api:dk11:delphi:gislayerpixel.tgis_layerpixel_methods
TGIS_LayerPixel methods
DK for Delphi | GisLayerPixel.TGIS_LayerPixel | Constructors | Fields | Methods | Properties | Events
Methods
Inherited
Overrides
Protected
Private
| Name | Visibility | Description | |
|---|---|---|---|
| addTransparency | protected | Applies transparency defined by transparent zones to image pixels. | |
| Alive | public | Makes a layer non-dormant. (Inherited from TGIS_Layer) |
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| ApplyAntialiasSettings(Boolean) | public | Applies antialias settings used in scaling operations. | |
| ApplyAntialiasSettings(Boolean; TGIS_ScalingFilter) | public | Applies antialias settings used in scaling operations. | |
| ApplyAutoStyle | public | Applies auto-styling to the layer. (Inherited from TGIS_Layer) |
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| ApplyAutoStyle(Boolean) | public | Applies auto-styling to the layer. (Inherited from TGIS_Layer) |
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| applyColorsCorrectionByVals | protected | Applies brightness, contrast, and color correction from pixel parameters to the final correction table. | |
| applyConfigOptions | protected | Applies layer option settings from a configuration file. (Overrides TGIS_Layer.applyConfigOptions) |
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| applyConfigProjection(TGIS_ConfigAbstract) | protected | Applies projection settings from a configuration file. (Inherited from TGIS_Layer) |
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| applyConfigProjection(TGIS_ConfigAbstract; TGIS_Layer) | protected | Applies projection settings from a configuration file. (Inherited from TGIS_Layer) |
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| ApplyCuttingPolygon | public | Sets a clipping polygon for the layer. (Overrides TGIS_Layer.ApplyCuttingPolygon) |
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| ARGB2Gray | protected | Converts an ARGB bitmap buffer to gray scale. | |
| AssignedParentLayerInternal | public | Assigns a parent pixel layer for hierarchical layer types such as WMTS (Web Map Tile Service). | |
| bandsMappingChanging | protected | Checks whether the current band mapping differs from the default mapping. | |
| basePointRot | protected | Computes the point position after world file rotation is applied. | |
| basePointUnRot | protected | Computes the original position of a rotated point. | |
| baseRotatedExtent | protected | Computes the bounding extent after world file rotation is applied. | |
| baseUnrotatedExtent | protected | Computes the original extent for a rotated extent. | |
| Build(Boolean; TGIS_CSCoordinateSystem; TGIS_Extent; Double) | public | Builds an in-memory bitmap or grid layer. | |
| Build(Boolean; TGIS_CSCoordinateSystem; TGIS_Extent; Integer; Integer) | public | Builds an in-memory bitmap or grid layer. | |
| Build(String; Boolean; TGIS_CSCoordinateSystem; TGIS_Extent; Double; TGIS_LayerPixelSubFormat) | public | Builds a bitmap or grid layer. | |
| Build(String; Boolean; TGIS_CSCoordinateSystem; TGIS_Extent; Integer; Integer; TGIS_LayerPixelSubFormat) | public | Builds a bitmap or grid layer. | |
| Build(String; TGIS_CSCoordinateSystem; TGIS_Extent; Double) | public | Builds a bitmap image layer. | |
| Build(String; TGIS_CSCoordinateSystem; TGIS_Extent; Integer; Integer) | public | Builds a bitmap image layer. | |
| calculatePixelsize | protected | Calculates the pixel size in layer units. | |
| ChangeHash | public | Changes the hash used to verify layer modifications. (Inherited from TGIS_Layer) |
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| ClearModified | public | Sets IsModified flag to false for a layer and its sublayers. (Inherited from TGIS_Layer) |
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| convertBitsToPixels | protected | Internal use only. | |
| doApplyAutoStyle | protected | Applies layer-specific auto-styling implementation. (Inherited from TGIS_Layer) |
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| Dormant | public | Makes a layer dormant. (Overrides TGIS_Layer.Dormant) |
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| DormantGain | public | Calculates the approximate memory gain in megabytes that can be achieved by calling Dormant. (Inherited from TGIS_Layer) |
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| Draw | public | Draws a layer. (Inherited from TGIS_Layer) |
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| DrawEx | public | Draws a layer within a defined extent. (Overrides TGIS_Layer.DrawEx) |
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| drawExtent | protected | Calculates the device drawing and clipping area. (Inherited from TGIS_Layer) |
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| drawExtentEx | protected | Calculates the device drawing and clipping area. (Overrides TGIS_Layer.drawExtentEx) |
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| DrawFlash | public | Does nothing and is provided for compatibility only. (Overrides TGIS_Layer.DrawFlash) |
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| DrawSelected | public | Draws only the selected item(s) on layer. (Inherited from TGIS_Layer) |
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| DrawSelectedEx | public | Draws only the selected item(s) on layer that are within a defined extent. (Inherited from TGIS_Layer) |
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| DrawSpecial | public | Draws a layer using the passed renderer. (Overrides TGIS_Layer.DrawSpecial) |
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| enhanceContrast | protected | Enhances contrast by proportionally stretching RGB values to the full 0 to 255 range. | |
| ExportLayer | public | Exports this layer to another pixel layer. | |
| finalARGBMap | protected | Applies final ARGB band mapping and enables or disables channels. | |
| FinalizeWrite | public | Performs any operation required to safely finalize a write operation, such as building quad trees for TGIS_FilePixelStore. | |
| findProperPixelLock | protected | Checks for an existing locked pixel buffer matching the request. | |
| ForEachSubLayer | public | Calls the callback for the layer and all of its sublayers. (Inherited from TGIS_Layer) |
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| fullCorrection | protected | Applies the final correction table to a 32-bit image pixel buffer. | |
| fullRGBCorrection | protected | Applies full RGB correction to 32-bit image pixels. | |
| GenerateRamp(TGIS_Color; TGIS_Color; TGIS_Color; Double; Double; Double; Boolean; Double; Double; TGIS_ParamsSectionPixel; Boolean) | public | Generates a color ramp for grid or DEM (Digital Elevation Model) rendering. | |
| GenerateRamp(TGIS_Color; TGIS_Color; TGIS_Color; Double; Double; Double; Boolean; Double; Double; TGIS_ParamsSectionPixel; Boolean; TGIS_ColorInterpolationMode) | public | Generates a color ramp for grid or DEM (Digital Elevation Model) rendering. | |
| GenerateRampEx(Double; Double; TGIS_ColorMapArray; TGIS_ParamsSectionPixel) | public | Generates a color ramp for grid or DEM (Digital Elevation Model) rendering from a mapped color array. | |
| GenerateRampEx(Double; Double; TGIS_ColorMapArray; TGIS_ParamsSectionPixel; TGIS_ColorInterpolationMode) | public | Generates a color ramp for grid or DEM (Digital Elevation Model) rendering from a mapped color array. | |
| getAlphaLine | protected | Internal use only. | |
| GetAltitudeMapZone | public | Gets an altitude zone definition used for altitude-to-color mapping. | |
| getAsyncState | protected | Report data-fetching state for asynchronous raster sources such as ECW. | |
| GetAvailableLayers | public | Gets a list of layers available in storage. (Inherited from TGIS_Layer) |
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| GetBitmap | public | Fills the provided _bitmap array with values for _extent. | |
| getBitmapData | protected | Fills the provided _bitmap array with values for _extent. | |
| getBitmapPixels | protected | Gets bitmap layer data in ARGB (Alpha, Red, Green, Blue) format. | |
| GetColorRamp | public | Calculates the default color ramp color for a grid value. | |
| GetGrid | public | Fills the provided _grid array with values for _extent. | |
| getGridData | protected | Fills the provided _grid array with values for _extent. | |
| getLine | protected | Internal use only. | |
| getLineBasic | protected | Internal use only. | |
| getLineBits | protected | Internal use only. | |
| getLinePixels | protected | Internal use only. | |
| getMapZoneVal_Old | protected | Parses a legacy mapping zone definition from a string. | |
| getNativeLine | protected | Internal use only. | |
| getNativeLineGrayGrid | protected | Internal use only. | |
| getNativeValue | protected | Internal use only. | |
| GetRawBitmap | public | Fills the provided _bitmap array with values for _extent. | |
| GetSubLayer | public | Retrieves the layer identified by name. (Inherited from TGIS_Layer) |
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| gridToARGBTable | protected | Converts grid values for the specified extent to ARGB pixels. | |
| histEqPav | protected | Prepares a correction table using histogram equalization for full-color raster images. | |
| histRGB2Gray | protected | Prepares a single greyscale histogram from the red, green, and blue channel histograms. | |
| HourglassShake | public | Notifies about a busy state using an hourglass. (Inherited from TGIS_Layer) |
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| ImportLayer(TGIS_LayerPixel; TGIS_Extent) | public | Imports pixel data from an existing pixel layer. | |
| ImportLayer(TGIS_LayerPixel; TGIS_Extent; TGIS_CSCoordinateSystem; Cardinal; Cardinal) | public | Imports pixel data from an existing pixel layer. | |
| ImportLayer(TGIS_LayerPixel; TGIS_Extent; TGIS_CSCoordinateSystem; Cardinal; Cardinal; TGIS_LayerPixelSubFormat) | public | Imports pixel data from an existing pixel layer. | |
| importPixelData | protected | Import and store raster data from another pixel layer. | |
| InitializeWrite | public | Performs any operation required to safely initialize a write operation, such as batch preparation for TGIS_FilePixelStore. | |
| inversePalette | protected | Prepares a negative color palette from the current RGB (red, green, blue) palette. | |
| IsGrid | public | Checks if the layer type is grid. (Overrides TGIS_Layer.IsGrid) |
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| IsPixel | public | Checks if the layer type is pixel. (Overrides TGIS_Layer.IsPixel) |
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| isSectionInVisibilityRange | protected | Checks whether the section is visible by testing layer properties: Level with MinLevel/MaxLevel, ScaleAsFloat with MinScale/MaxScale, and Zoom with MinZoom/MaxZoom. (Inherited from TGIS_Layer) |
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| isSublayer | protected | Checks if the layer is a sublayer. (Inherited from TGIS_Layer) |
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| IsSupported | public | Checks if the operation is supported by the layer. (Inherited from TGIS_Layer) |
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| IsTopology | public | Checks if the layer type is topology. (Inherited from TGIS_Layer) |
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| IsVector | public | Checks if the layer type is vector. (Inherited from TGIS_Layer) |
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| IsVector3D | public | Checks if the layer type is vector 3D. (Inherited from TGIS_Layer) |
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| IsVisible | public | Checks if the layer is visible in a defined extent and current params. (Inherited from TGIS_Layer) |
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| lanczos3 | protected | Evaluates the Lanczos3 resampling filter function. | |
| linear | protected | Evaluates the linear (triangle) resampling filter function. | |
| Locate | public | If a given point is located within the image area, returns True and sets output values. | |
| LocateEx | public | If a given point is located within the image area, returns True and sets output values. | |
| Lock | public | Locks the layer for burst-mode operation. (Inherited from TGIS_Layer) |
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| LockEstimate | public | Estimates the memory size required to lock and update a pixel layer area. | |
| LockPixels(TGIS_Extent; TGIS_CSCoordinateSystem; Boolean) | public | Locks a fragment of the pixel layer for update operations. | |
| LockPixels(TGIS_Extent; TGIS_CSCoordinateSystem; Double; Boolean) | public | Locks a fragment of the pixel layer for update operations. | |
| LockPixels(TGIS_Extent; TGIS_CSCoordinateSystem; Double; Integer; Boolean) | public | Locks a fragment of the pixel layer for update operations. | |
| LockPixels(TGIS_Extent; TGIS_CSCoordinateSystem; Integer; Boolean) | public | Locks a fragment of the pixel layer for update operations. | |
| LockPixels(TRect; Boolean) | public | Locks a fragment of the pixel layer for update operations. | |
| LockPixels(TRect; Integer; Boolean) | public | Locks a fragment of the pixel layer for update operations. | |
| LockPixels(TRect; TGIS_Extent; Integer; Integer; Integer; Boolean) | public | Locks a fragment of the pixel layer for update operations. | |
| lockThread | protected | Locks the layer thread. (Inherited from TGIS_Layer) |
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| Loop(Double; TGIS_Shape; Boolean) | public | Prepares an enumerator to iterate pixels along or within a shape. | |
| Loop(Double; TGIS_Shape; Integer; Boolean) | public | Prepares an enumerator to iterate pixels along or within a shape. | |
| Loop(TGIS_Extent; Double; Boolean) | public | Prepares an enumerator to iterate the layer over an extent. | |
| Loop(TGIS_Extent; Double; Boolean; TGIS_Shape; String; Boolean) | public | Prepares an enumerator to iterate pixels in the layer. | |
| Loop(TGIS_Extent; Double; Boolean; TGIS_Shape; String; Integer; Boolean) | public | Prepares an enumerator to iterate pixels in the layer. | |
| Loop(TGIS_Extent; Double; Integer; Boolean) | public | Prepares an enumerator to iterate the layer over an extent. | |
| Loop(TGIS_Extent; Double; TGIS_Shape; String; Boolean) | public | Prepares an enumerator to iterate the layer with pixels treated as points. | |
| Loop(TGIS_Extent; Double; TGIS_Shape; String; Integer; Boolean) | public | Prepares an enumerator to iterate the layer with pixels treated as points. | |
| makeHistogram | protected | Reads a cached histogram or creates and stores one if needed. | |
| MapColorValue | public | Maps a color value to a pixel color. | |
| MapGridValue | public | Maps a grid value to a pixel color. | |
| MapToRaster | public | Converts map coordinates to a raster pixel location. | |
| MapToRasterRect | public | Converts a map extent to a raster rectangle. | |
| MarkAsProxy | public | Marks the layer to be used as a proxy layer. (Inherited from TGIS_Layer) |
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| MarkModified | public | Sets IsModified flag to true for a layer and its sublayers. (Inherited from TGIS_Layer) |
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| MergeLayer | public | Merges pixel data from another pixel layer into this layer. | |
| Move | public | Moves a layer up or down in the viewer zorder list. (Inherited from TGIS_Layer) |
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| MoveEx | public | Moves a layer up or down in the viewer zorder list (only visible layers). (Inherited from TGIS_Layer) |
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| MustCalculateStatistics | public | Verifies whether all statistics required to render the layer are available. (Inherited from TGIS_Layer) |
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| MustReproject | public | Checks whether the layer must be reprojected. (Inherited from TGIS_Layer) |
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| MustSave | public | Checks whether the layer was modified by editing. (Overrides TGIS_Layer.MustSave) |
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| Open | public | Opens the layer. (Inherited from TGIS_Layer) |
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| OpenAsync | public | Opens the layer asynchronously. (Inherited from TGIS_Layer) |
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| openBufferedFileStream | protected | Opens a buffered file stream for reading. | |
| optimizeParamsCache(Integer) | protected | Moves the specified section to the top of the cached list. (Inherited from TGIS_Layer) |
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| optimizeParamsCache(Integer; Boolean) | protected | Moves the specified section to the top of the cached list. (Inherited from TGIS_Layer) |
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| Paint | public | Draws the layer or fires PaintLayer event (if defined). (Inherited from TGIS_Layer) |
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| Prepare | public | Opens the layer for non-drawing operations. (Inherited from TGIS_Layer) |
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| prepareAltitudeMapTable | protected | Prepares the altitude-to-color lookup table for DEM (Digital Elevation Model) rendering. | |
| prepareColorRamp | protected | Prepares the cached color ramp array used for raster color mapping. | |
| PrepareForExport | public | Prepares layer for export. (Inherited from TGIS_Layer) |
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| prepareMinMaxZ | protected | Scans the grid to determine minimum and maximum DEM (Digital Elevation Model) values. | |
| prepareMinMaxZGray | protected | Scans the image to determine minimum and maximum DEM (Digital Elevation Model) values when RGB data is interpreted as a single grid channel. | |
| PrepareParams | public | Prepares cached rendering parameters for internal use. (Inherited from TGIS_Layer) |
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| prepareParamsCache | protected | Prepares the cached section list for rendering. (Inherited from TGIS_Layer) |
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| prepareParamsCache(String) | protected | Prepares the cached section list for the specified style. (Inherited from TGIS_Layer) |
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| prepColorMapTbl | protected | Prepares the corRGB table using red, green, and blue channel control points. | |
| prepCorTbl | protected | Prepares a mapping table with no color correction for full-color raster images. | |
| prepFinalCorTable | protected | Prepares the final color-mapping table for 32-bit ARGB images. | |
| prepFullGrayTable | protected | Prepares a mapping table for converting a full-color ARGB (32-bit alpha, red, green, blue) bitmap buffer to greyscale. | |
| prepFullRGBMapTbl | protected | Prepares the full RGB lookup table used for per-channel color correction. | |
| prepGrayMapTbl | protected | Prepares the mapGray2RGB table for mapping greyscale values to colors using grayMapList mapping control points. | |
| prepRGBHist | protected | Prepares channel histograms for an ARGB (32-bit alpha, red, green, blue) bitmap buffer. | |
| prepTransparent | protected | Prepares the transparency lookup table for raster rendering. | |
| PreRecognize | public | Checks if the layer can read the file. (Inherited from TGIS_Layer) |
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| Project | public | Applies a projection on the single point. (Inherited from TGIS_Layer) |
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| Project3D | public | Applies a projection on the single point in 3D. (Inherited from TGIS_Layer) |
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| Project3D_Ref | public | Applies projection to a single 3D point. (Inherited from TGIS_Layer) |
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| ProjectExtent | public | Applies a projection on the extent. (Inherited from TGIS_Layer) |
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| projectionNeed | protected | Checks whether image reprojection is required. | |
| Project_Ref | public | Applies projection to a single point. (Inherited from TGIS_Layer) |
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| putBitmapRawData | protected | Writes the provided _bitmap array as raw values for _extent. | |
| PutGrid | public | Writes grid values into the layer for the area defined by _extent. | |
| RaiseBusyEvent | public | Fires Busy event of the layer. (Inherited from TGIS_Layer) |
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| RaiseBusyPrepare | public | Fires BusyPrepare method of the assigned viewer. (Inherited from TGIS_Layer) |
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| RaiseBusyRelease | public | Fires BusyRelease method of the assigned viewer. (Inherited from TGIS_Layer) |
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| RaiseBusyShake | public | Fires BusyShake method of the assigned viewer. (Inherited from TGIS_Layer) |
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| RasterToMap | public | Converts a raster pixel location to map coordinates. | |
| RasterToMapRect | public | Converts a raster rectangle to a map extent. | |
| ReadConfig | public | Reads the layer configuration files. (Inherited from TGIS_Layer) |
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| ReadConfigParam | public | Reads a layer configuration parameter. (Inherited from TGIS_Layer) |
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| readDoubleBE | protected | Reads an 8-byte floating-point value from big-endian data. | |
| readDoubleLE | protected | Reads an 8-byte floating-point value from little-endian data. | |
| ReadGridLine | public | Reads a specific grid line into the preallocated buffer. | |
| RecalcExtent | public | Recalculates the layer extent. (Inherited from TGIS_Layer) |
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| RecalcProjectedExtent | public | Recalculates the projected extent. (Overrides TGIS_Layer.RecalcProjectedExtent) |
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| Recalculate | public | Recalculates the minimum and maximum elevation values for the grid. | |
| ReOpen | public | Reopens the layer. (Overrides TGIS_Layer.ReOpen) |
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| replaceWorkingFiles | protected | Replaces the original image with the modified temporary image. | |
| RereadConfig | public | Rereads the layer configuration files. (Inherited from TGIS_Layer) |
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| resetMustReproject | protected | Resets the MustReproject state. (Inherited from TGIS_Layer) |
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| resolveBandDefintion | protected | Resolves the band definition from ForceBandLayout or raster metadata. | |
| RevertAll | public | Reverts layer to its original content. (Overrides TGIS_Layer.RevertAll) |
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| RootLayer | public | Returns the absolute parent layer. (Inherited from TGIS_Layer) |
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| rotationNeed | protected | Checks whether raster image rotation is required. | |
| SaveAll | public | Saves the layer and destroys mirrored items. (Inherited from TGIS_Layer) |
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| SaveData | public | Saves the entire pixel layer to its file. (Overrides TGIS_Layer.SaveData) |
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| ScaleGrid(TGIS_GridArray; TGIS_GridArray; Integer; Integer) | public | Scales a grid array using the default linear resampling filter. | |
| ScaleGrid(TGIS_GridArray; TGIS_GridArray; Integer; Integer; TGIS_ScalingFilter) | public | Scales a grid array using the specified resampling filter. | |
| setBitmapPalette | protected | Sets the bitmap palette to a greyscale palette. | |
| setBmpTransparent | protected | Fill the provided _bitmap array with alpha set to $FF for all pixels. | |
| SetCSByEPSG | public | Sets the coordinate system using an EPSG code. (Inherited from TGIS_Layer) |
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| SetCSByWKT | public | Sets the coordinate system from a WKT (Well-Known Text) string containing a GEOGCS or PROJCS definition. (Inherited from TGIS_Layer) |
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| SetCSByWKTFile | public | Sets the coordinate system from a file containing a WKT (Well-Known Text) string, such as a Shapefile .PRJ file. (Inherited from TGIS_Layer) |
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| SetCurrentFileScale | public | Sets the current internal file scale; 1.0 means no scaling. | |
| setFileScale | protected | Sets the internal image scale from destination and source widths. | |
| setFileScaleXY | protected | Sets the internal image scale from destination and source dimensions. | |
| setFileView | protected | Sets the internal raster view. | |
| setMapZone(array of Integer; TGIS_Color; TGIS_PixelChannelZone) | protected | Sets a channel mapping zone in the color map table. | |
| setMapZone(array of Integer; TGIS_Color; TGIS_PixelGrayZone) | protected | Sets a greyscale mapping zone in the color map table. | |
| setNoDataTable | protected | Fills the provided _grid array with NoData values. | |
| setPage | protected | Sets CurrentPage for a multi-page raster image. | |
| setUp | protected | Performs general pixel layer setup. (Overrides TGIS_Layer.setUp) |
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| setUp2 | protected | Performs the second general layer setup step. (Inherited from TGIS_Layer) |
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| setUp3 | protected | Performs the third general layer setup step. (Overrides TGIS_Layer.setUp3) |
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| setUpAsync | protected | Performs the first general layer setup step asynchronously. (Inherited from TGIS_Layer) |
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| setUpInternal | protected | Sets up internal pixel layer parameters and cached state. | |
| setupParams | protected | Sets up the internal parameters cache. | |
| SetWorld | public | Sets world file affine transformation parameters. | |
| setWorldFile | protected | Sets the layer extent from a world file such as .tfw or .bpw. | |
| simpleRGBCorrection | protected | Applies simple red, green, and blue band corrections to the image. | |
| storeConfigOptions | protected | Stores layer option settings in a configuration file. (Overrides TGIS_Layer.storeConfigOptions) |
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| transformExtent | protected | Transforms an extent using the custom transformation. (Inherited from TGIS_Layer) |
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| transformNeed | protected | Checks whether any image transformation is required. | |
| Unlock | public | Unlocks the layer from burst-mode operation. (Inherited from TGIS_Layer) |
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| UnlockPixels | public | Unlocks a fragment and posts any pending changes back to the layer. | |
| unlockThread | protected | Unlocks the layer thread. (Inherited from TGIS_Layer) |
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| UnprepareForExport | public | Finalizes export initialized with PrepareForExport. (Inherited from TGIS_Layer) |
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| Unproject | public | Applies reverse projection (recovers from the projection) on the single point. (Inherited from TGIS_Layer) |
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| Unproject3D | public | Applies reverse projection to a single 3D point. (Inherited from TGIS_Layer) |
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| Unproject3D_Ref | public | Applies reverse projection to a single 3D point. (Inherited from TGIS_Layer) |
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| UnprojectExtent | public | Applies reverse projection (recovers from the projection) on the extent. (Inherited from TGIS_Layer) |
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| Unproject_Ref | public | Applies reverse projection to a single point. (Inherited from TGIS_Layer) |
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| ViewerReParent | public | Sets the viewer for the layer and its sublayers. (Inherited from TGIS_Layer) |
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| WriteConfig | public | Writes the layer configuration files. (Inherited from TGIS_Layer) |
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2026/07/11 00:31