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/****************************************************************************
**
** Copyright (C) 2008-2012 NVIDIA Corporation.
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#pragma once
#ifndef QT3DS_RENDER_WIDGETS_H
#define QT3DS_RENDER_WIDGETS_H
#include "Qt3DSRender.h"
#include "foundation/Qt3DSOption.h"
#include "foundation/Qt3DSMat44.h"
#include "foundation/Qt3DSMat33.h"
#include "foundation/Qt3DSBounds3.h"
#include "foundation/Qt3DSVec3.h"
#include "EASTL/utility.h"
#include "foundation/Qt3DSDataRef.h"
#include "render/Qt3DSRenderVertexBuffer.h"
#include "render/Qt3DSRenderIndexBuffer.h"
#include "Qt3DSRenderText.h"
namespace qt3ds {
namespace render {
struct SWidgetRenderInformation
{
// Just the rotation component of the nodeparenttocamera.
QT3DSMat33 m_NormalMatrix;
// The node parent's global transform multiplied by the inverse camera global transfrom;
// basically the MV from model-view-projection
QT3DSMat44 m_NodeParentToCamera;
// Projection that accounts for layer scaling
QT3DSMat44 m_LayerProjection;
// Pure camera projection without layer scaling
QT3DSMat44 m_PureProjection;
// A look at matrix that will rotate objects facing directly up
// the Z axis such that the point to the camera.
QT3DSMat33 m_LookAtMatrix;
// Conversion from world to camera position so world points not in object
// local space can be converted to camera space without going through the node's
// inverse global transform
QT3DSMat44 m_CameraGlobalInverse;
// Offset to add to the node's world position in camera space to move to the ideal camera
// location so that scale will work. This offset should be added *after* translation into
// camera space
QT3DSVec3 m_WorldPosOffset;
// Position in camera space to center the widget around
QT3DSVec3 m_Position;
// Scale factor to scale the widget by.
QT3DSF32 m_Scale;
// The camera used to render this object.
SCamera *m_Camera;
SWidgetRenderInformation(const QT3DSMat33 &inNormal, const QT3DSMat44 &inNodeParentToCamera,
const QT3DSMat44 &inLayerProjection, const QT3DSMat44 &inProjection,
const QT3DSMat33 &inLookAt, const QT3DSMat44 &inCameraGlobalInverse,
const QT3DSVec3 &inWorldPosOffset, const QT3DSVec3 &inPos, QT3DSF32 inScale,
SCamera &inCamera)
: m_NormalMatrix(inNormal)
, m_NodeParentToCamera(inNodeParentToCamera)
, m_LayerProjection(inLayerProjection)
, m_PureProjection(inProjection)
, m_LookAtMatrix(inLookAt)
, m_CameraGlobalInverse(inCameraGlobalInverse)
, m_WorldPosOffset(inWorldPosOffset)
, m_Position(inPos)
, m_Scale(inScale)
, m_Camera(&inCamera)
{
}
SWidgetRenderInformation()
: m_Camera(NULL)
{
}
};
typedef eastl::pair<SShaderVertexCodeGenerator &, SShaderFragmentCodeGenerator &>
TShaderGeneratorPair;
struct RenderWidgetModes
{
enum Enum {
Local,
Global,
};
};
// Context used to get render data for the widget.
class IRenderWidgetContext
{
protected:
virtual ~IRenderWidgetContext() {}
public:
virtual NVRenderVertexBuffer &
GetOrCreateVertexBuffer(CRegisteredString &inStr, QT3DSU32 stride,
NVConstDataRef<QT3DSU8> bufferData = NVConstDataRef<QT3DSU8>()) = 0;
virtual NVRenderIndexBuffer &
GetOrCreateIndexBuffer(CRegisteredString &inStr,
qt3ds::render::NVRenderComponentTypes::Enum componentType, size_t size,
NVConstDataRef<QT3DSU8> bufferData = NVConstDataRef<QT3DSU8>()) = 0;
virtual NVRenderAttribLayout &
CreateAttributeLayout(NVConstDataRef<qt3ds::render::NVRenderVertexBufferEntry> attribs) = 0;
virtual NVRenderInputAssembler &
GetOrCreateInputAssembler(CRegisteredString &inStr, NVRenderAttribLayout *attribLayout,
NVConstDataRef<NVRenderVertexBuffer *> buffers,
const NVRenderIndexBuffer *indexBuffer,
NVConstDataRef<QT3DSU32> strides, NVConstDataRef<QT3DSU32> offsets) = 0;
virtual NVRenderVertexBuffer *GetVertexBuffer(CRegisteredString &inStr) = 0;
virtual NVRenderIndexBuffer *GetIndexBuffer(CRegisteredString &inStr) = 0;
virtual NVRenderInputAssembler *GetInputAssembler(CRegisteredString &inStr) = 0;
virtual NVRenderShaderProgram *GetShader(CRegisteredString inStr) = 0;
virtual IShaderProgramGenerator &GetProgramGenerator() = 0;
// calls compile on the program generator and stores result under this name.
virtual NVRenderShaderProgram *CompileAndStoreShader(CRegisteredString inStr) = 0;
virtual STextDimensions MeasureText(const STextRenderInfo &inText) = 0;
// Render text using a specific MVP
virtual void RenderText(const STextRenderInfo &inText, const QT3DSVec3 &inTextColor,
const QT3DSVec3 &inBackgroundColor, const QT3DSMat44 &inMVP) = 0;
// Given a node and a point in the node's local space (most likely its pivot point), we
// return
// a normal matrix so you can get the axis out, a transformation from node to camera
// a new position and a floating point scale factor so you can render in 1/2 perspective
// mode
// or orthographic mode if you would like to.
virtual SWidgetRenderInformation
GetWidgetRenderInformation(SNode &inNode, const QT3DSVec3 &inPos,
RenderWidgetModes::Enum inWidgetMode) = 0;
};
class IRenderWidget
{
protected:
virtual ~IRenderWidget() {}
SNode *m_Node;
public:
IRenderWidget(SNode &inNode)
: m_Node(&inNode)
{
}
IRenderWidget()
: m_Node(NULL)
{
}
virtual void Render(IRenderWidgetContext &inWidgetContext,
NVRenderContext &inRenderContext) = 0;
SNode &GetNode() { return *m_Node; }
// Pure widgets.
static IRenderWidget &CreateBoundingBoxWidget(SNode &inNode, const NVBounds3 &inBounds,
const QT3DSVec3 &inColor,
NVAllocatorCallback &inAlloc);
static IRenderWidget &CreateAxisWidget(SNode &inNode, NVAllocatorCallback &inAlloc);
};
}
}
#endif
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