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-rw-r--r--src/mesh/mesh.c232
-rw-r--r--src/mesh/mesh.h62
2 files changed, 0 insertions, 294 deletions
diff --git a/src/mesh/mesh.c b/src/mesh/mesh.c
deleted file mode 100644
index 68e39d7..0000000
--- a/src/mesh/mesh.c
+++ /dev/null
@@ -1,232 +0,0 @@
-#include "mesh.h"
-
-static int honey_mesh_lua_draw(lua_State* L)
-{
- honey_mesh* mesh;
- int shader;
- honey_lua_parse_arguments(L, 2,
- HONEY_USERDATA, &mesh,
- HONEY_INTEGER, &shader);
- honey_mesh_draw(*mesh, shader);
- return 0;
-}
-
-static int honey_mesh_lua_delete(lua_State* L)
-{
- honey_mesh* mesh;
- honey_lua_parse_arguments(L, 1, HONEY_USERDATA, &mesh);
- honey_mesh_delete(*mesh);
- return 0;
-}
-
-void honey_setup_mesh(lua_State* L)
-{
- honey_lua_element mesh_elements[] = {
- { "load", HONEY_FUNCTION, { .function = honey_mesh_load } },
- { "draw", HONEY_FUNCTION, { .function = honey_mesh_lua_draw } },
- { "delete", HONEY_FUNCTION, { .function = honey_mesh_lua_delete } },
- };
-
- honey_lua_create_table(L, mesh_elements, 2);
-}
-
-/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
-
-static honey_mesh assimp_to_honey_mesh(struct aiMesh* mesh,
- struct aiScene* scene)
-{
- unsigned int vertex_step = 6;
- bool mesh_has_uvs = false;
- unsigned int n_vertices = mesh->mNumVertices;
-
- if (mesh->mTextureCoords[0]) {
- mesh_has_uvs = true;
- vertex_step = 8;
- }
-
- float* vertices = malloc(sizeof(float) * vertex_step * n_vertices);
- for (int i=0; i<n_vertices; i++) {
- int j = i*vertex_step;
- /* positions */
- vertices[j+0] = mesh->mVertices[i].x;
- vertices[j+1] = mesh->mVertices[i].y;
- vertices[j+2] = mesh->mVertices[i].z;
-
- /* normals */
- vertices[j+3] = mesh->mNormals[i].x;
- vertices[j+4] = mesh->mNormals[i].y;
- vertices[j+5] = mesh->mNormals[i].z;
-
- /* uvs? */
- if (mesh_has_uvs) {
- vertices[j+6] = mesh->mTextureCoords[0][i].x;
- vertices[j+7] = mesh->mTextureCoords[0][i].y;
- }
- }
-
- unsigned int n_indices = mesh->mNumFaces*3;
- unsigned int* indices = malloc(sizeof(unsigned int) * n_indices);
- for (int i=0; i<mesh->mNumFaces; i++) {
- int j = 3*i;
- struct aiFace face = mesh->mFaces[i];
- indices[j+0] = face.mIndices[0];
- indices[j+1] = face.mIndices[1];
- indices[j+2] = face.mIndices[2];
- }
-
- honey_mesh result;
-
- if (mesh_has_uvs) {
- unsigned int n_attributes = 3;
- unsigned int attribute_sizes[] = { 3, 3, 2 };
- honey_mesh_new(&result,
- vertices, n_vertices,
- n_attributes, attribute_sizes,
- indices, n_indices);
- }
- else {
- unsigned int n_attributes = 2;
- unsigned int attribute_sizes[] = { 3, 3 };
- honey_mesh_new(&result,
- vertices, n_vertices,
- n_attributes, attribute_sizes,
- indices, n_indices);
- }
-
- free(vertices);
- free(indices);
-
- return result;
-}
-
-/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
-
-static void process_nodes_recursively(lua_State* L,
- struct aiScene* scene,
- struct aiNode* node,
- int* n_meshes)
-{
- for (int i=0; i<node->mNumMeshes; i++) {
- honey_mesh* mesh = lua_newuserdata(L, sizeof(honey_mesh));
- struct aiMesh* assimp_mesh = scene->mMeshes[node->mMeshes[i]];
- *mesh = assimp_to_honey_mesh(assimp_mesh, scene);
- lua_rawseti(L, -2, *n_meshes);
- (*n_meshes)++;
- }
-
- for (int i=0; i<node->mNumChildren; i++) {
- process_nodes_recursively(L, scene, node->mChildren[i], n_meshes);
- }
-}
-
-/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
-
-int honey_mesh_load(lua_State* L)
-{
- char* filename;
- honey_lua_parse_arguments(L, 1, HONEY_STRING, &filename);
-
- int n_meshes = 1;
-
- struct aiScene* scene = aiImportFile(filename,
- aiProcess_Triangulate |
- aiProcess_FlipUVs);
- if (scene == NULL) {
- char* error;
- honey_format_string(&error, "could not open file '%s'", filename);
- lua_pushstring(L, error);
- free(error);
- lua_error(L);
- }
-
- if (scene->mFlags & AI_SCENE_FLAGS_INCOMPLETE ||
- scene->mRootNode == NULL) {
- char* error;
- honey_format_string(&error, "could not read mesh(es) in '%s'", filename);
- lua_pushstring(L, error);
- free(error);
- lua_error(L);
- }
-
- lua_createtable(L, 0, 0);
-
- process_nodes_recursively(L, scene, scene->mRootNode, &n_meshes);
-
- return 1;
-}
-
-/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
-
-honey_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) {
- if (vertices == NULL || n_vertices == 0) {
- return HONEY_MESH_BAD_VERTEX_DATA;
- }
- if (indices == NULL || n_indices == 0) {
- return HONEY_MESH_BAD_INDEX_DATA;
- }
-
- unsigned int vertex_size = 0;
- for (int i=0; i<n_attributes; i++) {
- vertex_size += attribute_sizes[i];
- }
-
- (*mesh).n_vertices = n_vertices;
- (*mesh).n_indices = n_indices;
-
- glGenVertexArrays(1, &((*mesh).vertex_array));
- glGenBuffers(1, &((*mesh).vertex_buffer));
- glGenBuffers(1, &((*mesh).element_buffer));
-
- glBindVertexArray((*mesh).vertex_array);
-
- glBindBuffer(GL_ARRAY_BUFFER, (*mesh).vertex_buffer);
- glBufferData(GL_ARRAY_BUFFER,
- vertex_size * n_vertices * sizeof(float),
- vertices, GL_STATIC_DRAW);
-
- glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, (*mesh).element_buffer);
- glBufferData(GL_ELEMENT_ARRAY_BUFFER,
- n_indices * sizeof(unsigned int),
- indices, GL_STATIC_DRAW);
-
- /* set up vertex attributes */
- unsigned int offset = 0;
- for (int i=0; i<n_attributes; i++) {
- glEnableVertexAttribArray(i);
- glVertexAttribPointer(i,
- attribute_sizes[i],
- GL_FLOAT,
- GL_FALSE,
- vertex_size*sizeof(float),
- (void*) (offset*sizeof(float)));
- offset += attribute_sizes[i];
- }
-
- glBindVertexArray(0);
-
- return HONEY_OK;
-}
-
-/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
-
-void honey_mesh_draw(honey_mesh mesh, int shader) {
- glUseProgram(shader);
-
- glBindVertexArray(mesh.vertex_array);
- glDrawElements(GL_TRIANGLES, mesh.n_indices, GL_UNSIGNED_INT, 0);
- glBindVertexArray(0);
-}
-
-/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
-
-void honey_mesh_delete(honey_mesh mesh) {
- glDeleteVertexArrays(1, &(mesh.vertex_array));
- glDeleteBuffers(1, &(mesh.vertex_buffer));
- glDeleteBuffers(1, &(mesh.element_buffer));
-}
diff --git a/src/mesh/mesh.h b/src/mesh/mesh.h
deleted file mode 100644
index 0f9c1a3..0000000
--- a/src/mesh/mesh.h
+++ /dev/null
@@ -1,62 +0,0 @@
-#ifndef HONEY_MESH_H
-#define HONEY_MESH_H
-
-/** @file mesh.h
- *
- * @brief Defines the honey_mesh struct and related basic mesh functions.
-*/
-
-#include "../common.h"
-
-typedef struct {
- unsigned int n_vertices, n_indices;
- unsigned int vertex_array, vertex_buffer, element_buffer;
-} honey_mesh;
-
-/** @brief Lua bindings for mesh drawing and deletion functions. */
-void honey_setup_mesh(lua_State* L);
-
-/** @brief Load all meshes from a file.
- *
- * @param[in] filename The name of the file to load from.
- *
- * @returns A table containing all of the meshes.
- */
-int honey_mesh_load(lua_State* L);
-
-/** @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
- */
-honey_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,
- int shader);
-
-/** @brief Delete a mesh.
- *
- * @param[in] mesh The mesh to delete
- */
-void honey_mesh_delete(honey_mesh mesh);
-
-#endif
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