The following types are used as parameters and return values in functions related to display features and drawing within GlobalMapper. These types use fixed, numeric constants, which are defined here.
- globalmapper.GM_BlendMode_t8
This type represents the different blend modes available
- Values:
GM_BlendMode_None = 0
GM_BlendMode_Multiple = 1
GM_BlendMode_Screen = 2
GM_BlendMode_Overlay = 3
GM_BlendMode_HardLight = 4
GM_BlendMode_ColorBurn = 5
GM_BlendMode_ColorDodge = 6
GM_BlendMode_ApplyColor = 7
GM_BlendMode_ApplyColorReverse = 8
GM_BlendMode_Darken = 9
GM_BlendMode_Lighten = 10
GM_BlendMode_Difference = 11
GM_BlendMode_Exclusion = 12
GM_BlendMode_KeepRedChannel = 13
GM_BlendMode_KeepGreenChannel = 14
GM_BlendMode_KeepBlueChannel = 15
- GM_BlendMode_SpotNaturalColor = 16
view SPOT images as natural color
- GM_BlendMode_PsuedoNaturalColor = 17
simple weighted average
- GM_BlendMode_ColorToGrayscale = 18
convert RGB color image to grayscale in GlobalMapperInterface.h, which should match this.
GM_BlendMode_NumModes = 19
- globalmapper.GM_ColorFormat_t32
List of supported color formats for GM_DrawLayerListToMemory
- Values:
- GM_ColorFormat_32Bit_ABGR = 0
32-bit color (alpha, blue, green, red)
- GM_ColorFormat_32Bit_ARGB = 1
32-bit color (alpha, red, green, blue)
- GM_ColorFormat_16Bit_565 = 2
16-bit color (5 bits red, 6 bits green, 5 bits blue)
- GM_ColorFormat_24Bit_BGR = 3
24-bit color (blue, green, red)
- GM_ColorFormat_24Bit_RGB = 4
24-bit color (red, green, blue)
GM_ColorFormat_NumFormats = 5
- globalmapper.GM_ContrastMode_t8
This type represents the different contrast adjustment modes that are available
- Values:
- GM_Contrast_None = 0
No contrast adjustments
- GM_Contrast_PercentageStretch = 1
Stretch within some std-dev of mean to 0-255 range
- GM_Contrast_RangeStretch = 2
Stretch entire valid range to 0-255 range
- GM_Contrast_NumModes = 3
Count of contrast modes available
- GM_Contrast_RangeStretchCustom = 4
Stretch custom range to 0-255 range
- GM_Contrast_HistogramEqualization = 5
Equalize histogram of image
GM_Contrast_DefaultAuto = GM_Contrast_PercentageStretch
- globalmapper.GM_CustomShaderFlags_t32
This type represents flags available for custom shaders
- Values:
- GM_CustomShader_DontBlend = 0x00000001
Don’t blend colors between elevation values
- GM_CustomShader_StretchToRange = 0x00000002
Stretch custom shader to cover valid elevation range
- GM_CustomShader_ShadeSlopes = 0x00000004
Shade slopes of terrain rather than elevation values
- globalmapper.GM_DrawFlags_t32
Flags to control the GM_DrawLayerList and GM_DrawPackageList operations
- Values:
- GM_DrawFlags_BestRasterLayers = 0x00000001
Only draw the best raster layers for this zoom scale
- GM_DrawFlags_BestRasterLayersHiRes = 0x00000003
Same as GM_DrawFlags_BestRasterLayers, only it shows higher resolution layers a bit sooner
- GM_DrawFlags_LowResRasterLayers = 0x00000002
Only draw the lowest resolution raster layers
- GM_DrawFlags_HiResRasterLayers = 0x00000004
Only draw the highest resolution raster layers
- GM_DrawFlags_BestRasterChart = 0x00000005
Only draw the best raster chart (this is tuned for marine chart display)
- GM_DrawFlags_EraseBackground = 0x00000100
Erase the background with the current background color (GM_SetBackgroundColor)
- GM_DrawFlags_HideAreas = 0x00000200
Do not draw any area or mesh (3D model) features from vector layers
- GM_DrawFlags_HideLines = 0x00000400
Do not draw any line features from vector layers
- GM_DrawFlags_HidePoints = 0x00000800
Do not draw any point features from vector layers
- GM_DrawFlags_SeparateVectorLayers = 0x00001000
Draw each vector separately rather than drawing all at once.
- GM_DrawFlags_HideLabels = 0x00002000
Do not label any rendered features
- GM_DrawFlags_DontMaintainAspectRatio= = 0x00004000
Do NOT maintain the aspect ratio when drawing (this allows stretched views)
- GM_DrawFlags_HidePartialLabels = 0x00008000
Hide labels that are not entirely in the draw window
- GM_DrawFlags_ShowRenderProgress = 0x00010000
Show render progress dialog or call progress callback if provided
- GM_DrawFlags_HideExtraIconText = 0x00020000
Hide any extra text shown below road icons
- GM_DrawFlags_HideNonIconRoadLabels = 0x00040000
Hide any road line labels that are not iconized
- GM_DrawFlags_RenderVertices = 0x00080000
Render vertices for area and line features
- GM_DrawFlags_IncrementalRender = 0x00100000
Do an incremental render so that draw progress can be seen as layers complete rendering
- GM_DrawFlags_NoAutoInterpolation = 0x00200000
Disable automatic interpolation of rasters at intermediate zoom ranges (results in faster renders w/ less quality)
- GM_DrawFlags_DrawMapLayoutLayers = 0x00400000
Render any map layout layers that are enabled, like elevation legend, distance scale, feature legend, margins, and north arrow
- GM_DrawFlags_Hide3DFeatures = 0x00800000
Don’t draw any 3D features on the 2D map
- GM_DrawFlags_NoValidBgColorPixels = 0x01000000
If set ensures that no valid pixels in the output will have the background color. This means rendered pixels that would have that color are adjusted by 1 so they don’t exactly match.
- GM_DrawFlags_OnlyLoadedLayers = 0x02000000
Don’t load new maps in map catalog for this draw if set
- GM_DrawFlags_HideSelFeatures = 0x04000000
Don’t draw any selected features on the 2D map
- GM_DrawFlags_IgnoreTypeFilter = 0x08000000
Ignore any current draw filters and just draw all vector features (subject to ‘deleted’ flag)
- GM_DrawFlags_NoResampling = 0x10000000
Don’t resample layers regardless of their settings
- GM_DrawFlags_RasterMask = 0x00000007
Mask for raster draw options
- globalmapper.GM_FontBackground_t8
This type represents the different font background options
- Values:
- GM_Font_BgAuto = 0
Automatically choose transparent or opaque background (all transparent except when centered on line)
- GM_Font_BgOpaque = 1
Fill label background with current background color
- GM_Font_BgTransparent = 2
Make label background transparent
- globalmapper.GM_MapCatalogDisplayType_t8
Display type for map catalog
- Values:
GM_MapCatalog_DisplayTypePercent = 0
GM_MapCatalog_DisplayTypePixelSize = 1
GM_MapCatalog_DisplayTypeScale = 2
GM_MapCatalog_DisplayTypeScaleRange = 3
GM_MapCatalog_NumDisplayTypes = 4
- globalmapper.GM_MapCatalogMapOpt_t8
Options for map catalog
- Values:
- GM_MapCatalog_SetMapProjection = 0
Set the native projection of the map at the given index. Data is GM_Projection_t*
GM_MapCatalog_NumMapOpts = 1
- globalmapper.GM_MapLayoutPiece_t8
Type defining map layout pieces that can be saved out to a bitmap file with GM_ExportMapLayoutComponent
- Values:
- GM_MapLayout_Scale = 0
Distance scale bar
- GM_MapLayout_ElevLegend = 1
Elevation legend
- GM_MapLayout_MapLegend = 2
Map legend with vector types and/or palette
GM_MapLayout_NumPieceTypes = 3
- globalmapper.GM_PixelTransFlags_t8
Flags for the type of pixel translucency
- Values:
- GM_PixelTrans_None = 0x00
No per-pixel translucency
- GM_PixelTrans_Alpha = 0x01
An alpha channel (last band in file) is present
- GM_PixelTrans_AssociatedAlpha = 0x02
Alpha channel is associated (any non-zero value is opaque, used by TIFF)
- GM_PixelTrans_InvalidPixels = 0x04
Has invalid pixels or areas (but not a full alpha)
- GM_PixelTrans_SpecialVal = 0x08
Format has a special value or palette index that is transparent (i.e. PNG sometimes uses this)
- globalmapper.GM_PosDisplayFormat_t8
Misc. advanced options flags used with GM_Utility.SetMiscOptionEx
- Values:
- GM_POS_LatLonDecimal = 0
Display/save lat/lon as dd.ddddddd <hemi> [always positive, include hemisphere indicator]
- GM_POS_LatLonDMS = 1
Display/save lat/lon as dd mm ss.ss
- GM_POS_LatLonDM = 2
Display/save lat/lon as dd mm.mmm
- GM_POS_MGRS = 3
Display/save lat/lon as MGRS
- GM_POS_LatLonDecimalPlain = 4
Display/save lat/lon as +/-dd.ddddddd [no hemisphere indicator, West/South are negative]
- GM_POS_NUM_TYPES = 5
Number of advanced option flags
GM_POS_Default = GM_POS_LatLonDMS
- globalmapper.GM_SelectProjFlags_t32
List of flags for selecting a projection
- Values:
- GM_SelectProj_NoInterplanetaryDatums = 0x00000001
Do not display interplanetary datums in projection selection dialog
- globalmapper.GM_ShaderBlendingAlg_t8
Ways to blend the intensity when using multiple light sources.
- Values:
GM_BLENDING_ALG_AVERAGE = 0
GM_BLENDING_ALG_MAXIMUM = 1
GM_BLENDING_ALG_MINIMUM = 2
GM_BLENDING_ALG_WEIGHTED_AVERAGE = 3
GM_BLENDING_NUM_TYPES = 4
- globalmapper.GM_RotationSense_t16
This type is OR’d with the mRotation member of the GM_PointStyle_t structure to specify symbol rotation sense.
- Values:
- GM_RotateSense_TopOfMap = 0x0000
Rotation is to top of map (default)
- GM_RotateSense_TrueNorth = 0x1000
Rotation is relative to true north
- GM_RotateSense_MagNorth = 0x2000
Rotation is relative to magnetic north
GM_RotateSense_Mask = 0xF000
GM_RotateAngle_Mask = 0x0FFF