add textured cube primitive

1 files changed, 73 insertions, 0 deletions

diff --git a/src/primitives.c b/src/primitives.c
index 7cbea07..00cfdb9 100644
--- a/src/primitives.c
+++ b/src/primitives.c
@@ -45,4 +45,77 @@ enum honey_mesh_result honey_mesh_new_cube(honey_mesh* mesh,
   return result;
 }
 
+/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
 
+enum honey_mesh_result honey_mesh_new_textured_cube(honey_mesh* mesh,
+                                                    float width,
+                                                    float height,
+                                                    float depth) {
+  float x0 = 0;
+  float y0 = 0;
+  float z0 = 0;
+
+  float x1 = width;
+  float y1 = height;
+  float z1 = depth;
+
+  float vertices[] = {
+    /* position       tex coord */
+    /* back face */
+    x0, y0, z0,       0, 0,
+    x1, y0, z0,       1, 0,
+    x0, y1, z0,       0, 1,
+    x1, y1, z0,       1, 1,
+
+    /* front face */
+    x0, y0, z1,       0, 0,
+    x1, y0, z1,       1, 0,
+    x0, y1, z1,       0, 1,
+    x1, y1, z1,       1, 1,
+
+    /* left face */
+    x0, y0, z0,       0, 0,
+    x0, y1, z0,       1, 0,
+    x0, y0, z1,       0, 1,
+    x0, y1, z1,       1, 1,
+
+    /* right face */
+    x1, y0, z0,       0, 0,
+    x1, y1, z0,       1, 0,
+    x1, y0, z1,       0, 1,
+    x1, y1, z1,       1, 1,
+
+    /* bottom face */
+    x0, y0, z0,       0, 0,
+    x1, y0, z0,       1, 0,
+    x0, y0, z1,       0, 1,
+    x1, y0, z1,       1, 1,
+    
+    /* top face */
+    x0, y1, z0,       0, 0,
+    x1, y1, z0,       1, 0,
+    x0, y1, z1,       0, 1,
+    x1, y1, z1,       1, 1 };
+
+  unsigned int indices[] = {
+    0, 1, 2,
+    1, 2, 3,
+    4, 5, 6,
+    5, 6, 7,
+    8, 9, 10,
+    9, 10, 11,
+    12, 13, 14,
+    13, 14, 15,
+    16, 17, 18,
+    17, 18, 19,
+    20, 21, 22,
+    21, 22, 23 };
+
+  unsigned int attrib_sizes[] = { 3, 2 };
+
+  enum honey_mesh_result result;
+  result = honey_mesh_new(mesh, vertices, 24,
+                          2, attrib_sizes,
+                          indices, 36);
+  return result;
+}