DX built-in function for drawing geometry

There are several ready-made functions in D3DX to draw common 3D models

D3dxcreatebox

D3dxcreatesphere

D3dxcreatecylinder//Cylinder

D3dxcreateteapot

D3dxcreatepolygon

D3dxcreatetorus//Torus, similar to donut

These functions have the same three parameters, respectively, which are

1. First parameter lpdirect3ddevice9 pdevice//This is the device used to draw

2. Second-to-last parameter Lpd3dxmesh * Ppmesh//used to store the created mesh

3. Last parameter lpd3dxbuffer * ppadjacency//used to optimize mesh, we set it here to null

Other parameters are related to the specific model, such as box to specify the size, sphere to specify the radius and so on.

Let's take d3dxcreatesphere as an example to explain the general steps of using these functions

Prototype

HRESULT D3dxcreatesphere (

Lpdirect3ddevice9 pdevice,

FLOAT Radius,

UINT Slices,

UINT Stacks,

Lpd3dxmesh * Ppmesh,

Lpd3dxbuffer * ppadjacency

);