QHeightMapSurfaceDataProxy Class
Base proxy class for Q3DSurface. 更多...
| 头文件: | #include <QHeightMapSurfaceDataProxy> |
| 开始支持版本: | QtDataVisualization 1.0 |
| Instantiated By: | HeightMapSurfaceDataProxy |
| 基类: | QSurfaceDataProxy |
属性
|
- 3 个属性继承自 QSurfaceDataProxy
- 1 个属性继承自 QAbstractDataProxy
- 1 个属性继承自 QObject
公有函数
| QHeightMapSurfaceDataProxy(QObject *parent = Q_NULLPTR) | |
| QHeightMapSurfaceDataProxy(const QImage &image, QObject *parent = Q_NULLPTR) | |
| QHeightMapSurfaceDataProxy(const QString &filename, QObject *parent = Q_NULLPTR) | |
| virtual | ~QHeightMapSurfaceDataProxy() |
| QImage | heightMap() const |
| QString | heightMapFile() const |
| float | maxXValue() const |
| float | maxZValue() const |
| float | minXValue() const |
| float | minZValue() const |
| void | setHeightMap(const QImage &image) |
| void | setHeightMapFile(const QString &filename) |
| void | setMaxXValue(float max) |
| void | setMaxZValue(float max) |
| void | setMinXValue(float min) |
| void | setMinZValue(float min) |
| void | setValueRanges(float minX, float maxX, float minZ, float maxZ) |
- 16 个公有函数继承自 QSurfaceDataProxy
- 1 个公有函数继承自 QAbstractDataProxy
- 32 个公有函数继承自 QObject
信号
| void | heightMapChanged(const QImage &image) |
| void | heightMapFileChanged(const QString &filename) |
| void | maxXValueChanged(float value) |
| void | maxZValueChanged(float value) |
| void | minXValueChanged(float value) |
| void | minZValueChanged(float value) |
- 9 个信号继承自 QSurfaceDataProxy
- 2 个信号继承自 QObject
其他继承的成员
- 1 个公有槽函数继承自 QObject
- 1 个公有变量继承自 QObject
- 10 个静态公有成员继承自 QObject
- 9 个受保护的函数继承自 QObject
- 2 个受保护的变量继承自 QObject
详细描述
Base proxy class for Q3DSurface.
QHeightMapSurfaceDataProxy takes care of surface related height map data handling. It provides a way to give a height map to be visualized as a surface plot.
Since height maps do not contain values for X or Z axes, those values need to be given separately using minXValue, maxXValue, minZValue, and maxZValue properties. X-value corresponds to image horizontal direction and Z-value to the vertical. Setting any of these properties triggers asynchronous re-resolving of any existing height map.
参见 QSurfaceDataProxy and Qt Data Visualization Data Handling.
属性
heightMap : QImage
This property holds the height map image to be visualized.
访问函数:
| QImage | heightMap() const |
| void | setHeightMap(const QImage &image) |
Notifier signal:
| void | heightMapChanged(const QImage &image) |
heightMapFile : QString
This property holds the name of the file with a height map image to be visualized.
访问函数:
| QString | heightMapFile() const |
| void | setHeightMapFile(const QString &filename) |
Notifier signal:
| void | heightMapFileChanged(const QString &filename) |
maxXValue : float
This property holds the maximum X value for the generated surface points.
Defaults to 10.0.
When setting this property the corresponding minimum value is adjusted if necessary, to ensure that the range remains valid.
访问函数:
| float | maxXValue() const |
| void | setMaxXValue(float max) |
Notifier signal:
| void | maxXValueChanged(float value) |
maxZValue : float
This property holds the maximum Z value for the generated surface points.
Defaults to 10.0.
When setting this property the corresponding minimum value is adjusted if necessary, to ensure that the range remains valid.
访问函数:
| float | maxZValue() const |
| void | setMaxZValue(float max) |
Notifier signal:
| void | maxZValueChanged(float value) |
minXValue : float
This property holds the minimum X value for the generated surface points.
Defaults to 0.0.
When setting this property the corresponding maximum value is adjusted if necessary, to ensure that the range remains valid.
访问函数:
| float | minXValue() const |
| void | setMinXValue(float min) |
Notifier signal:
| void | minXValueChanged(float value) |
minZValue : float
This property holds the minimum Z value for the generated surface points.
Defaults to 0.0.
When setting this property the corresponding maximum value is adjusted if necessary, to ensure that the range remains valid.
访问函数:
| float | minZValue() const |
| void | setMinZValue(float min) |
Notifier signal:
| void | minZValueChanged(float value) |
成员函数
QHeightMapSurfaceDataProxy::QHeightMapSurfaceDataProxy(QObject *parent = Q_NULLPTR)
Constructs QHeightMapSurfaceDataProxy with the given parent.
QHeightMapSurfaceDataProxy::QHeightMapSurfaceDataProxy(const QImage &image, QObject *parent = Q_NULLPTR)
Constructs QHeightMapSurfaceDataProxy with the given image and parent. Height map is set by calling setHeightMap() with image.
参见 heightMap.
QHeightMapSurfaceDataProxy::QHeightMapSurfaceDataProxy(const QString &filename, QObject *parent = Q_NULLPTR)
Constructs QHeightMapSurfaceDataProxy from the given image filename and parent. Height map is set by calling setHeightMapFile() with filename.
参见 heightMapFile.
[virtual] QHeightMapSurfaceDataProxy::~QHeightMapSurfaceDataProxy()
Destroys QHeightMapSurfaceDataProxy.
void QHeightMapSurfaceDataProxy::setHeightMap(const QImage &image)
Replaces current data with the height map data specified by image.
There are several formats the image can be given in, but if it is not in a directly usable format, a conversion is made.
Note: If the result seems wrong, the automatic conversion failed and you should try converting the image yourself before setting it. Preferred format is QImage::Format_RGB32 in grayscale.
The height of the image is read from the red component of the pixels if the image is in grayscale, otherwise it is an average calculated from red, green, and blue components of the pixels. Using grayscale images may improve data conversion speed for large images.
Not recommended formats: all mono formats (for example QImage::Format_Mono).
The height map is resolved asynchronously. QSurfaceDataProxy::arrayReset() is emitted when the data has been resolved.
Note: Setter function for property heightMap.
参见 heightMap().
void QHeightMapSurfaceDataProxy::setHeightMapFile(const QString &filename)
Replaces current data with height map data from the file specified by filename.
Note: Setter function for property heightMapFile.
参见 heightMapFile() and heightMap.
void QHeightMapSurfaceDataProxy::setValueRanges(float minX, float maxX, float minZ, float maxZ)
A convenience function for setting all minimum (minX and minZ) and maximum (maxX and maxZ) values at the same time. The minimum values must be smaller than the corresponding maximum value. Otherwise the values get adjusted so that they are valid.