推

source/EngineFrame/Component/AnimationMap.cpp

@@ -0,0 +1,132 @@
+#include "AnimationMap.h"
+#include "EngineCore/Game.h"
+#include "EngineFrame/Render/RenderManager.h"
+AnimationMap::~AnimationMap()
+{
+}
+
+void AnimationMap::CompleteConstruction()
+{
+    m_size = {800, 600};
+    // 遍历自己的所持有的所有Ani 取最大的尺寸
+    auto &ac = this->GetAllChildren();
+    RefPtr<Node> child = ac.GetFirst();
+    while (child)
+    {
+        Animation *anim = static_cast<Animation *>(child.Get());
+        auto size = anim->GetMaxSize();
+        if (size.width > m_size.width)
+            m_size.width = size.width;
+        if (size.height > m_size.height)
+            m_size.height = size.height;
+        child = child->GetNext();
+    }
+
+    SetSize(m_size);
+    // 创建指定大小的纹理
+    m_texture = new Texture();
+    m_texture->Init(m_size);
+
+    // 构造FBO
+    glGenFramebuffers(1, &m_fbo);
+    glBindFramebuffer(GL_FRAMEBUFFER, m_fbo);
+    // 将目标纹理附加到FBO的颜色附着点
+    glFramebufferTexture2D(
+        GL_FRAMEBUFFER,       // 帧缓冲类型
+        GL_COLOR_ATTACHMENT0, // 颜色附着点（可多个，这里用第一个）
+        GL_TEXTURE_2D,        // 纹理类型
+        m_texture->getID(),   // 目标纹理ID
+        0                     // 多级渐远纹理级别
+    );
+    glBindFramebuffer(GL_FRAMEBUFFER, 0); // 解绑FBO
+}
+
+void AnimationMap::AddAnimation(RefPtr<Animation> animation)
+{
+    this->AddChild(animation);
+}
+
+void AnimationMap::Reset()
+{
+    auto &ac = this->GetAllChildren();
+    RefPtr<Node> child = ac.GetFirst();
+    while (child)
+    {
+        Animation *anim = static_cast<Animation *>(child.Get());
+        anim->Reset();
+        child = child->GetNext();
+    }
+}
+
+void AnimationMap::Render()
+{
+    Actor::PreRender();
+    Actor::PrepareToRender();
+    Actor::OnRender();
+}
+
+void AnimationMap::OnRender()
+{
+    RenderManager *renderer = Game::GetInstance().GetRenderer();
+    renderer->DrawTexture(m_texture);
+}
+
+void AnimationMap::OnUpdate(float deltaTime)
+{
+    Actor::OnUpdate(deltaTime);
+
+    RenderManager *renderer = Game::GetInstance().GetRenderer();
+    // 绑定FBO
+    glBindFramebuffer(GL_FRAMEBUFFER, m_fbo);
+    // 清屏
+    glClear(GL_COLOR_BUFFER_BIT);
+    // 保存原始的正交矩阵 设置纹理对应的正交矩阵 和 视口
+    Oom = renderer->GetOrthoMatrix();
+    renderer->SetOrthoMatrix(glm::ortho(0.0f, (float)m_size.width, 0.0f, (float)m_size.height, -1.0f, 1.0f));
+    Oviewport = renderer->GetViewport();
+    renderer->SetViewport({0, 0, m_size.width, m_size.height});
+    // 以上步骤将渲染目标调整至AniMap的纹理上
+
+    SDL_Rect buf;
+    buf.x = 0;
+    buf.y = 0;
+    buf.w = m_size.width;
+    buf.h = m_size.height;
+    glm::vec4 red = {0.0f, 0.0f, 1.0f, 0.4f}; // RGBA：红色，不透明基础色
+    Game::GetInstance().GetRenderer()->DrawRect(&buf, red);
+
+    auto &ac = this->GetAllChildren();
+    RefPtr<Node> child = ac.GetFirst();
+    while (child)
+    {
+        child->Render();
+        child = child->GetNext();
+    }
+
+    // 渲染完毕后，将渲染目标恢复为默认
+    // 解绑FBO
+    glBindFramebuffer(GL_FRAMEBUFFER, 0);
+    // 恢复原始的正交矩阵 和 视口
+    renderer->SetOrthoMatrix(Oom);
+    renderer->SetViewport(Oviewport);
+
+    Actor::OnUpdate(deltaTime);
+}
+
+// void AnimationMap::SetVisible(bool visible)
+// {
+//     if (this->IsVisible() == visible)
+//         return;
+//     Actor::SetVisible(visible);
+//     auto ac = this->GetAllChildren();
+//     RefPtr<Node> next;
+//     for (RefPtr<Node> child = ac.GetFirst(); child; child = next)
+//     {
+//         next = child->GetNext();
+//         child->SetVisible(visible);
+//     }
+// }
+
+AnimationMap::AnimationMap()
+{
+}