add ADecompose.h animation

CMakeLists.txt

@@ -86,6 +86,7 @@ add_executable(${CMAKE_PROJECT_NAME}
         engine/animation/AShowCreation.h
         engine/animation/AShowUncreation.h
         engine/animation/ARotateLeftUpLookAt.h
+        engine/animation/ADecompose.h
         engine/physics/RigidBody.cpp
         engine/physics/RigidBody.h
         engine/physics/Simplex.h

engine/animation/ADecompose.h

@@ -0,0 +1,50 @@
+//
+// Created by Иван Ильин on 23.02.2022.
+//
+
+#ifndef INC_3DZAVR_ADECOMPOSE_H
+#define INC_3DZAVR_ADECOMPOSE_H
+
+#include "Animation.h"
+#include "../Mesh.h"
+#include "../Consts.h"
+
+class ADecompose final : public Animation {
+private:
+    const std::weak_ptr<Mesh> _mesh;
+    std::vector<Triangle> _triangles;
+
+    double _value;
+    bool _started = false;
+
+    void update() override {
+        auto mesh = _mesh.lock();
+
+        if (mesh == nullptr) {
+            stop();
+            return;
+        }
+
+        if (!_started) {
+            _started = true;
+            _triangles = _mesh.lock()->triangles();
+        }
+
+        std::vector<Triangle> newTriangles;
+        newTriangles.reserve(_triangles.size());
+
+        for(auto &t : _triangles) {
+            newTriangles.emplace_back((t * Matrix4x4::Translation(t.position().normalized()*progress()*_value)));
+        }
+        mesh->setTriangles(std::move(newTriangles));
+        mesh->glFreeFloatArray();
+    }
+
+public:
+    ADecompose(std::weak_ptr<Mesh> mesh, double value, double duration = 1, LoopOut looped = LoopOut::None,
+               InterpolationType interpolationType = InterpolationType::Bezier) : Animation(duration, looped,
+                                                                                               interpolationType),
+                                                                                  _value(value), _mesh(mesh) {}
+};
+
+#endif //INC_3DZAVR_ADECOMPOSE_H

engine/animation/Animations.h

@@ -20,6 +20,7 @@
 #include "AShowCreation.h"
 #include "AShowUncreation.h"
 #include "ARotateLeftUpLookAt.h"
+#include "ADecompose.h"
 
 
 #endif //SHOOTER_ANIMATIONS_H