There are 3 modules
- Geometry
- Drawing
- Application
Geometry is responsible for all the vector shapes and knows how to represent any shape in the Cartesian coordinate system. Actually it means that geometry represents vectors and does not care about pixel representation
Drawing is about pixels and how to represent any vector shape on a pixel field There are 3 packages
- pixel contains pixel itself and array of pixel on a surface
- drawable knows how to draw any vector shape on a pixel layer
- filling there is a requirement to fill an area. But it is not a vector operation and must be performed on rasterized field Canvas just an aggregation root (or endpoint) for all operations that allows an application to manipulate with a picture
Application Represents the application itself and contains of
- commands that represent some actions that manipulate the picture. E.x. Add line, fill area and so on
- pixel represent a border for pixel layer. it is not a part of domain language and exists only because of the application. Therefore it is inside application package
###Dependencies Geometry <- Drawable <- Application
It means that Geometry is domain core of the application and does not aware neighbours. Drawable is also part of domain core, but it is aware of geometry, but does not aware of application
The track of ADRs might be found inside adr folder
to compile it you need JDK at least 1.8. But also tested on JDK 12.
Build - ./gradlew build
Run - ./gradlew shadowJar && java -jar build/libs/drawing-all.jar
You're given the task of writing a simple console version of a drawing program. At this time, the functionality of the program is quite limited but this might change in the future. In a nutshell, the program should work as follows:
- Create a new canvas
- Start drawing on the canvas by issuing various commands
- Quit
Command Description
C w h Should create a new canvas of width w and height h.
L x1 y1 x2 y2 Should create a new line from (x1,y1) to (x2,y2). Currently only
horizontal or vertical lines are supported. Horizontal and
vertical lines will be drawn using the 'x' character.
R x1 y1 x2 y2 Should create a new rectangle, whose upper left corner is (x1,y1)
and lower right corner is (x2,y2). Horizontal and vertical lines
will be drawn using the 'x' character.
B x y c Should fill the entire area connected to (x,y) with "colour" c. The
behavior of this is the same as that of the "bucket fill" tool in
paint programs.
Q Should quit the program.
Sample I/O
Below is a sample run of the program. User input is prefixed with enter command:
enter command: C 20 4
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| |
| |
| |
| |
----------------------
enter command: L 1 2 6 2
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| |
|xxxxxx |
| |
| |
----------------------
enter command: L 6 3 6 4
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| |
|xxxxxx |
| x |
| x |
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enter command: R 14 1 18 3
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| xxxxx |
|xxxxxx x x |
| x xxxxx |
| x |
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enter command: B 10 3 o
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|oooooooooooooxxxxxoo|
|xxxxxxooooooox xoo|
| xoooooooxxxxxoo|
| xoooooooooooooo|
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enter command: Q