105 lines
2.2 KiB
C++
105 lines
2.2 KiB
C++
#include"VulkanAppFramework.h"
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#include"Gizmo.h"
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#include<hgl/graph/Ray.h>
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using namespace hgl;
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using namespace hgl::graph;
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/**
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* 求一个世界坐标在屏幕上的位置
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*/
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Vector2f WorldToScreen(const Vector3f &world_pos,const CameraInfo &ci,const ViewportInfo &vi)
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{
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Vector4f pos=ci.vp*Vector4f(world_pos,1);
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pos/=pos.w;
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return Vector2f((pos.x+1)*vi.GetViewportWidth()/2,(1-pos.y)*vi.GetViewportHeight()/2);
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}
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class TestApp:public SceneAppFramework
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{
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SceneNode root;
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StaticMesh *sm_move=nullptr;
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StaticMesh *sm_rotate=nullptr;
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Renderable *face_torus=nullptr;
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private:
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bool InitGizmo()
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{
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if(!InitGizmoResource(db))
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return(false);
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sm_move =GetGizmoMoveStaticMesh();
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sm_rotate =GetGizmoRotateStaticMesh();
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face_torus =GetGizmoRenderable(GizmoShape::Torus,GizmoColor::White);
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return(true);
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}
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public:
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bool Init(uint w,uint h)
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{
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if(!SceneAppFramework::Init(w,h))
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return(false);
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if(!InitGizmo())
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return(false);
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camera->pos=Vector3f(32,32,32);
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camera_control->SetTarget(Vector3f(0,0,0));
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return(true);
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}
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~TestApp()
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{
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FreeGizmoResource();
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}
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void BuildCommandBuffer(uint32 index) override
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{
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camera_control->Refresh();
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const CameraInfo &ci=camera_control->GetCameraInfo();
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const ViewportInfo &vi=GetViewportInfo();
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const float screen_height=vi.GetViewportHeight();
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root.Clear();
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const Vector3f GizmoPosition(0,0,0);
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const Vector4f pos=ci.Project(GizmoPosition);
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root.SetLocalMatrix(scale(pos.w*16.0f/screen_height));
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root.CreateSubNode(sm_move->GetScene());
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root.CreateSubNode(sm_rotate->GetScene());
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{
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Transform tm;
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tm.SetRotation(CalculateFacingRotationQuat(GizmoPosition,ci.view,AxisVector::X));
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tm.SetScale(15);
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root.CreateSubNode(tm,face_torus);
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}
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root.RefreshMatrix();
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render_list->Expend(&root);
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SceneAppFramework::BuildCommandBuffer(index);
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}
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};//class TestApp:public SceneAppFramework
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int main(int,char **)
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{
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return RunApp<TestApp>(1024,1024);
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}
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