add assimp submodule

1 files changed, 270 insertions, 0 deletions

diff --git a/src/mesh/assimp-master/code/AssetLib/AC/ACLoader.h b/src/mesh/assimp-master/code/AssetLib/AC/ACLoader.h
new file mode 100644
index 0000000..aabc114
--- /dev/null
+++ b/src/mesh/assimp-master/code/AssetLib/AC/ACLoader.h
@@ -0,0 +1,270 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2022, assimp team
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the
+following conditions are met:
+
+* Redistributions of source code must retain the above
+  copyright notice, this list of conditions and the
+  following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+  copyright notice, this list of conditions and the
+  following disclaimer in the documentation and/or other
+  materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+  contributors may be used to endorse or promote products
+  derived from this software without specific prior
+  written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+
+/** @file  ACLoader.h
+ *  @brief Declaration of the .ac importer class.
+ */
+#ifndef AI_AC3DLOADER_H_INCLUDED
+#define AI_AC3DLOADER_H_INCLUDED
+
+#include <vector>
+
+#include <assimp/BaseImporter.h>
+#include <assimp/types.h>
+
+struct aiNode;
+struct aiMesh;
+struct aiMaterial;
+struct aiLight;
+
+namespace Assimp {
+
+// ---------------------------------------------------------------------------
+/** AC3D (*.ac) importer class
+*/
+class AC3DImporter : public BaseImporter {
+public:
+    AC3DImporter();
+    ~AC3DImporter() override;
+
+    // Represents an AC3D material
+    struct Material {
+        Material() :
+                rgb(0.6f, 0.6f, 0.6f),
+                spec(1.f, 1.f, 1.f),
+                shin(0.f),
+                trans(0.f) {}
+
+        // base color of the material
+        aiColor3D rgb;
+
+        // ambient color of the material
+        aiColor3D amb;
+
+        // emissive color of the material
+        aiColor3D emis;
+
+        // specular color of the material
+        aiColor3D spec;
+
+        // shininess exponent
+        float shin;
+
+        // transparency. 0 == opaque
+        float trans;
+
+        // name of the material. optional.
+        std::string name;
+    };
+
+    // Represents an AC3D surface
+    struct Surface {
+        Surface() :
+                mat(0),
+                flags(0) {}
+
+        unsigned int mat, flags;
+
+        typedef std::pair<unsigned int, aiVector2D> SurfaceEntry;
+        std::vector<SurfaceEntry> entries;
+
+        // Type is low nibble of flags
+        enum Type : uint8_t {
+            Polygon = 0x0,
+            ClosedLine = 0x1,
+            OpenLine = 0x2,
+            TriangleStrip = 0x4, // ACC extension (TORCS and Speed Dreams)
+
+            Mask = 0xf,
+        };
+
+        inline uint8_t GetType() const { return (flags & Mask); }
+    };
+
+    // Represents an AC3D object
+    struct Object {
+        Object() :
+                type(World),
+                name(),
+                children(),
+                texture(),
+                texRepeat(1.f, 1.f),
+                texOffset(0.0f, 0.0f),
+                rotation(),
+                translation(),
+                vertices(),
+                surfaces(),
+                numRefs(0),
+                subDiv(0),
+                crease() {}
+
+        // Type description
+        enum Type {
+            World = 0x0,
+            Poly = 0x1,
+            Group = 0x2,
+            Light = 0x4
+        } type;
+
+        // name of the object
+        std::string name;
+
+        // object children
+        std::vector<Object> children;
+
+        // texture to be assigned to all surfaces of the object
+        std::string texture;
+
+        // texture repat factors (scaling for all coordinates)
+        aiVector2D texRepeat, texOffset;
+
+        // rotation matrix
+        aiMatrix3x3 rotation;
+
+        // translation vector
+        aiVector3D translation;
+
+        // vertices
+        std::vector<aiVector3D> vertices;
+
+        // surfaces
+        std::vector<Surface> surfaces;
+
+        // number of indices (= num verts in verbose format)
+        unsigned int numRefs;
+
+        // number of subdivisions to be performed on the
+        // imported data
+        unsigned int subDiv;
+
+        // max angle limit for smoothing
+        float crease;
+    };
+
+public:
+    // -------------------------------------------------------------------
+    /** Returns whether the class can handle the format of the given file.
+     * See BaseImporter::CanRead() for details.
+     */
+    bool CanRead(const std::string &pFile, IOSystem *pIOHandler,
+            bool checkSig) const override;
+
+protected:
+    // -------------------------------------------------------------------
+    /** Return importer meta information.
+     * See #BaseImporter::GetInfo for the details */
+    const aiImporterDesc *GetInfo() const override;
+
+    // -------------------------------------------------------------------
+    /** Imports the given file into the given scene structure.
+     * See BaseImporter::InternReadFile() for details*/
+    void InternReadFile(const std::string &pFile, aiScene *pScene,
+            IOSystem *pIOHandler) override;
+
+    // -------------------------------------------------------------------
+    /** Called prior to ReadFile().
+    * The function is a request to the importer to update its configuration
+    * basing on the Importer's configuration property list.*/
+    void SetupProperties(const Importer *pImp) override;
+
+private:
+    // -------------------------------------------------------------------
+    /** Get the next line from the file.
+     *  @return false if the end of the file was reached*/
+    bool GetNextLine();
+
+    // -------------------------------------------------------------------
+    /** Load the object section. This method is called recursively to
+     *  load subobjects, the method returns after a 'kids 0' was
+     *  encountered.
+     *  @objects List of output objects*/
+    void LoadObjectSection(std::vector<Object> &objects);
+
+    // -------------------------------------------------------------------
+    /** Convert all objects into meshes and nodes.
+     *  @param object Current object to work on
+     *  @param meshes Pointer to the list of output meshes
+     *  @param outMaterials List of output materials
+     *  @param materials Material list
+     *  @param Scenegraph node for the object */
+    aiNode *ConvertObjectSection(Object &object,
+            std::vector<aiMesh *> &meshes,
+            std::vector<aiMaterial *> &outMaterials,
+            const std::vector<Material> &materials,
+            aiNode *parent = nullptr);
+
+    // -------------------------------------------------------------------
+    /** Convert a material
+     *  @param object Current object
+     *  @param matSrc Source material description
+     *  @param matDest Destination material to be filled */
+    void ConvertMaterial(const Object &object,
+            const Material &matSrc,
+            aiMaterial &matDest);
+
+private:
+    // points to the next data line
+    const char *buffer;
+
+    // Configuration option: if enabled, up to two meshes
+    // are generated per material: those faces who have
+    // their bf cull flags set are separated.
+    bool configSplitBFCull;
+
+    // Configuration switch: subdivision surfaces are only
+    // evaluated if the value is true.
+    bool configEvalSubdivision;
+
+    // counts how many objects we have in the tree.
+    // basing on this information we can find a
+    // good estimate how many meshes we'll have in the final scene.
+    unsigned int mNumMeshes;
+
+    // current list of light sources
+    std::vector<aiLight *> *mLights;
+
+    // name counters
+    unsigned int mLightsCounter, mGroupsCounter, mPolysCounter, mWorldsCounter;
+};
+
+} // end of namespace Assimp
+
+#endif // AI_AC3DIMPORTER_H_INC