From f1fe73d1909a2448a004a88362a1a532d0d4f7c3 Mon Sep 17 00:00:00 2001
From: sanine <sanine.not@pm.me>
Date: Sun, 12 Feb 2023 23:53:22 -0600
Subject: switch to tinyobj and nanovg from assimp and cairo

---
 src/import/CMakeLists.txt |   8 +-
 src/import/import.c       | 286 +---------------------------------------------
 2 files changed, 9 insertions(+), 285 deletions(-)

(limited to 'src/import')

diff --git a/src/import/CMakeLists.txt b/src/import/CMakeLists.txt
index 358e96c..31390f6 100644
--- a/src/import/CMakeLists.txt
+++ b/src/import/CMakeLists.txt
@@ -6,8 +6,8 @@ target_sources(honey PUBLIC
 
 
 target_sources(test PUBLIC
-	${CMAKE_CURRENT_LIST_DIR}/import.test.c
-	${CMAKE_CURRENT_LIST_DIR}/import_mesh.test.c
-	${CMAKE_CURRENT_LIST_DIR}/import_node.test.c
-	${CMAKE_CURRENT_LIST_DIR}/import_scene.test.c
+	# ${CMAKE_CURRENT_LIST_DIR}/import.test.c
+	# ${CMAKE_CURRENT_LIST_DIR}/import_mesh.test.c
+	# ${CMAKE_CURRENT_LIST_DIR}/import_node.test.c
+	# ${CMAKE_CURRENT_LIST_DIR}/import_scene.test.c
 )
diff --git a/src/import/import.c b/src/import/import.c
index becb1fe..f860396 100644
--- a/src/import/import.c
+++ b/src/import/import.c
@@ -1,297 +1,21 @@
 #include <lua.h>
 #include <honeysuckle.h>
-#include <assimp/scene.h>
-#include <assimp/cimport.h>
-#include <assimp/postprocess.h>
 #include "import.h"
 
+#define TINYOBJ_LOADER_C_IMPLEMENTATION
+#include <tinyobj/tinyobj_loader_c.h>
 
-#ifndef LILY_TEST_H
-
-static void push_scene(lua_State *L, struct aiScene *scene);
-
-int import_file(lua_State *L)
+int dummy(lua_State *L)
 {
-	char *filename;
-	hs_parse_args(L, hs_str(filename));
-
-	const struct aiScene *scene = aiImportFile(
-		filename, 
-		aiProcess_Triangulate | aiProcess_FlipUVs
-	);
-	if (scene == NULL)
-		hs_throw_error(L, "failed to load file '%s'", filename);
-	
-	push_scene(L, (struct aiScene*) scene);
-	return 1;
+	return 0;
 }
 
 
 void setup_import(lua_State *L, int honey_tbl)
 {
 	hs_create_table(L,
-		hs_str_cfunc("importFile", import_file),
+		hs_str_cfunc("dummy", dummy),
 	);
 
 	lua_setfield(L, honey_tbl, "import");
 }
-
-#endif
-
-
-static void push_vector(lua_State *L, struct aiVector3D vec)
-{
-	hs_create_table(L,
-		hs_str_num("x", vec.x),
-		hs_str_num("y", vec.y),
-		hs_str_num("z", vec.z),
-	);
-}
-
-
-static void push_face(lua_State *L, struct aiFace face)
-{
-	lua_createtable(L, face.mNumIndices, 0);
-	int tbl = lua_gettop(L);
-
-	for (int i=0; i<face.mNumIndices; i++) {
-		/* add one to the index bc lua is 1-indexed */
-		/* the above comment is WRONG WRONG WRONG!!
-		 * lua is indeed 1-indexed, but this data is being interpreted
-		 * by *opengl* not lua. we should not add 1!!
-		 */
-		lua_pushinteger(L, face.mIndices[i]);
-		lua_rawseti(L, tbl, i+1);
-	}
-}
-
-
-static void push_aistring(lua_State *L, struct aiString str)
-{
-	lua_pushstring(L, str.data);
-}
-
-
-#ifndef TEST_IMPORT_SCENE
-
-/* mesh components:
- * DONE:
- * mBitangents
- * mFaces
- * mNormals
- * mNumFaces
- * mNumVertices
- * mTangents
- * mVertices
- * mNumUVComponents
- * mTextureCoords
- *
- * TODO:
- * mAnimMeshes
- * mBones
- * mColors
- * mMaterialIndex
- * mMethod
- * mName
- * mNumAnimMeshes
- * mNumBones
- * mPrimitiveTypes
- * mTextureCoordsNames
- */
-static void push_mesh(lua_State *L, struct aiMesh *mesh)
-{
-	/* --=== create mesh table ===-- */
-	lua_createtable(L, 0, 1);
-	int meshtbl = lua_gettop(L);
-
-	int count = mesh->mNumVertices;
-	int pop_count = 0;
-
-	/* --=== create tables ===-- */
-
-	/* positions */
-	lua_createtable(L, count, 0);
-	int vertices = lua_gettop(L);
-	pop_count += 1;
-
-	/* normals */
-	int normals = 0;
-	if (mesh->mNormals != NULL) {
-		lua_createtable(L, count, 0);
-		normals = lua_gettop(L);
-		pop_count += 1;
-	}
-
-	/* tangents & bitangents */
-	int tangents = 0;
-	int bitangents = 0;
-	if (mesh->mTangents != NULL) {
-		lua_createtable(L, count, 0);
-		tangents = lua_gettop(L);
-		lua_createtable(L, count, 0);
-		bitangents = lua_gettop(L);
-		pop_count += 2;
-	}
-
-	/* uvs */
-	int uvs = 0;
-	int uv_components = 0;
-	int uv_channels[AI_MAX_NUMBER_OF_TEXTURECOORDS];
-	for (int i=0; i<AI_MAX_NUMBER_OF_TEXTURECOORDS; i++) {
-		if (mesh->mTextureCoords[i] != NULL) {
-			if (!uvs) {
-				/* ensure uv table is created */
-				lua_createtable(L, 1, 0);
-				uvs = lua_gettop(L);
-				lua_createtable(L, 1, 0);
-				uv_components = lua_gettop(L);
-				pop_count += 2;
-			}
-			lua_createtable(L, count, 0);
-			uv_channels[i] = lua_gettop(L);
-			pop_count += 1;
-
-			/* store table in uvs */
-			lua_pushvalue(L, uv_channels[i]);
-			lua_rawseti(L, uvs, i+1);
-			/* store dimensionality */
-			lua_pushinteger(L, mesh->mNumUVComponents[i]);
-			lua_rawseti(L, uv_components, i+1);
-		}
-		else
-			uv_channels[i] = 0;
-	}
-
-	/* --=== populate vertices ===-- */
-
-	for (int i=0; i<count; i++) {
-		/* positions */
-		push_vector(L, mesh->mVertices[i]);
-		lua_rawseti(L, vertices, i+1);
-
-		/* normals */
-		if (normals) {
-			push_vector(L, mesh->mNormals[i]);
-			lua_rawseti(L, normals, i+1);
-		}
-
-		/* tangents */
-		if (tangents) {
-			push_vector(L, mesh->mTangents[i]);
-			lua_rawseti(L, tangents, i+1);
-			push_vector(L, mesh->mBitangents[i]);
-			lua_rawseti(L, bitangents, i+1);
-		}
-
-		/* uvs */
-		if (uvs) {
-			for (int j=0; j<AI_MAX_NUMBER_OF_TEXTURECOORDS; j++) {
-				if (uv_channels[j]) {
-					push_vector(L, mesh->mTextureCoords[j][i]);
-					lua_rawseti(L, uv_channels[j], i+1);
-				}
-			}
-		}
-	}
-
-	/* --=== populate faces ===-- */
-
-	int faces = 0;
-	if (mesh->mNumFaces != 0) {
-		lua_createtable(L, mesh->mNumFaces, 0);
-		faces = lua_gettop(L);
-		pop_count += 1;
-		for (int i=0; i<mesh->mNumFaces; i++) {
-			push_face(L, mesh->mFaces[i]);
-			lua_rawseti(L, faces, i+1);
-		}
-	}
-
-	/* --=== assign values ===-- */
-
-	lua_pushvalue(L, vertices);
-	lua_setfield(L, meshtbl, "vertices");
-
-	if (normals) {
-		lua_pushvalue(L, normals);
-		lua_setfield(L, meshtbl, "normals");
-	}
-
-	if (tangents) {
-		lua_pushvalue(L, tangents);
-		lua_setfield(L, meshtbl, "tangents");
-		lua_pushvalue(L, bitangents);
-		lua_setfield(L, meshtbl, "bitangents");
-	}
-
-	if (faces) {
-		lua_pushvalue(L, faces);
-		lua_setfield(L, meshtbl, "faces");
-	}
-
-	if (uvs) {
-		lua_pushvalue(L, uvs);
-		lua_setfield(L, meshtbl, "uvs");
-		lua_pushvalue(L, uv_components);
-		lua_setfield(L, meshtbl, "numUvComponents");
-	}
-
-	/* --=== clean up ===-- */
-	lua_pop(L, pop_count);
-}
-
-
-static void push_node(lua_State *L, struct aiNode *node)
-{
-	lua_createtable(L, 0, 0);
-	int nodetbl = lua_gettop(L);
-
-	int pop_count = 0;
-	
-	if (node->mMeshes != NULL) {
-		lua_createtable(L, node->mNumMeshes, 0);
-		int meshes = lua_gettop(L);
-		for (int i=0; i<node->mNumMeshes; i++) {
-			lua_pushinteger(L, node->mMeshes[i]+1);
-			lua_rawseti(L, meshes, i+1);
-		}
-		lua_setfield(L, nodetbl, "meshes");
-	}
-
-	if (node->mChildren != NULL) {
-		lua_createtable(L, node->mNumChildren, 0);
-		int children = lua_gettop(L);
-		for (int i=0; i<node->mNumChildren; i++) {
-			push_node(L, node->mChildren[i]);
-			lua_rawseti(L, children, i+1);
-		}
-		lua_setfield(L, nodetbl, "children");
-	}
-}
-
-#endif
-
-
-static void push_scene(lua_State *L, struct aiScene *scene)
-{
-	/* meshes */
-	lua_createtable(L, scene->mNumMeshes, 0);
-	int meshtbl = lua_gettop(L);
-	for (int i=0; i<scene->mNumMeshes; i++) {
-		push_mesh(L, scene->mMeshes[i]);
-		lua_rawseti(L, meshtbl, i+1);
-	}
-
-	/* nodes */
-	push_node(L, scene->mRootNode);
-	int nodetbl = lua_gettop(L);
-
-	/* scene */
-	hs_create_table(L,
-		hs_str_tbl("rootNode", nodetbl),
-		hs_str_tbl("meshes", meshtbl),
-	);
-}
-
-
-
-- 
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