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//-----------------------------------------------------------------------------
// File: D3DUtil.h
//
// Desc: Helper functions and typing shortcuts for Direct3D programming.
//
// Copyright (c) Microsoft Corporation. All rights reserved
//-----------------------------------------------------------------------------
ifndef D3DUTIL_H
define D3DUTIL_H
include <D3D9.h>
include <D3DX9Math.h>
//-----------------------------------------------------------------------------
// Name: D3DUtil_InitMaterial()
// Desc: Initializes a D3DMATERIAL9 structure, setting the diffuse and ambient
// colors. It does not set emissive or specular colors.
//-----------------------------------------------------------------------------
VOID D3DUtil_InitMaterial( D3DMATERIAL9& mtrl, FLOAT r=0.0f, FLOAT g=0.0f,
FLOAT b=0.0f, FLOAT a=1.0f );
//-----------------------------------------------------------------------------
// Name: D3DUtil_InitLight()
// Desc: Initializes a D3DLIGHT structure, setting the light position. The
// diffuse color is set to white, specular and ambient left as black.
//-----------------------------------------------------------------------------
VOID D3DUtil_InitLight( D3DLIGHT9& light, D3DLIGHTTYPE ltType,
FLOAT x=0.0f, FLOAT y=0.0f, FLOAT z=0.0f );
//-----------------------------------------------------------------------------
// Name: D3DUtil_CreateTexture()
// Desc: Helper function to create a texture. It checks the root path first,
// then tries the DXSDK media path (as specified in the system registry).
//-----------------------------------------------------------------------------
HRESULT D3DUtil_CreateTexture( LPDIRECT3DDEVICE9 pd3dDevice, TCHAR* strTexture,
LPDIRECT3DTEXTURE9* ppTexture,
D3DFORMAT d3dFormat = D3DFMT_UNKNOWN );
//-----------------------------------------------------------------------------
// Name: D3DUtil_GetCubeMapViewMatrix()
// Desc: Returns a view matrix for rendering to a face of a cubemap.
//-----------------------------------------------------------------------------
D3DXMATRIX D3DUtil_GetCubeMapViewMatrix( DWORD dwFace );
//-----------------------------------------------------------------------------
// Name: D3DUtil_GetRotationFromCursor()
// Desc: Returns a quaternion for the rotation implied by the window's cursor
// position.
//-----------------------------------------------------------------------------
D3DXQUATERNION D3DUtil_GetRotationFromCursor( HWND hWnd,
FLOAT fTrackBallRadius=1.0f );
//-----------------------------------------------------------------------------
// Name: D3DUtil_SetDeviceCursor
// Desc: Builds and sets a cursor for the D3D device based on hCursor.
//-----------------------------------------------------------------------------
HRESULT D3DUtil_SetDeviceCursor( LPDIRECT3DDEVICE9 pd3dDevice, HCURSOR hCursor,
BOOL bAddWatermark );
//-----------------------------------------------------------------------------
// Name: D3DUtil_D3DFormatToString
// Desc: Returns the string for the given D3DFORMAT.
// bWithPrefix determines whether the string should include the "D3DFMT_"
//-----------------------------------------------------------------------------
TCHAR* D3DUtil_D3DFormatToString( D3DFORMAT format, bool bWithPrefix = true );
//-----------------------------------------------------------------------------
// Name: class CD3DArcBall
// Desc:
//-----------------------------------------------------------------------------
<h4 align=right text=red> CD3DArcBall</h4><hr>
class CD3DArcBall
{
INT m_iWidth; // ArcBall's window width
INT m_iHeight; // ArcBall's window height
FLOAT m_fRadius; // ArcBall's radius in screen coords
FLOAT m_fRadiusTranslation; // ArcBall's radius for translating the target
D3DXQUATERNION m_qDown; // Quaternion before button down
D3DXQUATERNION m_qNow; // Composite quaternion for current drag
D3DXMATRIXA16 m_matRotation; // Matrix for arcball's orientation
D3DXMATRIXA16 m_matRotationDelta; // Matrix for arcball's orientation
D3DXMATRIXA16 m_matTranslation; // Matrix for arcball's position
D3DXMATRIXA16 m_matTranslationDelta; // Matrix for arcball's position
BOOL m_bDrag; // Whether user is dragging arcball
BOOL m_bRightHanded; // Whether to use RH coordinate system
D3DXVECTOR3 ScreenToVector( int sx, int sy );
public:
LRESULT HandleMouseMessages( HWND, UINT, WPARAM, LPARAM );
D3DXMATRIX* GetRotationMatrix() { return &m_matRotation; }
D3DXMATRIX* GetRotationDeltaMatrix() { return &m_matRotationDelta; }
D3DXMATRIX* GetTranslationMatrix() { return &m_matTranslation; }
D3DXMATRIX* GetTranslationDeltaMatrix() { return &m_matTranslationDelta; }
BOOL IsBeingDragged() { return m_bDrag; }
VOID SetRadius( FLOAT fRadius );
VOID SetWindow( INT w, INT h, FLOAT r=0.9 );
VOID SetRightHanded( BOOL bRightHanded ) { m_bRightHanded = bRightHanded; }
CD3DArcBall();
VOID Init();
};<hr>
//-----------------------------------------------------------------------------
// Name: class CD3DCamera
// Desc:
//-----------------------------------------------------------------------------
<hr>
CD3DCamera</h4>
class CD3DCamera
{
D3DXVECTOR3 m_vEyePt; // Attributes for view matrix
D3DXVECTOR3 m_vLookatPt;
D3DXVECTOR3 m_vUpVec;
D3DXVECTOR3 m_vView;
D3DXVECTOR3 m_vCross;
D3DXMATRIXA16 m_matView;
D3DXMATRIXA16 m_matBillboard; // Special matrix for billboarding effects
FLOAT m_fFOV; // Attributes for projection matrix
FLOAT m_fAspect;
FLOAT m_fNearPlane;
FLOAT m_fFarPlane;
D3DXMATRIXA16 m_matProj;
public:
// Access functions
D3DXVECTOR3 GetEyePt() { return m_vEyePt; }
D3DXVECTOR3 GetLookatPt() { return m_vLookatPt; }
D3DXVECTOR3 GetUpVec() { return m_vUpVec; }
D3DXVECTOR3 GetViewDir() { return m_vView; }
D3DXVECTOR3 GetCross() { return m_vCross; }
FLOAT GetFOV() { return m_fFOV; }
FLOAT GetAspect() { return m_fAspect; }
FLOAT GetNearPlane() { return m_fNearPlane; }
FLOAT GetFarPlane() { return m_fFarPlane; }
D3DXMATRIX GetViewMatrix() { return m_matView; }
D3DXMATRIX GetBillboardMatrix() { return m_matBillboard; }
D3DXMATRIX GetProjMatrix() { return m_matProj; }
VOID SetViewParams( D3DXVECTOR3 &vEyePt, D3DXVECTOR3& vLookatPt,
D3DXVECTOR3& vUpVec );
VOID SetProjParams( FLOAT fFOV, FLOAT fAspect, FLOAT fNearPlane,
FLOAT fFarPlane );
CD3DCamera();
};
endif // D3DUTIL_H
(C) Æliens
20/2/2008
You may not copy or print any of this material without explicit permission of the author or the publisher.
In case of other copyright issues, contact the author.
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