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// Copyright (C) 2023 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QSGCURVEFILLNODE_P_H
#define QSGCURVEFILLNODE_P_H
#include <QtGui/qbrush.h>
#include <QtQuick/qtquickexports.h>
#include <QtQuick/private/qsggradientcache_p.h>
#include <QtQuick/qsgnode.h>
#include "qsgcurveabstractnode_p.h"
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of a number of Qt sources files. This header file may change from
// version to version without notice, or even be removed.
//
// We mean it.
//
QT_BEGIN_NAMESPACE
class Q_QUICK_EXPORT QSGCurveFillNode : public QSGCurveAbstractNode
{
public:
QSGCurveFillNode();
void setColor(QColor col) override
{
if (m_color == col)
return;
m_color = col;
updateMaterial();
}
QColor color() const
{
return m_color;
}
void setStrokeColor(QColor col)
{
const bool hadStroke = hasStroke();
m_strokeColor = col;
if (hadStroke != hasStroke())
updateMaterial();
}
QColor strokeColor() const
{
return m_strokeColor;
}
void setStrokeWidth(float width)
{
const bool hadStroke = hasStroke();
m_strokeWidth = width;
if (hadStroke != hasStroke())
updateMaterial();
}
float strokeWidth() const
{
return m_strokeWidth;
}
void setFillGradient(const QSGGradientCache::GradientDesc &fillGradient)
{
m_fillGradient = fillGradient;
}
QSGGradientCache::GradientDesc fillGradient() const
{
return m_fillGradient;
}
void setGradientType(QGradient::Type type)
{
if (m_gradientType != type) {
m_gradientType = type;
updateMaterial();
}
}
QGradient::Type gradientType() const
{
return m_gradientType;
}
float debug() const
{
return m_debug;
}
void setDebug(float newDebug)
{
m_debug = newDebug;
}
bool hasStroke() const
{
return m_strokeWidth > 0.0f && m_strokeColor.alpha() > 0;
}
void appendTriangle(const std::array<QVector2D, 3> &v, // triangle vertices
const std::array<QVector2D, 3> &n, // vertex normals
std::function<QVector3D(QVector2D)> uvForPoint
)
{
QVector3D uv1 = uvForPoint(v[0]);
QVector3D uv2 = uvForPoint(v[1]);
QVector3D uv3 = uvForPoint(v[2]);
QVector2D duvdx = QVector2D(uvForPoint(v[0] + QVector2D(1, 0))) - QVector2D(uv1);
QVector2D duvdy = QVector2D(uvForPoint(v[0] + QVector2D(0, 1))) - QVector2D(uv1);
m_uncookedIndexes.append(m_uncookedVertexes.size());
m_uncookedVertexes.append( { v[0].x(), v[0].y(),
uv1.x(), uv1.y(), uv1.z(),
duvdx.x(), duvdx.y(),
duvdy.x(), duvdy.y(),
n[0].x(), n[0].y()
});
m_uncookedIndexes.append(m_uncookedVertexes.size());
m_uncookedVertexes.append( { v[1].x(), v[1].y(),
uv2.x(), uv2.y(), uv2.z(),
duvdx.x(), duvdx.y(),
duvdy.x(), duvdy.y(),
n[1].x(), n[1].y()
});
m_uncookedIndexes.append(m_uncookedVertexes.size());
m_uncookedVertexes.append( { v[2].x(), v[2].y(),
uv3.x(), uv3.y(), uv3.z(),
duvdx.x(), duvdx.y(),
duvdy.x(), duvdy.y(),
n[2].x(), n[2].y()
});
}
void appendTriangle(const QVector2D &v1,
const QVector2D &v2,
const QVector2D &v3,
const QVector3D &uv1,
const QVector3D &uv2,
const QVector3D &uv3,
const QVector2D &n1,
const QVector2D &n2,
const QVector2D &n3,
const QVector2D &duvdx,
const QVector2D &duvdy)
{
m_uncookedIndexes.append(m_uncookedVertexes.size());
m_uncookedVertexes.append( { v1.x(), v1.y(),
uv1.x(), uv1.y(), uv1.z(),
duvdx.x(), duvdx.y(),
duvdy.x(), duvdy.y(),
n1.x(), n1.y()
});
m_uncookedIndexes.append(m_uncookedVertexes.size());
m_uncookedVertexes.append( { v2.x(), v2.y(),
uv2.x(), uv2.y(), uv2.z(),
duvdx.x(), duvdx.y(),
duvdy.x(), duvdy.y(),
n2.x(), n2.y()
});
m_uncookedIndexes.append(m_uncookedVertexes.size());
m_uncookedVertexes.append( { v3.x(), v3.y(),
uv3.x(), uv3.y(), uv3.z(),
duvdx.x(), duvdx.y(),
duvdy.x(), duvdy.y(),
n3.x(), n3.y()
});
}
void appendTriangle(const QVector2D &v1,
const QVector2D &v2,
const QVector2D &v3,
std::function<QVector3D(QVector2D)> uvForPoint)
{
appendTriangle({v1, v2, v3}, {}, uvForPoint);
}
QVector<quint32> uncookedIndexes() const
{
return m_uncookedIndexes;
}
void cookGeometry() override;
void reserve(qsizetype size)
{
m_uncookedIndexes.reserve(size);
m_uncookedVertexes.reserve(size);
}
private:
struct CurveNodeVertex
{
float x, y, u, v, w;
float dudx, dvdx, dudy, dvdy; // Size of pixel in curve space (must be same for all vertices in triangle)
float nx, ny; // normal vector describing the direction to shift the vertex for AA
};
void updateMaterial();
static const QSGGeometry::AttributeSet &attributes();
QColor m_color = Qt::white;
QColor m_strokeColor = Qt::transparent;
float m_strokeWidth = 0.0f;
float m_debug = 0.0f;
QSGGradientCache::GradientDesc m_fillGradient;
QGradient::Type m_gradientType = QGradient::NoGradient;
QScopedPointer<QSGMaterial> m_material;
QVector<CurveNodeVertex> m_uncookedVertexes;
QVector<quint32> m_uncookedIndexes;
};
QT_END_NAMESPACE
#endif // QSGCURVEFILLNODE_P_H
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