From 040ba6826237eb124aaa4576fc302e2e07dd40c5 Mon Sep 17 00:00:00 2001
From: sanine-a <sanine.not@pm.me>
Date: Wed, 20 May 2020 20:51:05 -0500
Subject: add honey_mesh and assorted related functions

---
 include/common.h | 17 ++++++++++++++++
 include/honey.h  | 17 ++++++++++++++++
 include/mesh.h   | 59 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 include/shader.h |  2 +-
 4 files changed, 94 insertions(+), 1 deletion(-)
 create mode 100644 include/common.h
 create mode 100644 include/honey.h
 create mode 100644 include/mesh.h

(limited to 'include')

diff --git a/include/common.h b/include/common.h
new file mode 100644
index 0000000..8c1f976
--- /dev/null
+++ b/include/common.h
@@ -0,0 +1,17 @@
+#ifndef HONEY_COMMON_H
+#define HONEY_COMMON_H
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <string.h>
+
+#include "glad.h"
+#include <GLFW/glfw3.h>
+
+#include <cglm/cglm.h>
+#include <cglm/call.h>
+
+#include "stb_image.h"
+
+#endif
diff --git a/include/honey.h b/include/honey.h
new file mode 100644
index 0000000..251881e
--- /dev/null
+++ b/include/honey.h
@@ -0,0 +1,17 @@
+#ifndef HONEY_ENGINE_H
+#define HONEY_ENGINE_H
+
+#include "common.h"
+#include "mesh.h"
+#include "shader.h"
+
+typedef GLFWwindow* honey_window;
+
+honey_window honey_setup(int screen_width, int screen_height, char* window_title);
+
+#define honey_set_resize_callback glfwSetFramebufferSizeCallback
+#define honey_set_mouse_move_callback glfwSetCursorPosCallback
+
+#define honey_quit glfwTerminate
+
+#endif
diff --git a/include/mesh.h b/include/mesh.h
new file mode 100644
index 0000000..2040f44
--- /dev/null
+++ b/include/mesh.h
@@ -0,0 +1,59 @@
+/** @brief Defines the honey_mesh struct and related basic mesh functions. */
+
+#ifndef HONEY_MESH_H
+#define HONEY_MESH_H
+
+#include "common.h"
+#include "shader.h"
+
+enum honey_mesh_result {
+  MESH_OK,
+  MEMORY_ERROR,
+  BAD_VERTEX_DATA,
+  BAD_INDEX_DATA,
+  N_MESH_RESULTS };
+
+typedef struct {
+  float* vertices;
+  unsigned int n_vertices;
+  unsigned int* indices;
+  unsigned int n_indices;
+  unsigned int vertex_array, vertex_buffer, element_buffer;
+} honey_mesh;
+
+/** @brief Create a new mesh from vertex and index arrays.
+ *
+ * Note that this function creates copies of the vertex and index arrays, 
+ * so you can deallocate those immediately.
+ *
+ * @param[out] mesh Pointer to the destination honey_mesh struct
+ * @param[in] vertices Array of floats representing the vertices
+ * @param[in] n_attributes The number of attributes per vertex
+ * @param[in] attribute_sizes An array containing for each attribute how many floats it contains
+ * @param[in] n_vertices The number of vertices (NOT the number of floats in the vertex array)
+ * @param[in] indices Array of vertex indices
+ * @param[in] n_indices The number of elements in the index array
+ */
+enum honey_mesh_result honey_mesh_new(honey_mesh* mesh,
+                                      float* vertices,
+                                      unsigned int n_vertices,
+                                      unsigned int n_attributes,
+                                      unsigned int* attribute_sizes,
+                                      unsigned int* indices,
+                                      unsigned int n_indices);
+
+/** @brief Draw a mesh on screen.
+ *
+ * @param[in] mesh The mesh to draw
+ * @param[in] shader The shader to use when drawing the mesh
+ */
+void honey_mesh_draw(honey_mesh mesh,
+                     honey_shader shader);
+
+/** @brief Delete a mesh.
+ *
+ * @param[in] mesh The mesh to delete
+ */
+void honey_mesh_delete(honey_mesh mesh);
+  
+#endif
diff --git a/include/shader.h b/include/shader.h
index d43015d..bfdb090 100644
--- a/include/shader.h
+++ b/include/shader.h
@@ -6,7 +6,7 @@
 #ifndef HONEY_SHADER_H
 #define HONEY_SHADER_H
 
-#include <cglm/cglm.h>
+#include "common.h"
 
 enum honey_shader_result {
   SHADER_OK,
-- 
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