Base proxy class for Q3DSurface . 更多...
| 头： | #include <QHeightMapSurfaceDataProxy> |
| Since: | QtDataVisualization 1.0 |
| 实例化： | HeightMapSurfaceDataProxy |
| 继承： | QSurfaceDataProxy |
|
| 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 ) |
| 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 ) |
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 ，和 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.
另请参阅 QSurfaceDataProxy and Qt Data Visualization 数据处理 .
This property holds the height map image to be visualized.
访问函数：
| QImage | heightMap () const |
| void | setHeightMap (const QImage & image ) |
通知程序信号：
| void | heightMapChanged (const QImage & image ) |
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 ) |
通知程序信号：
| void | heightMapFileChanged (const QString & filename ) |
This property holds the maximum X value for the generated surface points.
默认为
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 ) |
通知程序信号：
| void | maxXValueChanged (float value ) |
This property holds the maximum Z value for the generated surface points.
默认为
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 ) |
通知程序信号：
| void | maxZValueChanged (float value ) |
This property holds the minimum X value for the generated surface points.
默认为
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 ) |
通知程序信号：
| void | minXValueChanged (float value ) |
This property holds the minimum Z value for the generated surface points.
默认为
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 ) |
通知程序信号：
| void | minZValueChanged (float value ) |
Constructs QHeightMapSurfaceDataProxy 采用给定 parent .
Constructs QHeightMapSurfaceDataProxy 采用给定 image and parent . Height map is set by calling setHeightMap () 采用 image .
另请参阅 heightMap .
Constructs QHeightMapSurfaceDataProxy from the given image filename and parent . Height map is set by calling setHeightMapFile () 采用 filename .
另请参阅 heightMapFile .
[virtual]
QHeightMapSurfaceDataProxy::
~QHeightMapSurfaceDataProxy
()
销毁 QHeightMapSurfaceDataProxy .
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.
注意： 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.
注意： Setter 函数对于特性 heightMap .
另请参阅 heightMap ().
Replaces current data with height map data from the file specified by filename .
注意： Setter 函数对于特性 heightMapFile .
另请参阅 heightMapFile () 和 heightMap .
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.