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/****************************************************************************
**
** Copyright (C) 2006 NVIDIA Corporation.
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** 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 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "Qt3DSCommonPrecompile.h"
#include "StudioWidgetImpl.h"
#include "foundation/Qt3DSAtomic.h"
#include "render/Qt3DSRenderContext.h"
#include "Qt3DSRenderShaderCodeGenerator.h"
#include "Qt3DSRenderNode.h"
#include "render/Qt3DSRenderShaderProgram.h"
#include "StudioUtils.h"
#include "StudioPreferences.h"
using namespace qt3ds::widgets;
namespace {
struct STranslationWidget : public SStudioWidgetImpl<StudioWidgetTypes::Translation>
{
typedef SStudioWidgetImpl<StudioWidgetTypes::Translation> TBase;
NVRenderInputAssembler *m_XAxis;
NVRenderInputAssembler *m_YAxis;
NVRenderInputAssembler *m_ZAxis;
NVRenderInputAssembler *m_wideXAxis;
NVRenderInputAssembler *m_wideYAxis;
NVRenderInputAssembler *m_wideZAxis;
NVRenderInputAssembler *m_XPlane;
NVRenderInputAssembler *m_YPlane;
NVRenderInputAssembler *m_ZPlane;
volatile QT3DSI32 mRefCount;
STranslationWidget(NVAllocatorCallback &inAlloc)
: TBase(inAlloc)
, m_XAxis(nullptr)
, m_YAxis(nullptr)
, m_ZAxis(nullptr)
, m_wideXAxis(nullptr)
, m_wideYAxis(nullptr)
, m_wideZAxis(nullptr)
, m_XPlane(nullptr)
, m_YPlane(nullptr)
, m_ZPlane(nullptr)
, mRefCount(0)
{
}
QT3DS_IMPLEMENT_REF_COUNT_ADDREF_RELEASE(m_Allocator);
void Render(IRenderWidgetContext &inWidgetContext, NVRenderContext &inRenderContext) override
{
// Widgets have to clear the depth buffer; they shouldn't interact with other components
// but they should self-occlude.
inRenderContext.SetDepthWriteEnabled(true);
inRenderContext.Clear(qt3ds::render::NVRenderClearValues::Depth);
inRenderContext.SetDepthTestEnabled(true);
if (m_XAxis == nullptr) {
TBase::SetupRender(inWidgetContext, inRenderContext);
float pixelRatio = float(StudioUtils::devicePixelRatio());
QT3DSF32 axisWidth = pixelRatio;
QT3DSF32 triWidth = 4 * CStudioPreferences::selectorLineWidth() * pixelRatio;
QT3DSF32 axisStart = CStudioPreferences::selectorLineLength() / 3.0f * pixelRatio;
QT3DSF32 axisLength = CStudioPreferences::selectorLineLength() * pixelRatio;
QT3DSF32 triLength = axisStart;
m_XAxis = CreateAxis(m_Allocator, inWidgetContext, inRenderContext, QT3DSVec3(1, 0, 0),
axisStart, axisLength, triLength, axisWidth, triWidth,
"TranslationWidgetXAxis");
m_YAxis = CreateAxis(m_Allocator, inWidgetContext, inRenderContext, QT3DSVec3(0, 1, 0),
axisStart, axisLength, triLength, axisWidth, triWidth,
"TranslationWidgetYAxis");
m_ZAxis = CreateAxis(m_Allocator, inWidgetContext, inRenderContext, QT3DSVec3(0, 0, -1),
axisStart, axisLength, triLength, axisWidth, triWidth,
"TranslationWidgetZAxis");
QT3DSF32 axisPos = GetDiscPos() * pixelRatio;
QT3DSF32 axisDiscRadius = GetDiscRadius() * pixelRatio;
QT3DSF32 axisRingRadius = GetDiscRingRadius() * pixelRatio;
m_XPlane =
CreateRingedDisc(m_Allocator, inWidgetContext, inRenderContext, QT3DSVec3(1, 0, 0),
QT3DSVec3(0, axisPos, -axisPos), axisDiscRadius, axisRingRadius,
0.0f, 1.0f, "TranslationWidgetXPlane");
m_YPlane =
CreateRingedDisc(m_Allocator, inWidgetContext, inRenderContext, QT3DSVec3(0, 1, 0),
QT3DSVec3(axisPos, 0, -axisPos), axisDiscRadius, axisRingRadius,
0.0f, 1.0f, "TranslationWidgetYPlane");
m_ZPlane =
CreateRingedDisc(m_Allocator, inWidgetContext, inRenderContext, QT3DSVec3(0, 0, -1),
QT3DSVec3(axisPos, axisPos, 0), axisDiscRadius, axisRingRadius,
0.0f, 1.0f, "TranslationWidgetZPlane");
}
QT3DSMat44 theMVP;
if (m_isAxisHelper) {
auto helpWidgetInfo
= inWidgetContext.GetWidgetRenderInformation(*m_Node,
QT3DSVec3(0, 0, 0),
RenderWidgetModes::Global);
auto viewport = inRenderContext.GetViewport();
SCamera theTempCamera;
QT3DSMat44 theViewProjection;
theTempCamera.m_Flags.SetOrthographic(true);
// Move the camera back far enough that we can see everything
static QT3DSF32 theCameraSetback(600);
// Move the camera to position axis helper to the lower left.
theTempCamera.m_Position.z = -theCameraSetback;
theTempCamera.m_Position.x = 0;
theTempCamera.m_Position.y = 0;
theTempCamera.m_ClipFar = 2.0f * theCameraSetback;
// Use entire viewport
theTempCamera.CalculateGlobalVariables(
viewport,
QT3DSVec2((QT3DSF32)viewport.m_Width, (QT3DSF32)viewport.m_Height));
theTempCamera.CalculateViewProjectionMatrix(theViewProjection);
// Get the rotation for the scene view camera (the actual direction of world axes)
// and rotate the widget axes to match world axes. Scale the widget to be smaller
// and less intrusive than actual translation widget.
auto rot = QT3DSMat44::createIdentity();
if (helpWidgetInfo.m_Camera->m_Flags.IsOrthographic()) {
rot = helpWidgetInfo.m_Camera->m_LocalTransform;
rot.setPosition({0, 0, 0});
rot = rot.getInverse().getTranspose();
} else {
helpWidgetInfo.m_Camera->CalculateRotationMatrix(rot);
}
helpWidgetInfo.m_Camera->FlipCoordinateSystem(rot);
// In the scale calculation 200.f = 120 / 0.6; 120 being the default width and 0.6
// being the default scale for the axis helper
const float scale = float(viewport.m_Width) / 200.f;
rot.scale(QT3DSVec4(scale, scale, scale, 1));
theMVP = theViewProjection * rot.getTranspose();
if (m_wideXAxis == nullptr) {
QT3DSF32 axisWidth = 6;
QT3DSF32 triWidth = axisWidth * 3;
QT3DSF32 axisStart = 0;
QT3DSF32 axisLength = axisWidth * 10;
QT3DSF32 triLength = axisWidth * 5;
m_wideXAxis = CreateAxis(m_Allocator, inWidgetContext, inRenderContext,
QT3DSVec3(1, 0, 0), axisStart, axisLength, triLength,
axisWidth, triWidth, "TranslationWidgetWideXAxis");
m_wideYAxis = CreateAxis(m_Allocator, inWidgetContext, inRenderContext,
QT3DSVec3(0, 1, 0), axisStart, axisLength, triLength,
axisWidth, triWidth, "TranslationWidgetWideYAxis");
m_wideZAxis = CreateAxis(m_Allocator, inWidgetContext, inRenderContext,
QT3DSVec3(0, 0, -1), axisStart, axisLength, triLength,
axisWidth, triWidth, "TranslationWidgetWideZAxis");
}
} else {
theMVP = TBase::SetupMVP(inWidgetContext);
}
if (isNodeBehindCamera())
return;
inRenderContext.SetBlendingEnabled(false);
inRenderContext.SetDepthTestEnabled(true);
inRenderContext.SetDepthWriteEnabled(true);
inRenderContext.SetCullingEnabled(false);
inRenderContext.SetActiveShader(m_Shader);
m_Shader->SetPropertyValue("model_view_projection", theMVP);
// temporary set color1 to white so we can hopefully see mistakes.
m_Shader->SetPropertyValue("color1", QT3DSVec3(1, 1, 1));
QT3DSVec3 theXColor(GetXAxisColor());
QT3DSVec3 theYColor(GetYAxisColor());
QT3DSVec3 theZColor(GetZAxisColor());
QT3DSVec3 theRingColor(QT3DSVec3(.8f, .8f, .8f));
if (!m_isAxisHelper) {
RenderSingleToneGeometry(StudioWidgetComponentIds::XAxis, theXColor, inRenderContext,
m_XAxis);
RenderSingleToneGeometry(StudioWidgetComponentIds::YAxis, theYColor, inRenderContext,
m_YAxis);
RenderSingleToneGeometry(StudioWidgetComponentIds::ZAxis, theZColor, inRenderContext,
m_ZAxis);
RenderTwoToneGeometry(StudioWidgetComponentIds::XPlane, theXColor, theRingColor,
inRenderContext, m_XPlane);
RenderTwoToneGeometry(StudioWidgetComponentIds::YPlane, theYColor, theRingColor,
inRenderContext, m_YPlane);
RenderTwoToneGeometry(StudioWidgetComponentIds::ZPlane, theZColor, theRingColor,
inRenderContext, m_ZPlane);
} else {
RenderSingleToneGeometry(StudioWidgetComponentIds::XAxis, theXColor, inRenderContext,
m_wideXAxis);
RenderSingleToneGeometry(StudioWidgetComponentIds::YAxis, theYColor, inRenderContext,
m_wideYAxis);
RenderSingleToneGeometry(StudioWidgetComponentIds::ZAxis, theZColor, inRenderContext,
m_wideZAxis);
}
m_Highlight = StudioWidgetComponentIds::NoId;
}
void RenderPick(const QT3DSMat44 &inProjPremult, NVRenderContext &inRenderContext,
QSize /*inWinDimensions*/) override
{
if (m_XAxis && m_PickShader) {
inRenderContext.SetDepthWriteEnabled(true);
inRenderContext.Clear(qt3ds::render::NVRenderClearValues::Depth);
inRenderContext.SetDepthTestEnabled(true);
inRenderContext.SetBlendingEnabled(false);
inRenderContext.SetDepthTestEnabled(true);
inRenderContext.SetDepthWriteEnabled(true);
inRenderContext.SetCullingEnabled(false);
inRenderContext.SetActiveShader(m_PickShader);
// The projection premultiplication step moves the viewport around till
// it is centered over the mouse and scales everything *post* rendering (to keep
// appropriate aspect).
QT3DSMat44 theMVP = inProjPremult * m_PureProjection * m_TranslationScale;
m_PickShader->SetPropertyValue("model_view_projection", theMVP);
RenderPickBuffer(StudioWidgetComponentIds::XAxis, m_XAxis, inRenderContext);
RenderPickBuffer(StudioWidgetComponentIds::YAxis, m_YAxis, inRenderContext);
RenderPickBuffer(StudioWidgetComponentIds::ZAxis, m_ZAxis, inRenderContext);
RenderPickBuffer(StudioWidgetComponentIds::XPlane, m_XPlane, inRenderContext);
RenderPickBuffer(StudioWidgetComponentIds::YPlane, m_YPlane, inRenderContext);
RenderPickBuffer(StudioWidgetComponentIds::ZPlane, m_ZPlane, inRenderContext);
}
}
void setAsAxisHelper(bool isAxisHelper) override
{
m_isAxisHelper = isAxisHelper;
}
};
}
IStudioWidget &IStudioWidget::CreateTranslationWidget(NVAllocatorCallback &inAlloc)
{
return *QT3DS_NEW(inAlloc, STranslationWidget)(inAlloc);
}
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