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Open Hugrade

7 February 20217 March 2021 by ianovir

A humble graph designer for lazy people like me. Lately I finished fixing the source and “open sourced” it : ported to java15, jfx15 and modularized.

For more details see here. Of course available on GitHub.

CLIM for .NET core

8 December 20207 March 2021 by ianovir

Implemented the Command line interface menu (CLIM) for .NET core also. Available on Nuget and Github. Check it out here.
CLIM is an open source project.

CLIM on Android

19 November 20207 March 2021 by ianovir

This post shows a way to use the CLIM library inside an Android app.

The problem

We’d like to use a simple activity with an EditText (maybe multiline) as output and another EditText as input. Since the CLIM’s engine use Standard input/output streams as default, we need to implement our custom ones.

The Layout

The layout of our activity will consists on:

Multiline EditText etout as output
EditText etin as input
Button btnok to commit the input (equivalent to ENTER key)

The activity_main.xml :

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <EditText
        android:id="@+id/etout"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_marginStart="8dp"
        android:layout_marginEnd="8dp"
        android:gravity="top|left"
        android:inputType="textMultiLine"
        android:lines="200"
        android:minLines="10"
        android:scrollbars="vertical"
        app:layout_constraintBottom_toTopOf="@+id/etin"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        android:clickable="false"
        android:cursorVisible="false"
        android:focusable="false"
        android:focusableInTouchMode="false"
        />

    <EditText
        android:id="@+id/etin"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginBottom="8dp"
        android:ems="10"
        android:text=""
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toStartOf="@+id/btnok"
        app:layout_constraintStart_toStartOf="parent" />

    <Button
        android:id="@+id/btnok"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="8dp"
        android:layout_marginBottom="8dp"
        android:text="ok"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

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<?xml version="1.0" encoding="utf-8"?>

<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:app="http://schemas.android.com/apk/res-auto"

xmlns:tools="http://schemas.android.com/tools"

android:layout_width="match_parent"

android:layout_height="match_parent"

tools:context=".MainActivity">

<EditText

android:id="@+id/etout"

android:layout_width="match_parent"

android:layout_height="0dp"

android:layout_marginStart="8dp"

android:layout_marginEnd="8dp"

android:gravity="top|left"

android:inputType="textMultiLine"

android:lines="200"

android:minLines="10"

android:scrollbars="vertical"

app:layout_constraintBottom_toTopOf="@+id/etin"

app:layout_constraintEnd_toEndOf="parent"

app:layout_constraintStart_toStartOf="parent"

app:layout_constraintTop_toTopOf="parent"

android:clickable="false"

android:cursorVisible="false"

android:focusable="false"

android:focusableInTouchMode="false"

/>

<EditText

android:id="@+id/etin"

android:layout_width="0dp"

android:layout_height="wrap_content"

android:layout_marginStart="8dp"

android:layout_marginBottom="8dp"

android:ems="10"

android:text=""

app:layout_constraintBottom_toBottomOf="parent"

app:layout_constraintEnd_toStartOf="@+id/btnok"

app:layout_constraintStart_toStartOf="parent" />

<Button

android:id="@+id/btnok"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginEnd="8dp"

android:layout_marginBottom="8dp"

android:text="ok"

app:layout_constraintBottom_toBottomOf="parent"

app:layout_constraintEnd_toEndOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

CLIM dependency

First things first: let’s add dependancy to CLIM in the gradle project-level build.gradle :

allprojects {
    repositories {
        google()
        jcenter()
        maven {
            url  "https://dl.bintray.com/ianovir/CLIM"
        }
    }
}

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allprojects {

repositories {

google()

jcenter()

maven {

url "https://dl.bintray.com/ianovir/CLIM"

}

then the app-level build.gradle:

dependencies {
    ...
    implementation 'com.ianovir.clim:CLIM:1.1'

}

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dependencies {

...

implementation 'com.ianovir.clim:CLIM:1.1'

}

The Activity

Inside our activity we will prepare our CLIM engine:

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    launchClim();
}

private void launchClim() {
	Engine engine = new Engine("CLIM DEMO");
	Menu mainMenu = engine.buildMenu("Control Console");

	mainMenu.addEntry(new Entry("access security") {
		@Override
		public void onAction() {
		}
	});

	mainMenu.addEntry(new Entry("access security grid") {
		@Override
		public void onAction() {
		}
	});

	mainMenu.addEntry(new Entry("access main security grid") {
		@Override
		public void onAction() {
		}
	});

	//configure our custom streams:
	prepareStreams(engine);

	engine.addOnTop(mainMenu);
        engine.start();
}

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@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

launchClim();

}

private void launchClim() {

Engine engine = new Engine("CLIM DEMO");

Menu mainMenu = engine.buildMenu("Control Console");

mainMenu.addEntry(new Entry("access security") {

@Override

public void onAction() {

}

});

mainMenu.addEntry(new Entry("access security grid") {

@Override

public void onAction() {

}

});

mainMenu.addEntry(new Entry("access main security grid") {

@Override

public void onAction() {

}

});

//configure our custom streams:

prepareStreams(engine);

engine.addOnTop(mainMenu);

engine.start();

}

For an implementation with sense, please have a look at the Demo.java class.
We will see the body of prepareStreams(Engine engine) in the next section.

The Streams

Now, we need to implement our custom input and output streams to be linked to our EditTexts etin and etout respectively.

Let’s see the content of prepareStreams():

private void prepareStreams(Engine engine) {

	final EditText outputText = findViewById(R.id.etout);
	final OutputStream out = new OutputStream(){
		@Override
		public void open() {}

		@Override
		public void close() {}

		@Override
		public void onOutput(final String s) {
			runOnUiThread(new Runnable() {
				@Override
				public void run() {
					outputText.append("\n"+ s);
				}
			});
		}
	};

	TextInputStream in = new TextInputStream(engine,
			(EditText) findViewById(R.id.etin),
			(Button) findViewById(R.id.btnok),
			out);

	engine.setInputStream(in);
	engine.setOutStream(out);
}

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private void prepareStreams(Engine engine) {

final EditText outputText = findViewById(R.id.etout);

final OutputStream out = new OutputStream(){

@Override

public void open() {}

@Override

public void close() {}

@Override

public void onOutput(final String s) {

runOnUiThread(new Runnable() {

@Override

public void run() {

outputText.append("\n"+ s);

}

});

}

};

TextInputStream in = new TextInputStream(engine,

(EditText) findViewById(R.id.etin),

(Button) findViewById(R.id.btnok),

out);

engine.setInputStream(in);

engine.setOutStream(out);

}

As you can see, the implementation of the OutputStream is quite simple, since we will redirect the input string to the output EditText (in the UI thread, of course).

The TextInputStream needs some extra considerations:

public class TextInputStream extends InputStream {
    private final EditText et;
    private final Button btn;
    private final OutputStream outs;
    private String lastContent;

    public TextInputStream(Engine subscriber, EditText et, Button commit, OutputStream outs) {
        super(subscriber);
        this.et = et;
        this.btn = commit;
        this.outs = outs;

        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                setLastContent(TextInputStream.this.et.getText().toString());
                TextInputStream.this.outs.onOutput(TextInputStream.this.et.getText().toString());
                TextInputStream.this.et.setText("");
            }
        });
    }

    @Override
    public String forceRead() {
        String ret = null;        
        //we can do this, since we're on another thread
        while(getLastContent()==null){
        }        
        ret = lastContent;
        setLastContent(null);
        return ret;
    }

    private synchronized String getLastContent() {
        return lastContent;
    }

    private synchronized void setLastContent(String lastContent) {
        this.lastContent = lastContent;
    }

    @Override
    public void close() {
        super.close();

    }
}

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public class TextInputStream extends InputStream {

private final EditText et;

private final Button btn;

private final OutputStream outs;

private String lastContent;

public TextInputStream(Engine subscriber, EditText et, Button commit, OutputStream outs) {

super(subscriber);

this.et = et;

this.btn = commit;

this.outs = outs;

btn.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

setLastContent(TextInputStream.this.et.getText().toString());

TextInputStream.this.outs.onOutput(TextInputStream.this.et.getText().toString());

TextInputStream.this.et.setText("");

}

});

}

@Override

public String forceRead() {

String ret = null;

//we can do this, since we're on another thread

while(getLastContent()==null){

}

ret = lastContent;

setLastContent(null);

return ret;

}

private synchronized String getLastContent() {

return lastContent;

}

private synchronized void setLastContent(String lastContent) {

this.lastContent = lastContent;

}

@Override

public void close() {

super.close();

}

You can notice that the TextInputStream take the engine as the main subscriber and saves to lastContent the inputted text. The access to lastContent is managed by two synchronized methods (getLastContent() and setLastContent(…)). Finally, notice that the forceRead() method is called inside a dedicated Thread from the parent class InputStream, so it is safe to use that while loop inside.

Result

Let’s watch and enjoy our app (using the engine as in Demo.java) :

CLIM

15 November 20208 December 2020 by ianovir

Command line interface menu (CLIM) engine for JVM offers a very simple system to manage UI menus via the cli. It may be useful when prototyping core libraries in their early stage, in absence of advanced GUI yet.

CLIM is an open source project.
Check it out on Github

Expressionless self-portrait

15 November 202017 November 2020 by ianovir

ZBrush brushes available

4 October 202017 November 2020 by ianovir

I was “cleaning out the shelves” when I found some interesting stuffs I made in the past while learning/using ZBrush. Why not to share them?
Here they are, available on my Artstation and Gumroad pages!

Generic hair masses brush
Basic braid brush
Engine Lines IMM brush
Wires and pipes IMM brush

Some art stuff

24 September 202020 November 2020 by ianovir

Making some art for the site. Often I forget how comforting can be… just drawing!

Prosa’s March

9 August 202020 November 2020 by ianovir

The Probability Solver of Absorbing States in Markov Chain is my solution for an online programming game. The simple code in this repository provides a method to compute probabilities for the absorbing states in a given Markov chain. The code is available on GitHub.

Hyper Gyro

5 July 202020 November 2020 by ianovir

Well, often it’s so difficult to read the instruction booklet of something before using it. This is the reason I made the new app Hyper Gyro!

Since some gamers can’t lose their precious time to understand the purpose of an app like HyperIMU nor the effort made by its developer, I made what they wished for: a simple rotating wheel spinning in the background.
No settings, no protocols, no problemos…

I guess this is an example of a manufacturer that meets the “needs” of the market…

I will ask for Hyper Gyro to be included in the next Android release as system app, together with their favourite multiplayer game maybe.