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SharpMap/Examples/WinFormSamples/Samples/GdalSample.cs at main · SharpMap/SharpMap · GitHub
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GdalSample.cs
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Examples
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WinFormSamples
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Samples
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GdalSample.cs
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using
System
;
using
System
.
Linq
;
using
System
.
Reflection
;
namespace
WinFormSamples
.
Samples
{
public
static
class
GdalSample
{
private
static
int
_num
;
private
static
string
_gdalSampleDataset
;
public
static
string
GdalSampleDataSet
{
get
{
return
_gdalSampleDataset
;
}
}
public
static
SharpMap
.
Map
InitializeMap
(
float
angle
)
{
_num
%=
9
;
int
num
=
_num
;
_num
++
;
switch
(
num
)
{
case
0
:
case
1
:
case
2
:
case
3
:
return
InitializeGeoTiff
(
num
,
angle
)
;
default
:
return
InitializeVRT
(
num
,
angle
)
;
}
}
private
static
SharpMap
.
Map
InitializeGeoTiff
(
int
index
,
float
angle
)
{
try
{
//Sample provided by Dan Brecht and Joel Wilson
var
map
=
new
SharpMap
.
Map
(
)
;
map
.
BackColor
=
System
.
Drawing
.
Color
.
White
;
const
string
relativePath
=
"GeoData/GeoTiff/"
;
SharpMap
.
Layers
.
GdalRasterLayer
layer
;
switch
(
index
)
{
case
0
:
layer
=
new
SharpMap
.
Layers
.
GdalRasterLayer
(
"GeoTiff"
,
relativePath
+
"utm.tif"
)
;
map
.
Layers
.
Add
(
layer
)
;
break
;
case
1
:
layer
=
new
SharpMap
.
Layers
.
GdalRasterLayer
(
"GeoTiff"
,
relativePath
+
"utm.jp2"
)
;
map
.
Layers
.
Add
(
layer
)
;
break
;
case
2
:
layer
=
new
SharpMap
.
Layers
.
GdalRasterLayer
(
"GeoTiff"
,
relativePath
+
"world_raster_mod.tif"
)
;
map
.
Layers
.
Add
(
layer
)
;
break
;
default
:
if
(
!
System
.
IO
.
File
.
Exists
(
relativePath
+
"format01-image_a.tif"
)
)
{
throw
new
System
.
Exception
(
"Make sure the data is in the relative directory: "
+
relativePath
)
;
}
layer
=
new
SharpMap
.
Layers
.
GdalRasterLayer
(
"GeoTiffA"
,
relativePath
+
"format01-image_a.tif"
)
;
map
.
Layers
.
Add
(
layer
)
;
layer
=
new
SharpMap
.
Layers
.
GdalRasterLayer
(
"GeoTiffB"
,
relativePath
+
"format01-image_b.tif"
)
;
map
.
Layers
.
Add
(
layer
)
;
layer
=
new
SharpMap
.
Layers
.
GdalRasterLayer
(
"GeoTiffC"
,
relativePath
+
"format01-image_c.tif"
)
;
map
.
Layers
.
Add
(
layer
)
;
layer
=
new
SharpMap
.
Layers
.
GdalRasterLayer
(
"GeoTiffD"
,
relativePath
+
"format01-image_d.tif"
)
;
map
.
Layers
.
Add
(
layer
)
;
SharpMap
.
Layers
.
VectorLayer
shapeLayer
;
if
(
!
System
.
IO
.
File
.
Exists
(
relativePath
+
"outline.shp"
)
)
{
throw
new
System
.
Exception
(
"Make sure the data is in the relative directory: "
+
relativePath
)
;
}
shapeLayer
=
new
SharpMap
.
Layers
.
VectorLayer
(
"outline"
,
new
SharpMap
.
Data
.
Providers
.
ShapeFile
(
relativePath
+
"outline.shp"
)
)
;
shapeLayer
.
Style
.
Fill
=
System
.
Drawing
.
Brushes
.
Transparent
;
shapeLayer
.
Style
.
Outline
=
System
.
Drawing
.
Pens
.
Black
;
shapeLayer
.
Style
.
EnableOutline
=
true
;
shapeLayer
.
Style
.
Enabled
=
true
;
map
.
Layers
.
Add
(
shapeLayer
)
;
break
;
}
//if (layer != null)
// layer.UseRotation = true;
map
.
ZoomToExtents
(
)
;
System
.
Drawing
.
Drawing2D
.
Matrix
mat
=
new
System
.
Drawing
.
Drawing2D
.
Matrix
(
)
;
mat
.
RotateAt
(
angle
,
map
.
WorldToImage
(
map
.
Center
)
)
;
map
.
MapTransform
=
mat
;
_gdalSampleDataset
=
"GeoTiff"
+
_num
;
return
map
;
}
catch
(
System
.
TypeInitializationException
ex
)
{
if
(
ex
.
Message
==
"The type initializer for 'OSGeo.GDAL.GdalPINVOKE' threw an exception."
)
{
var
asm
=
Assembly
.
GetAssembly
(
typeof
(
OSGeo
.
GDAL
.
Gdal
)
)
.
GetName
(
)
;
throw
new
System
.
Exception
(
string
.
Format
(
"The application threw a PINVOKE exception. You probably need to copy the unmanaged dll's to your bin directory. "
+
"They are a part of the GDAL NuGet package v{0}."
,
asm
.
Version
.
ToString
(
3
)
)
)
;
}
throw
;
}
}
private
static
readonly
string
[
]
Vrts
=
{
@"..\DEM\Golden_CO.dem"
,
"contours_sample_polyline_play_polyline.asc"
,
"contours_sample_polyline_play1_polyline.vrt"
,
"contours_sample_polyline_play2_polyline.vrt"
,
"contours_sample_polyline_play3_polyline.vrt"
}
;
private
const
string
RelativePath
=
"GeoData/VRT/"
;
private
static
SharpMap
.
Map
InitializeVRT
(
int
index
,
float
angle
)
{
SharpMap
.
Map
map
=
new
SharpMap
.
Map
(
)
;
int
ind
=
index
-
4
;
if
(
ind
>=
Vrts
.
Length
)
ind
=
0
;
if
(
!
System
.
IO
.
File
.
Exists
(
RelativePath
+
Vrts
[
ind
]
)
)
{
throw
new
System
.
Exception
(
"Make sure the data is in the relative directory: "
+
RelativePath
)
;
}
SharpMap
.
Layers
.
GdalRasterLayer
layer
=
new
SharpMap
.
Layers
.
GdalRasterLayer
(
"VirtualRasterTable"
,
RelativePath
+
Vrts
[
ind
]
)
;
var
ext
=
System
.
IO
.
Path
.
GetExtension
(
layer
.
Filename
)
;
map
.
Layers
.
Add
(
layer
)
;
_gdalSampleDataset
=
string
.
Format
(
"'{0}'"
,
ext
!=
null
?
ext
.
ToUpper
(
)
:
string
.
Empty
)
;
map
.
ZoomToExtents
(
)
;
System
.
Drawing
.
Drawing2D
.
Matrix
mat
=
new
System
.
Drawing
.
Drawing2D
.
Matrix
(
)
;
mat
.
RotateAt
(
angle
,
map
.
WorldToImage
(
map
.
Center
)
)
;
map
.
MapTransform
=
mat
;
return
map
;
}
public
static
SharpMap
.
Map
InitializeMap
(
int
angle
,
string
[
]
filenames
)
{
if
(
filenames
==
null
||
filenames
.
Length
==
0
)
return
null
;
var
map
=
new
SharpMap
.
Map
(
)
;
for
(
int
i
=
0
;
i
<
filenames
.
Length
;
i
++
)
{
if
(
filenames
[
i
]
.
StartsWith
(
"PG:"
)
)
{
SharpMap
.
Layers
.
ILayer
lyr
=
null
;
try
{
lyr
=
new
SharpMap
.
Layers
.
GdalRasterLayer
(
$
"PG_RASTER
{
i
}
"
,
filenames
[
i
]
)
;
}
catch
(
Exception
)
{
return
null
;
}
map
.
Layers
.
Add
(
lyr
)
;
}
else
map
.
Layers
.
Add
(
new
SharpMap
.
Layers
.
GdalRasterLayer
(
System
.
IO
.
Path
.
GetFileName
(
filenames
[
i
]
)
,
filenames
[
i
]
)
)
;
}
var
mat
=
new
System
.
Drawing
.
Drawing2D
.
Matrix
(
)
;
mat
.
RotateAt
(
angle
,
map
.
WorldToImage
(
map
.
Center
)
)
;
map
.
MapTransform
=
mat
;
map
.
ZoomToExtents
(
)
;
return
map
;
}
}
}
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