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https://github.com/opensmock/geotools
Geographic Tools as Coordinates, Kinematics and Geodesic utilities for Map Projection.
https://github.com/opensmock/geotools
absolute-coordinates cartesian-coordinates coordinates course geodesic geodesics geodesics-equation geographic heading kinematics open-smock pharo polar-coordinates position smalltalk smock speed
Last synced: 3 months ago
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Geographic Tools as Coordinates, Kinematics and Geodesic utilities for Map Projection.
- Host: GitHub
- URL: https://github.com/opensmock/geotools
- Owner: OpenSmock
- License: mit
- Created: 2023-07-11T10:27:07.000Z (over 1 year ago)
- Default Branch: main
- Last Pushed: 2024-09-19T11:57:02.000Z (3 months ago)
- Last Synced: 2024-09-25T21:24:24.500Z (3 months ago)
- Topics: absolute-coordinates, cartesian-coordinates, coordinates, course, geodesic, geodesics, geodesics-equation, geographic, heading, kinematics, open-smock, pharo, polar-coordinates, position, smalltalk, smock, speed
- Language: Smalltalk
- Homepage:
- Size: 68.4 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
[](./LICENSE)
[](https://github.com/OpenSmock/GeoTools/actions/workflows/Pharo11CI.yml)
[](https://github.com/OpenSmock/GeoTools/actions/workflows/Pharo12CI.yml)
# GeoTools
Geographic Tools as `Coordinates`, `Kinematics` and `GeodesicUtilities`.
## Coordinates tools
Use these classes to store informations on geographical position in different coordinates system.
### Absolute coordinates
Use ```AbsoluteCoordinates``` to store an absolute coordinate.
Absolute coordinate is build by ```latitude``` (degrees or radians), ```longitude``` (degrees or radians) and ```altitude``` (meters).
Example : create absolute coordinates.
```smalltalk
coord1 := AbsoluteCoordinates latitudeInDegrees: 48.3897 longitudeInDegrees: -4.48333 altitudeInMeters: 52. "Brest french city position"
coord2 := AbsoluteCoordinates latitudeInDegrees: 48.8667 longitudeInDegrees: 2.33333 altitudeInMeters: 79. "Paris french city position"
```
### Cartesian coordinates
Use ```CartesianCoordinates``` to store a cartesian coordinate.
Cartesian coordinate is build by ```x``` (meters), ```y``` (meters) and ```z``` (meters).
Example : create cartesian coordinates.
```smalltalk
coord := CartesianCoordinates xInMeters: 2 yInMeters: 5 zInMeters: 1.
```
### Polar coordinates
Use ```PolarCoordinates``` to store a polar coordinate.
Polar coordinate is build by ```azimuth``` (radians), ```distance``` (meters) and ```elevation``` (meters).
Example : create polar coordinates.
```smalltalk
coord := PolarCoordinates azimuthInRadians: 0 distanceInMeters: 50 elevationInMeters: 20.
```
Convert a polar coordinate into cartesian coordinates.
```smalltalk
polarCoord := PolarCoordinates zero. "This constructor create a polar coordinates initialized at zero point"
cartCoord := polarCoord asCartesianCoordinates.
```
### Common coordinates features
To know if a coordinate is valid :
```smalltalk
coord isValid.
```
To know if a coordinate is empty :
```smalltalk
coord isEmpty.
```
There are a lot of functionnaly to discover.
## Kinematics tools
Use ```Kinematics``` to store informations on ```course``` (direction in degrees or radians), ```speed``` (m/s, knots) and ```heading``` (orientation in degrees or radians).
Example : create kinematics information.
```smalltalk
kin := Kinematics new.
kin groundSpeedInMetersPerSeconds: 50.
kin courseInDegrees: 180.
kin headingInDegrees: 2.
```
## Map projection
### Geodesic Utilities class
Use ```GeodesicUtilities``` to compute angle and distance between Geodesic (lat/long) coordinates, taking in account the earth curve.
```smalltalk
"Brest french city position"
coord1 := AbsoluteCoordinates latitudeInDegrees: 48.3897 longitudeInDegrees: -4.48333 altitudeInMeters: 52.
"Paris french city position"
coord2 := AbsoluteCoordinates latitudeInDegrees: 48.8667 longitudeInDegrees: 2.33333 altitudeInMeters: 79.
"Return an azimuth in Radians between the positions of these two cities depending Earth curve"
GeodesicUtilities convertGeodesicToAzimuthInRadiansFrom: coord1 to: coord2.
```
## Installation
To install GeoTools on your Pharo image you can just execute the following script:
```smalltalk
Metacello new
baseline: 'GeoTools';
repository: 'github://OpenSmock/GeoTools:main';
load.
```
## Dependencies
- [Units](https://github.com/zweidenker/Units)