B4J Tutorial Galaxy

Johan Schoeman · Dec 27, 2022

Not to scale but all planets as well as the sun rotating on their respective axis's at the same rate (for now) - a 3D view of all of the planets and the sun (have included Pluto)

Download it from here - too big a zip to upload:

Mostly done with JavaObject - sample code (images used from various places on the web):

B4J:

#Region  Project Attributes
    #MainFormWidth: 800
    #MainFormHeight: 800
#End Region

Sub Process_Globals
    Private fx As JFX
    Private MainForm As Form
    Dim ips1, ips2, ips3, ips4 As InputStream
    Dim rotspeed As Double = 0
   
    Dim earth, sphereEarth As JavaObject
    Dim sun, sphereSun As JavaObject
    Dim mercury, sphereMercury As JavaObject
    Dim venus, sphereVenus As JavaObject
    Dim moon, sphereMoon As JavaObject
    Dim mars, sphereMars As JavaObject
    Dim jupiter, sphereJupiter As JavaObject
    Dim saturn, sphereSaturn As JavaObject
    Dim uranus, sphereUranus As JavaObject
    Dim neptune, sphereNeptune As JavaObject
    Dim pluto, spherePluto As JavaObject
   
    Dim lft, tp, wdth, hght As Int
   
    Dim t As Timer

End Sub

Sub AppStart (Form1 As Form, Args() As String)
    MainForm = Form1
   
    t.Initialize("t", 100)

    MainForm.Initialize("frm", fx.PrimaryScreen.MaxX - fx.PrimaryScreen.MinX, fx.PrimaryScreen.MaxY - fx.PrimaryScreen.MinY)
    MainForm.WindowWidth = fx.PrimaryScreen.MaxX - fx.PrimaryScreen.MinX           'set the screen to full width/height
    MainForm.WindowLeft = fx.PrimaryScreen.MinX
    MainForm.WindowHeight = fx.PrimaryScreen.MaxY - fx.PrimaryScreen.MinY
    MainForm.WindowTop = fx.PrimaryScreen.MinY
   
    MainForm.RootPane.LoadLayout("main")
    MainForm.Show
    Sleep(0)

    addSun
    Sleep(0)
    addMercury
    Sleep(0)
    addVenus
    Sleep(0)
    addEarth
    Sleep(0)
    addMoon
    Sleep(0)
    addMars
    Sleep(0)
    addJupiter
    Sleep(0)
    addSaturn
    Sleep(0)
    addUranus
    Sleep(0)
    addNeptune
    Sleep(0)
    addPluto
    Sleep(0)
   
   
    t.Enabled = True

End Sub

Sub t_tick
   
    rotspeed = -0.84
    Dim pos As Double = sphereSun.RunMethod("getRotate", Null)
    rotspeed = rotspeed + pos
    sphereSun.RunMethodJO("rotateProperty", Null).RunMethodJO("set", Array(rotspeed))
    sphereMercury.RunMethodJO("rotateProperty", Null).RunMethodJO("set", Array(rotspeed))
    sphereVenus.RunMethodJO("rotateProperty", Null).RunMethodJO("set", Array(rotspeed))
    sphereEarth.RunMethodJO("rotateProperty", Null).RunMethodJO("set", Array(rotspeed))
    sphereMoon.RunMethodJO("rotateProperty", Null).RunMethodJO("set", Array(rotspeed))
    sphereMars.RunMethodJO("rotateProperty", Null).RunMethodJO("set", Array(rotspeed))
    sphereJupiter.RunMethodJO("rotateProperty", Null).RunMethodJO("set", Array(rotspeed))
    sphereSaturn.RunMethodJO("rotateProperty", Null).RunMethodJO("set", Array(rotspeed))
    sphereUranus.RunMethodJO("rotateProperty", Null).RunMethodJO("set", Array(rotspeed))
    sphereNeptune.RunMethodJO("rotateProperty", Null).RunMethodJO("set", Array(rotspeed))
    spherePluto.RunMethodJO("rotateProperty", Null).RunMethodJO("set", Array(rotspeed))
    Sleep(0)
   
End Sub

Sub addSun
   
    Dim diam As Double = 100.0dip
   
    sphereSun.InitializeNewInstance("javafx.scene.shape.Sphere", Array(diam))
    sun.InitializeNewInstance("javafx.scene.Group", Null)

    ips1 = File.OpenInput(File.DirAssets, "sun.jfif")

   
    Dim image1 As JavaObject
    image1.InitializeNewInstance("javafx.scene.image.Image", Array(ips1))
   

    Dim sunMaterial As JavaObject
    sunMaterial.InitializeNewInstance("javafx.scene.paint.PhongMaterial", Null)

    sunMaterial.RunMethodJO("setDiffuseMap", Array(image1))
   
    Dim rot As JavaObject
    rot.InitializeStatic("javafx.scene.transform.Rotate")
   
    sphereSun.RunMethodJO("setRotationAxis", Array(rot.GetField("Y_AXIS")))
    sphereSun.RunMethodJO("setMaterial", Array(sunMaterial))

    sun.RunMethodJO("getChildren", Null).RunMethodJO("add", Array(sphereSun))
   
    lft = 20dip
    tp = MainForm.WindowHeight - (3 * diam)
    wdth = diam
    hght = diam
   
    MainForm.RootPane.AddNode(sun, lft,tp, wdth, hght)

End Sub

Sub addMercury
   
    Dim diam As Double = 25.0dip
   
    sphereMercury.InitializeNewInstance("javafx.scene.shape.Sphere", Array(diam))
    mercury.InitializeNewInstance("javafx.scene.Group", Null)

    ips1 = File.OpenInput(File.DirAssets, "mercury5.jfif")
   
    Dim image1 As JavaObject
    image1.InitializeNewInstance("javafx.scene.image.Image", Array(ips1))

    Dim mercuryMaterial As JavaObject
    mercuryMaterial.InitializeNewInstance("javafx.scene.paint.PhongMaterial", Null)

    mercuryMaterial.RunMethodJO("setDiffuseMap", Array(image1))
   
    Dim rot As JavaObject
    rot.InitializeStatic("javafx.scene.transform.Rotate")
   
    sphereMercury.RunMethodJO("setRotationAxis", Array(rot.GetField("Y_AXIS")))
    sphereMercury.RunMethodJO("setMaterial", Array(mercuryMaterial))

    mercury.RunMethodJO("getChildren", Null).RunMethodJO("add", Array(sphereMercury))
   
    lft = lft + 250dip
    tp = tp - 5dip
    wdth = diam
    hght = diam
   
    MainForm.RootPane.AddNode(mercury, lft, tp, wdth, hght)

End Sub

Sub addVenus
   
    Dim diam As Double = 25.0dip
   
    sphereVenus.InitializeNewInstance("javafx.scene.shape.Sphere", Array(diam))
    venus.InitializeNewInstance("javafx.scene.Group", Null)

    ips1 = File.OpenInput(File.DirAssets, "venus2.jfif")
   
    Dim image1 As JavaObject
    image1.InitializeNewInstance("javafx.scene.image.Image", Array(ips1))

    Dim venusMaterial As JavaObject
    venusMaterial.InitializeNewInstance("javafx.scene.paint.PhongMaterial", Null)

    venusMaterial.RunMethodJO("setDiffuseMap", Array(image1))
   
    Dim rot As JavaObject
    rot.InitializeStatic("javafx.scene.transform.Rotate")
   
    sphereVenus.RunMethodJO("setRotationAxis", Array(rot.GetField("Y_AXIS")))
    sphereVenus.RunMethodJO("setMaterial", Array(venusMaterial))

    venus.RunMethodJO("getChildren", Null).RunMethodJO("add", Array(sphereVenus))
   
    lft = lft + 100dip
    tp = tp - 15dip
    wdth = diam
    hght = diam
   
    MainForm.RootPane.AddNode(venus, lft, tp, wdth, hght)

End Sub

Sub addEarth
   
    Dim diam As Double = 50.0dip
   
    sphereEarth.InitializeNewInstance("javafx.scene.shape.Sphere", Array(diam))
    earth.InitializeNewInstance("javafx.scene.Group", Null)

    ips1 = File.OpenInput(File.DirAssets, "earth-d.jpg")
    ips2 = File.OpenInput(File.DirAssets, "earth-l.jpg")
    ips3 = File.OpenInput(File.DirAssets, "earth-s.jpg")
    ips4 = File.OpenInput(File.DirAssets, "earth-n.jpg")

   
    Dim image1 As JavaObject
    image1.InitializeNewInstance("javafx.scene.image.Image", Array(ips1))
    Dim image2 As JavaObject
    image2.InitializeNewInstance("javafx.scene.image.Image", Array(ips2))
    Dim image3 As JavaObject
    image3.InitializeNewInstance("javafx.scene.image.Image", Array(ips3))
    Dim image4 As JavaObject
    image4.InitializeNewInstance("javafx.scene.image.Image", Array(ips4))
   

    Dim earthMaterial As JavaObject
    earthMaterial.InitializeNewInstance("javafx.scene.paint.PhongMaterial", Null)

    earthMaterial.RunMethodJO("setDiffuseMap", Array(image1))
    earthMaterial.RunMethodJO("setSelfIlluminationMap", Array(image2))
    earthMaterial.RunMethodJO("setSpecularMap", Array(image3))
    earthMaterial.RunMethodJO("setBumpMap", Array(image4))
   
    Dim rot As JavaObject
    rot.InitializeStatic("javafx.scene.transform.Rotate")
   
    sphereEarth.RunMethodJO("setRotationAxis", Array(rot.GetField("Y_AXIS")))
    sphereEarth.RunMethodJO("setMaterial", Array(earthMaterial))

    earth.RunMethodJO("getChildren", Null).RunMethodJO("add", Array(sphereEarth))
   
    lft = lft + 100dip
    tp = tp - 70dip
    wdth = diam
    hght = diam
   
    MainForm.RootPane.AddNode(earth, lft, tp, wdth, hght)

End Sub

Sub addMoon
   
    Dim diam As Double = 15.0dip
   
    sphereMoon.InitializeNewInstance("javafx.scene.shape.Sphere", Array(diam))
    moon.InitializeNewInstance("javafx.scene.Group", Null)

    ips1 = File.OpenInput(File.DirAssets, "moon.jfif")
   
    Dim image1 As JavaObject
    image1.InitializeNewInstance("javafx.scene.image.Image", Array(ips1))
   
    Dim moonMaterial As JavaObject
    moonMaterial.InitializeNewInstance("javafx.scene.paint.PhongMaterial", Null)

    moonMaterial.RunMethodJO("setDiffuseMap", Array(image1))
   
    Dim rot As JavaObject
    rot.InitializeStatic("javafx.scene.transform.Rotate")
   
    sphereMoon.RunMethodJO("setRotationAxis", Array(rot.GetField("Y_AXIS")))
    sphereMoon.RunMethodJO("setMaterial", Array(moonMaterial))

    moon.RunMethodJO("getChildren", Null).RunMethodJO("add", Array(sphereMoon))
   
    lft = lft + 0dip
    tp = tp - 30dip
    wdth = diam
    hght = diam
   
    MainForm.RootPane.AddNode(moon, lft, tp, wdth, hght)

End Sub

Sub addMars
   
    Dim diam As Double = 35.0dip
   
    sphereMars.InitializeNewInstance("javafx.scene.shape.Sphere", Array(diam))
    mars.InitializeNewInstance("javafx.scene.Group", Null)

    ips1 = File.OpenInput(File.DirAssets, "mars1.jfif")
   
    Dim image1 As JavaObject
    image1.InitializeNewInstance("javafx.scene.image.Image", Array(ips1))
   
    Dim marsMaterial As JavaObject
    marsMaterial.InitializeNewInstance("javafx.scene.paint.PhongMaterial", Null)

    marsMaterial.RunMethodJO("setDiffuseMap", Array(image1))
   
    Dim rot As JavaObject
    rot.InitializeStatic("javafx.scene.transform.Rotate")
   
    sphereMars.RunMethodJO("setRotationAxis", Array(rot.GetField("Y_AXIS")))
    sphereMars.RunMethodJO("setMaterial", Array(marsMaterial))

    mars.RunMethodJO("getChildren", Null).RunMethodJO("add", Array(sphereMars))
   
    lft = lft + 150dip
    tp = tp - 30dip
    wdth = diam
    hght = diam
   
    MainForm.RootPane.AddNode(mars, lft, tp, wdth, hght)

End Sub

Sub addJupiter
   
    Dim diam As Double = 50.0dip
   
    sphereJupiter.InitializeNewInstance("javafx.scene.shape.Sphere", Array(diam))
    jupiter.InitializeNewInstance("javafx.scene.Group", Null)

    ips1 = File.OpenInput(File.DirAssets, "jupiter4.jfif")
   
    Dim image1 As JavaObject
    image1.InitializeNewInstance("javafx.scene.image.Image", Array(ips1))
   
    Dim jupiterMaterial As JavaObject
    jupiterMaterial.InitializeNewInstance("javafx.scene.paint.PhongMaterial", Null)

    jupiterMaterial.RunMethodJO("setDiffuseMap", Array(image1))
   
    Dim rot As JavaObject
    rot.InitializeStatic("javafx.scene.transform.Rotate")
   
    sphereJupiter.RunMethodJO("setRotationAxis", Array(rot.GetField("Y_AXIS")))
    sphereJupiter.RunMethodJO("setMaterial", Array(jupiterMaterial))

    jupiter.RunMethodJO("getChildren", Null).RunMethodJO("add", Array(sphereJupiter))
   
    lft = lft + 120dip
    tp = tp - 50dip
    wdth = diam
    hght = diam
   
    MainForm.RootPane.AddNode(jupiter, lft, tp, wdth, hght)

End Sub

Sub addSaturn
   
    Dim diam As Double = 60.0dip
   
    sphereSaturn.InitializeNewInstance("javafx.scene.shape.Sphere", Array(diam))
    saturn.InitializeNewInstance("javafx.scene.Group", Null)

    ips1 = File.OpenInput(File.DirAssets, "saturn3.jfif")
   
    Dim image1 As JavaObject
    image1.InitializeNewInstance("javafx.scene.image.Image", Array(ips1))
   
    Dim saturnMaterial As JavaObject
    saturnMaterial.InitializeNewInstance("javafx.scene.paint.PhongMaterial", Null)

    saturnMaterial.RunMethodJO("setDiffuseMap", Array(image1))
   
    Dim rot As JavaObject
    rot.InitializeStatic("javafx.scene.transform.Rotate")
   
    sphereSaturn.RunMethodJO("setRotationAxis", Array(rot.GetField("Y_AXIS")))
    sphereSaturn.RunMethodJO("setMaterial", Array(saturnMaterial))

    saturn.RunMethodJO("getChildren", Null).RunMethodJO("add", Array(sphereSaturn))
   
    lft = lft + 150dip
    tp = tp - 60dip
    wdth = diam
    hght = diam
   
    MainForm.RootPane.AddNode(saturn, lft, tp, wdth, hght)

End Sub

Sub addUranus
   
    Dim diam As Double = 60.0dip
   
    sphereUranus.InitializeNewInstance("javafx.scene.shape.Sphere", Array(diam))
    uranus.InitializeNewInstance("javafx.scene.Group", Null)

    ips1 = File.OpenInput(File.DirAssets, "uranus2.jfif")
   
    Dim image1 As JavaObject
    image1.InitializeNewInstance("javafx.scene.image.Image", Array(ips1))
   
    Dim uranusMaterial As JavaObject
    uranusMaterial.InitializeNewInstance("javafx.scene.paint.PhongMaterial", Null)

    uranusMaterial.RunMethodJO("setDiffuseMap", Array(image1))
   
    Dim rot As JavaObject
    rot.InitializeStatic("javafx.scene.transform.Rotate")
   
    sphereUranus.RunMethodJO("setRotationAxis", Array(rot.GetField("Y_AXIS")))
    sphereUranus.RunMethodJO("setMaterial", Array(uranusMaterial))

    uranus.RunMethodJO("getChildren", Null).RunMethodJO("add", Array(sphereUranus))
   
    lft = lft + 150dip
    tp = tp - 60dip
    wdth = diam
    hght = diam
   
    MainForm.RootPane.AddNode(uranus, lft, tp, wdth, hght)

End Sub

Sub addNeptune
   
    Dim diam As Double = 50.0dip
   
    sphereNeptune.InitializeNewInstance("javafx.scene.shape.Sphere", Array(diam))
    neptune.InitializeNewInstance("javafx.scene.Group", Null)

    ips1 = File.OpenInput(File.DirAssets, "neptune2.jfif")
   
    Dim image1 As JavaObject
    image1.InitializeNewInstance("javafx.scene.image.Image", Array(ips1))
   
    Dim neptuneMaterial As JavaObject
    neptuneMaterial.InitializeNewInstance("javafx.scene.paint.PhongMaterial", Null)

    neptuneMaterial.RunMethodJO("setDiffuseMap", Array(image1))
   
    Dim rot As JavaObject
    rot.InitializeStatic("javafx.scene.transform.Rotate")
   
    sphereNeptune.RunMethodJO("setRotationAxis", Array(rot.GetField("Y_AXIS")))
    sphereNeptune.RunMethodJO("setMaterial", Array(neptuneMaterial))

    neptune.RunMethodJO("getChildren", Null).RunMethodJO("add", Array(sphereNeptune))
   
    lft = lft + 150dip
    tp = tp - 60dip
    wdth = diam
    hght = diam
   
    MainForm.RootPane.AddNode(neptune, lft, tp, wdth, hght)

End Sub

Sub addPluto
   
    Dim diam As Double = 10.0dip
   
    spherePluto.InitializeNewInstance("javafx.scene.shape.Sphere", Array(diam))
    pluto.InitializeNewInstance("javafx.scene.Group", Null)

    ips1 = File.OpenInput(File.DirAssets, "pluto.jfif")
   
    Dim image1 As JavaObject
    image1.InitializeNewInstance("javafx.scene.image.Image", Array(ips1))
   
    Dim plutoMaterial As JavaObject
    plutoMaterial.InitializeNewInstance("javafx.scene.paint.PhongMaterial", Null)

    plutoMaterial.RunMethodJO("setDiffuseMap", Array(image1))
   
    Dim rot As JavaObject
    rot.InitializeStatic("javafx.scene.transform.Rotate")
   
    spherePluto.RunMethodJO("setRotationAxis", Array(rot.GetField("Y_AXIS")))
    spherePluto.RunMethodJO("setMaterial", Array(plutoMaterial))

    pluto.RunMethodJO("getChildren", Null).RunMethodJO("add", Array(spherePluto))
   
    lft = lft + 150dip
    tp = tp - 60dip
    wdth = diam
    hght = diam
   
    MainForm.RootPane.AddNode(pluto, lft, tp, wdth, hght)

End Sub

BlueVision · Dec 27, 2022

Love it!
But missed pluto... Discovered finally in the upper right corner. It needs some additional scaling somhow...

B4J Tutorial Galaxy

BlueVision

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B4J Tutorial Galaxy

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