Picking

This lesson covers performing picking in 3D.

Setup

First create a new project using the instructions from the first two lessons: The basic game loop and Adding the DirectX Tool Kit which we will use for this lesson.

Ray casting

UNDER CONSTRUCTION

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;

Next lesson: Mixing SimpleMath and DirectXMath

Further reading

DirectMath Programmer's Guide
DirectXMath Collision sample