author | Stefan Karlsson <stefan.karlsson@nokia.com> |
Sun, 28 Mar 2010 16:37:04 +0100 | |
branch | CompilerCompatibility |
changeset 11 | 7e31c909d88d |
parent 0 | 2f259fa3e83a |
child 10 | 9f56a4e1b8ab |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: |
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* |
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*/ |
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|
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#ifndef HGVHELPER_H_ |
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#define HGVHELPER_H_ |
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|
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// INCLUDES |
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#include <e32base.h> |
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#include <e32std.h> |
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#include <gdi.h> |
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#include <VG/openvg.h> |
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|
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// FORWARD DECLARATIONS |
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class CFbsBitmap; |
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class CHgVgEGL; |
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class CGulIcon; |
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#define RGBA(r, g, b, a) ((VGuint) (((r) << 24) | ((g) << 16) | ((b) << 8) | (a))) |
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|
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/** |
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* Helper classes and methods for CHgVg* classes. |
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*/ |
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namespace HgVgHelper |
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{ |
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/**-------------------------------------------------------------- |
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* Vertex and Matrix manipulations helper classes |
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--------------------------------------------------------------*/ |
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// Forward declarations |
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class TMatrix; |
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class TVertex; |
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/** |
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* 3D Vertex class |
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*/ |
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class TVertex |
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{ |
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public: |
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// model coordinates |
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VGfloat iX, iY, iZ; |
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// transformed mode-view-coordinates |
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VGfloat iTx, iTy, iTz; |
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// projected screen coordinates |
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VGfloat iScreenX; |
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VGfloat iScreenY; |
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/** |
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* Projects model-view-coordinates to screen space coordinates. |
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* |
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* @param aScreenWidth width of the rendering window |
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* @param aScreenHeight height of the rendering window |
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* @param aFov field of view to use |
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*/ |
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void ProjectPoint(VGfloat aScreenWidth, VGfloat aScreenHeight, VGfloat aFov); |
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/** |
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* Transform model coordinates by matrix given and sets |
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* result to tranformed model-view-coordinates. |
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* |
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* @param aMatrix model-view-transformation matrix. |
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*/ |
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void TransformPoint(const TMatrix& aMatrix); |
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}; |
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/** |
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* 4x4 Matrix class |
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*/ |
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class TMatrix |
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{ |
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public: |
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// matrix data |
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VGfloat iM[4][4]; |
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// Construction and destruction. |
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TMatrix(); |
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TMatrix(const TMatrix& rhs); |
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~TMatrix(); |
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// Operators |
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TMatrix& operator=(const TMatrix& rhs); |
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/** |
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* Makes this matrix identity matrix. |
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*/ |
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void Identity(); |
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/** |
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* Multiplies this matrix by rhs matrix. |
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* |
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* @param rhs Right hand side matrix. |
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*/ |
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void Multiply(const TMatrix& rhs); |
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|
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111 |
/** |
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* Sets this matrix to rotation matrix around X-axis. |
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* |
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* @param aAngle angle in radians. |
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*/ |
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void RotationX(VGfloat aAngle); |
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|
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/** |
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* Sets this matrix to rotation matrix around Y-axis. |
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* |
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* @param aAngle angle in radians. |
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*/ |
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void RotationY(VGfloat aAngle); |
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|
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/** |
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* Sets this matrix to rotation matrix around Z-axis. |
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* |
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* @param aAngle angle in radians. |
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*/ |
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void RotationZ(VGfloat aAngle); |
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|
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132 |
/** |
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* Sets this matrix to scale matrix. |
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* |
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* @param aSx scaling on X-axis |
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* @param aSy scaling on Y-axis |
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* @param aSz scaling on Z-axis |
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*/ |
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void Scale(VGfloat aSx, VGfloat aSy, VGfloat aSz); |
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|
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141 |
/** |
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* Sets this matrix to translation matrix. |
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* |
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* @param aTx translation on X-axis. |
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* @param aTy translation on Y-axis. |
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* @param aTz translation on Z-axis. |
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*/ |
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void Translation(VGfloat aTx, VGfloat aTy, VGfloat aTz); |
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}; |
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150 |
|
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151 |
/**-------------------------------------------------------------- |
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152 |
* IMAGE HANDLING ROUTINES |
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--------------------------------------------------------------*/ |
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154 |
|
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155 |
/** |
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* Creates VGImage from CGuiIcon. |
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* May leave for example if runs out of video memory. |
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* |
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* @param aIcon valid CGuiIcon-object. |
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* @return VGImage-object. |
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*/ |
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VGImage CreateVgImageFromIconL( const CGulIcon& aIcon ); |
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|
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|
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/**-------------------------------------------------------------- |
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* Misc. Helpers. |
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--------------------------------------------------------------*/ |
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|
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/** |
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* Clamps value between lower and upper limits. |
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* |
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* @param aValue value. |
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* @param aUpper upper limit. |
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* @param aLower lower limit. |
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* @return clamped value. |
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*/ |
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VGfloat Clamp(VGfloat aValue, VGfloat aUpper, VGfloat aLower); |
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|
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/** |
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* Linearly interpolates value between start and end. |
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* |
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* @param aStart starting value. |
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* @param aEnd ending value. |
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* @param aT t value between 0.0f - 1.0f. |
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*/ |
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VGfloat Lerp(VGfloat aStart, VGfloat aEnd, VGfloat aT); |
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|
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/** |
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* Gets values absolute. |
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* |
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* @param aValue value. |
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* @return absolute of the value. |
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*/ |
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VGfloat Abs(VGfloat aValue); |
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|
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|
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/** |
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* Calculates bounding rect from points. |
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* |
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* @param aRect destination rect-object, rectangle in symbian screen coordinates. |
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* @param aPoints source points in vg coordinates (x, y, x, y...). |
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* @param aNumPoints number of points in aPoints. |
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*/ |
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void CalculateBoundingRect(TRect& aRect, VGfloat* aPoints, TInt aNumPoints, |
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const TRect& aWindowRect); |
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|
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|
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/** |
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* Draws vg image to current vg surface. |
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* NOTE: Assumes that the image is in vg coordinates. |
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* |
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* @param aImage image to draw. |
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* @param aPos position where to draw (in symbian screen coordinates). |
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* @param aWindowRect drawing windows rectangle. |
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*/ |
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void DrawImage(VGImage aImage, const TPoint& aPos, const TRect& aWindowRect, TBool aCentered = EFalse); |
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/** |
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* Draws vg image to current vg surface multiplying its colors by a color. |
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* NOTE: Assumes that the image is in vg coordinates. |
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* |
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* @param aImage image to draw. |
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* @param aColor color which is multiplied with image colors. |
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* @param aPos position where the image is drawn (in sumbian screen coordinates) |
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* @param aWindowRect drawing windows renctangle. |
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*/ |
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void DrawImageColorized(VGImage aImage, const TRgb& aColor, |
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const TPoint& aPos, const TRect& aWindowRect, TBool aCentered = EFalse); |
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/** |
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* Wrapper for creating paths. |
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* |
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* @param aNumSegment |
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* @param aSegments |
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* @param aPoints |
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*/ |
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VGPath CreatePath(VGuint aNumSegments, const VGubyte* aSegments, const VGfloat* aPoints); |
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/** |
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* Wrapper for creating single color paints. |
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* |
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* @param aColor |
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*/ |
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VGPaint CreateColorPaint(const TRgb& aColor); |
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/** |
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* Wrapper for creating single color paints. |
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* |
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* @param aColor |
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*/ |
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VGPaint CreateColorPaint(const VGfloat* aColor); |
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} |
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#endif /* HGVGHELPER */ |