0.0f,  0.0f,  -0.5f, 0.5f,  0.5f,  -1.0f, 0.0f,  0.0f,  1.0f,  0.0f,
+
+  0.5f,  0.5f,  0.5f,  1.0f,  0.0f,  0.0f,  1.0f,  0.0f,  0.5f,  0.5f,  -0.5f, 1.0f,
+  0.0f,  0.0f,  1.0f,  1.0f,  0.5f,  -0.5f, -0.5f, 1.0f,  0.0f,  0.0f,  0.0f,  1.0f,
+  0.5f,  -0.5f, -0.5f, 1.0f,  0.0f,  0.0f,  0.0f,  1.0f,  0.5f,  -0.5f, 0.5f,  1.0f,
+  0.0f,  0.0f,  0.0f,  0.0f,  0.5f,  0.5f,  0.5f,  1.0f,  0.0f,  0.0f,  1.0f,  0.0f,
+
+  -0.5f, -0.5f, -0.5f, 0.0f,  -1.0f, 0.0f,  0.0f,  1.0f,  0.5f,  -0.5f, -0.5f, 0.0f,
+  -1.0f, 0.0f,  1.0f,  1.0f,  0.5f,  -0.5f, 0.5f,  0.0f,  -1.0f, 0.0f,  1.0f,  0.0f,
+  0.5f,  -0.5f, 0.5f,  0.0f,  -1.0f, 0.0f,  1.0f,  0.0f,  -0.5f, -0.5f, 0.5f,  0.0f,
+  -1.0f, 0.0f,  0.0f,  0.0f,  -0.5f, -0.5f, -0.5f, 0.0f,  -1.0f, 0.0f,  0.0f,  1.0f,
+
+  -0.5f, 0.5f,  -0.5f, 0.0f,  1.0f,  0.0f,  0.0f,  1.0f,  0.5f,  0.5f,  -0.5f, 0.0f,
+  1.0f,  0.0f,  1.0f,  1.0f,  0.5f,  0.5f,  0.5f,  0.0f,  1.0f,  0.0f,  1.0f,  0.0f,
+  0.5f,  0.5f,  0.5f,  0.0f,  1.0f,  0.0f,  1.0f,  0.0f,  -0.5f, 0.5f,  0.5f,  0.0f,
+  1.0f,  0.0f,  0.0f,  0.0f,  -0.5f, 0.5f,  -0.5f, 0.0f,  1.0f,  0.0f,  0.0f,  1.0f
+};
+
+static mesh prim_cube_mesh_create() {
+  mesh cube = { 0 };
+  cube.vertices = vertex_darray_new(36);
+
+  for (int i = 0; i < 36; i++) {
+    vertex vert = { .position = vec3_create(cube_vertices[(i * 8) + 0], cube_vertices[(i * 8) + 1],
+                                            cube_vertices[(i * 8) + 2]),
+                    .normal = vec3_create(cube_vertices[(i * 8) + 3], cube_vertices[(i * 8) + 4],
+                                          cube_vertices[(i * 8) + 5]),
+                    .uv = (vec2){ .x = cube_vertices[(i * 8) + 6],
+                                  .y = cube_vertices[(i * 8) + 7] } };
+    vertex_darray_push(cube.vertices, vert);
+  }
+  return cube;
+}
+
+/** @brief create a new model with the shape of a cube */
+static model_handle prim_cube_new(core* core) {
+     model model = { 0 };
+  mesh cube = prim_cube_mesh_create();
+
+  mesh_darray_push(model.meshes, cube);
+  assert(mesh_darray_len(model.meshes) == 1);
+
+  u32 index = (u32)model_darray_len(core->models);
+  model_darray_push_copy(core->models, &model);
+  return (model_handle){ .raw = index };
+}
\ No newline at end of file