Question

我在directx9下配置我的相机设置，我所获得的是能够查看180度，但我无法达到360.这是代码：

float x = 0;
float y = 0;
float z = 10;
float dx = 0;
float dy = 0;
void FreeMotion()
{
    if(::GetAsyncKeyState('W') )
    {
        z -= 0.3;
    }
    if(::GetAsyncKeyState('S') )
    {
        z += 0.3;
    }
    if(::GetAsyncKeyState('A') )
    {
        x += 0.7;
    }
    if(::GetAsyncKeyState('D') )
    {
        x -= 0.1;
    }
    if(::GetAsyncKeyState('R') )
    {
        y += 0.1;
    }
    if(::GetAsyncKeyState('F') )
    {
        y -= 0.1;
    }
    if(::GetAsyncKeyState(VK_RIGHT) )
    {
        dx -= 0.1;
    }
    if(::GetAsyncKeyState(VK_LEFT) )
    {
        dx += 0.1;
    }
    if(::GetAsyncKeyState(VK_UP) )
    {
        dy += 0.1;
    }
    if(::GetAsyncKeyState(VK_DOWN) )
    {
        dy -= 0.1;
    }
}
void render()
{

    d3ddev->Clear(0,NULL,D3DCLEAR_TARGET,D3DCOLOR_XRBG(0,0,0),1.0,0);
    d3ddev->BeginScene();
FreeMotion();
        D3DXMATRIX View;
        D3DXMatrixLookAtLH(&View,&D3DXVECTOR3(x,y,z),&D3DXVECTOR3(x+dx,y+dy,z-10),&D3DXVECTOR3(0,1,0));
        d3ddev->SetTransform(D3DTS_VIEW,&View);

...

所以这段代码让我有能力四处走动而不是向后看！有人可以告诉我如何让它看起来整整360度？

Answer 1

我认为将dx和dy解释为旋转角度更有意义。然后，您将计算视图目标：

target = (x, y, z) + (sin(dx) * cos(dy), sin(dy), -cos(dx) * cos(dy))

在D3DXMatrixLookAtLH来电中更新此计算，您应该获得360°。

Directx 9相机设置

1 个答案: