Initial commit

Java/3DEngine/src/de/craftix/engine/Calculator.java

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+package de.craftix.engine;
+
+public class Calculator {
+
+    static double CalculatePositionX(double[] viewFrom, double[] viewTo, double x, double y, double z) {
+
+        return 0;
+    }
+
+    static double CalculatePositionY(double[] viewFrom, double[] viewTo, double x, double y, double z) {
+        setStuff(viewFrom, viewTo);
+        return 0;
+    }
+
+    static void setStuff(double[] viewFrom, double[] viewTo) {
+        Vector viewVector = new Vector(viewTo[0] - viewFrom[0], viewTo[1] - viewFrom[1], viewTo[1] - viewFrom[1]);
+
+
+    }
+
+}

Java/3DEngine/src/de/craftix/engine/Engine.java

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+package de.craftix.engine;
+
+import javax.swing.*;
+import java.awt.*;
+
+public class Engine extends JFrame {
+    private Screen screen = new Screen();
+
+    public Engine() {
+        setUndecorated(true);
+        setSize(Toolkit.getDefaultToolkit().getScreenSize());
+        add(screen);
+        setDefaultCloseOperation(EXIT_ON_CLOSE);
+        setVisible(true);
+    }
+
+}

Java/3DEngine/src/de/craftix/engine/Polygon3D.java

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+package de.craftix.engine;
+
+import java.awt.*;
+
+public class Polygon3D {
+    private Color c;
+    private double[] x, y, z;
+
+    public Polygon3D(double[] x, double[] y, double[] z, Color c) {
+        this.c = c;
+        this.x = x;
+        this.y = y;
+        this.z = z;
+        createPolygon();
+    }
+
+    void createPolygon() {
+        double[] newX = new double[x.length];
+        double[] newY = new double[y.length];
+        for (int i = 0; i < x.length; i++) {
+            newX[i] = Calculator.CalculatePositionX(Screen.viewFrom, Screen.viewTo, x[i], y[i], z[i]);
+            newY[i] = Calculator.CalculatePositionY(Screen.viewFrom, Screen.viewTo, x[i], y[i], z[i]);
+        }
+        Screen.polygons[Screen.numberOfPolygons] = new PolygonObject(newX, newY, c);
+    }
+
+}

Java/3DEngine/src/de/craftix/engine/PolygonObject.java

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+package de.craftix.engine;
+
+import java.awt.*;
+
+public class PolygonObject {
+    private Polygon p;
+    private Color c;
+
+    public PolygonObject(double[] x, double[] y, Color c) {
+        Screen.numberOfPolygons++;
+        this.c = c;
+        p = new Polygon();
+        for (int i = 0; i < x.length; i++) p.addPoint((int) x[i], (int) y[i]);
+    }
+
+    void  drawPolygon(Graphics g) {
+        g.setColor(c);
+        g.drawPolygon(p);
+    }
+
+}

Java/3DEngine/src/de/craftix/engine/Screen.java

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+package de.craftix.engine;
+
+import javax.swing.*;
+import java.awt.*;
+
+public class Screen extends JPanel {
+    static double[] viewFrom = new double[]{ 10, 10, 10 };
+    static double[] viewTo = new double[]{ 0, 0, 0 };
+
+    public static int numberOfPolygons = 0;
+    public static PolygonObject[] polygons = new PolygonObject[100];
+
+    Polygon3D poly3D;
+
+    public Screen() {
+        poly3D = new Polygon3D(new double[]{2, 4, 2}, new double[]{2, 4, 6}, new double[]{5, 5, 5}, Color.BLACK);
+    }
+
+    @Override
+    protected void paintComponent(Graphics g) {
+        super.paintComponent(g);
+
+        for (int i = 0; i < numberOfPolygons; i++) polygons[i].drawPolygon(g);
+    }
+}

Java/3DEngine/src/de/craftix/engine/Vector.java

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+package de.craftix.engine;
+
+public class Vector {
+    double x, y, z;
+
+    public Vector(double x, double y, double z) {
+        double length = Math.sqrt(x*x + y*y + z*z);
+        this.x = x / length;
+        this.y = y / length;
+        this.z = z / length;
+    }
+
+    Vector crossProduct(Vector v) {
+        return new Vector(
+                y * v.z - z * v.y,
+                z * v.x - x * v.z,
+                x * v.y - y * v.x
+        );
+    }
+
+}

Java/3DEngine/src/test/Main.java

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+package test;
+
+import de.craftix.engine.Engine;
+
+public class Main {
+
+    public static void main(String[] args) {
+        new Engine();
+    }
+
+}