SIC Games

struct MeshStructureData {
Mesh's Vertices position, normals, uvs, etc...
};

struct MeshBase {
...
neccessary functions to initialize buffers (vertex and indices).
function to apply material.
function to detect collision.
function to render out buffers.
};

struct StaticMesh : public MeshBase {
function to load mesh file and store necessary information.
};

GetCursorPos(&MousePos);

ScreenToClient(DXWindow,&MousePos);

GetWindowRect(DXWindow,&DXWindowSize);
const XMVECTOR RayOrigion = camera.CameraPosition;
XMVECTOR Mouse2DSpace = XMVectorSet(MousePos.x,MousePos.y,0.0f,0.0f);
XMVECTOR Mouse3DSpace = XMVector3Unproject(Mouse2DSpace,0,0,m_screenWidth,m_screenHeight,0.0f,1.0f,camera.CameraProjectionMatrix,camera.CameraViewMatrix,XMMatrixIdentity());
RayDirection = Mouse3DSpace - RayOrigion;
RayDirection = XMVector3Normalize(RayDirection);
RayDirection = RayDirection * 100.0f;

XMVECTOR vEye;

XMVECTOR vDir;

XMStoreFloat3((XMFLOAT3*)&vEye,RayOrigion);

XMStoreFloat3((XMFLOAT3*)&vDir,RayDirection);

XMStoreFloat3(&MouseFloat3,RayDirection);

bool computeIntersection(XMFLOAT3 &p, XMFLOAT3 &target) {
        bool result;
        result = false;

        float iX = (target.x );
        float iY = (target.y );
        float iZ = (target.z );
       
        float iX1 = (target.x);
        float iY1 = (target.y);
        float iZ1 = (target.z);
        t = XMFLOAT3((iX - p.x) + (iX1 - p.x),(iY - p.y) + (iY - p.y), 1.0f);


       
       
       
        if(p.x > iX && p.y > iY) {
            result = true;

        }

       
       
        return result;

    }