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// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#ifndef TRIVISWIDGET_H
#define TRIVISWIDGET_H
#include <QWidget>
#include <QComboBox>
#include <QRadioButton>
#include <QLabel>
#include <QSpinBox>
#include <QCheckBox>
#include <QScrollArea>
class TriVisCanvas : public QWidget
{
Q_OBJECT
public:
TriVisCanvas(QWidget *parent = nullptr);
QStringList shapes() const;
enum Type {
Stroke,
Fill
};
void setType(Type t) { m_type = t; }
void setIndex(int idx) { m_idx = idx; }
void setStrokeWidth(float w) { m_strokeWidth = w; }
void setDashStroke(bool d) { m_dashStroke = d; }
void setStepLimits(int strokeLimit, int fillLimit) {
m_strokeStepLimit = strokeLimit;
m_fillStepLimit = fillLimit;
update();
}
enum GeomType {
Triangles,
TriangleStrips
};
QImage preview() const;
GeomType geomType() const { return m_type == Stroke ? TriangleStrips : Triangles; }
int vertexCount() const { return m_type == Stroke ? m_strokeVertices.count() : m_fillVertices.count(); }
int indexCount() const { return m_type == Stroke ? 0 : m_fillIndices.count(); }
float zoomLevel() const { return m_zoom; }
void retriangulate();
void regeneratePreviews();
protected:
void paintEvent(QPaintEvent *event) override;
void wheelEvent(QWheelEvent *event) override;
signals:
void retriangulated();
void zoomChanged(float oldZoom, float newZoom);
private:
void addPreview(int idx);
Type m_type = Stroke;
int m_idx = 0;
float m_strokeWidth = 1;
bool m_dashStroke = false;
QList<QPainterPath> m_paths;
QList<QImage> m_strokePreviews;
QList<QImage> m_fillPreviews;
struct Vertex {
float x, y;
void set(float vx, float vy) { x = vx; y = vy; }
};
QList<Vertex> m_fillVertices;
QList<quint32> m_fillIndices;
QList<Vertex> m_strokeVertices;
float m_zoom = 1;
int m_fillStepLimit = 0;
int m_strokeStepLimit = 0;
};
class TriangulationVisualizer : public QWidget
{
Q_OBJECT
public:
TriangulationVisualizer(QWidget *parent = nullptr);
private:
void updateInfoLabel();
void updatePreviewLabel();
QComboBox *m_cbShape;
QLabel *m_lbPreview;
QRadioButton *m_rdStroke;
QRadioButton *m_rdFill;
QScrollArea *m_scrollArea;
TriVisCanvas *m_canvas;
QLabel *m_lbInfo;
QSpinBox *m_spStrokeWidth;
QCheckBox *m_chDash;
QCheckBox *m_chStepEnable;
QSpinBox *m_spStepStroke;
QSpinBox *m_spStepFill;
};
#endif
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