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Страница: Picking
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3D shapes Adding audio to your project Adding the DirectX Tool Kit for Audio Adding the DirectX Tool Kit AlphaTestEffect AnimatedTexture Animating using model bones Audio AudioEmitter AudioEngine AudioListener Authoring an Effect Basic game math BasicEffect BasicPostProcess BufferHelpers Collision detection Color ComPtr CommonStates ControllerFont Creating and playing sounds Creating custom shaders with DGSL DDSTextureLoader DGSLEffect DebugDraw DebugEffect DeviceResources DirectXHelpers DirectXTK Drawing text DualPostProcess DualTextureEffect DynamicSoundEffectInstance EffectFactory Effects EnvironmentMapEffect Game Gallery Game controller input GamePad GeometricPrimitive Getting Started GraphicsMemory Home IEffect IEffectFog IEffectLights IEffectMatrices IEffectSkinning Implementation Keyboard Legacy XAudio 2.7 Notes Line drawing and anti aliasing MSAAHelper MakeSpriteFont Making use of wave banks Matrix Mixing SimpleMath and DirectXMath Model ModelBone ModelMesh ModelMeshPart More tricks with sprites Mouse and keyboard input Mouse Multistream rendering and instancing NormalMapEffect PBREffect Physically based rendering Picking Plane PostProcess PrimitiveBatch Quaternion Ray Rectangle RenderTexture Rendering a model Resources Samples ScreenGrab ScrollingBackground Simple rendering SimpleMath SkinnedEffect SoundEffect SoundEffectInstance SoundStreamInstance SpriteBatch SpriteFont SpriteSheet Sprites and textures StepTimer TextConsole The basic game loop ThrowIfFailed ToneMapPostProcess Using DeviceResources Using HDR rendering Using advanced shaders Using positional audio Using skinned models Using the SimpleMath library Utilities Vector2 Vector3 Vector4 VertexTypes Viewport WICTextureLoader Wave Formats WaveBank Writing custom shaders XWBTool XboxDDSTextureLoader
8 Picking
Chuck Walbourn редактировал(а) эту страницу 2022-04-26 16:45:12 -07:00
Содержание
Getting Started for DX11 Getting Started for DX12

This lesson covers performing picking in 3D.

Ray casting

You can find an older tutorial on 3D picking using ray/object tests at Rastertek that uses the deprecated D3DXMath library. Note that instead of a 'roll your own' RaySphereIntersect you can use BoundingSphere from DirectXCollision.h with the following method to do the ray-sphere test:

bool Intersects(FXMVECTOR Origin, FXMVECTOR Direction, float& Dist) const;

Also remember that the default view coordinates for DirectX Tool Kit is "right-handed" viewing coordinates and the Rastertek tutorials follow the older DirectX style of "left-handed" viewing coordinates. This requires reversing the Z direction of the ray.

You can also review the Direct3D 10 era "picking" sample from the legacy DirectX SDK.

Next lesson: Mixing SimpleMath and DirectXMath

Further reading

DirectMath Programmer's Guide
DirectXMath Collision sample for Win32, UWP, XDK, GDK

For Use

  • Universal Windows Platform apps
  • Windows desktop apps
  • Windows 11
  • Windows 10
  • Windows 8.1
  • Windows 7 Service Pack 1
  • Xbox One

Architecture

  • x86
  • x64
  • ARM64

For Development

  • Visual Studio 2022
  • Visual Studio 2019 (16.11)
  • clang/LLVM v12 - v18
  • MinGW 12.2, 13.2
  • CMake 3.20

Related Projects

DirectX Tool Kit for DirectX 12

DirectXMesh

DirectXTex

DirectXMath

Win2D

Tools

Test Suite

Model Viewer

Content Exporter

DxCapsViewer

All content and source code for this package are subject to the terms of the MIT License.

This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact opencode@microsoft.com with any additional questions or comments.