地球磁気圏などの３次元シミュレーション結果をよりよく理解するためには、 ３次元可視化は不可欠である。ここに、インターネット３次元可視化のための 国際標準言語VRML（Virtual Reality Modeling Language）の登場のよって、 ３次元画像処理専用機と３次元画像処理専用ソフトウエアを持たなくても、 VRMLファイルとVRMLのビューア（cosmoplayerなど）さえあれば誰でも３次元画 像を自分の好きなよ うに見ることができるようになった。そのVRML３次元画像ファイルをFortran によって作成する方法と例題、及びVRMLコンテンツ作成用のインターフェース サブルーチンパッケージを示す。
1.基本的な例題1
| No. | Contents | Fortran Program | VRML file | gif file |
| サブルーチンパッケージ | pk1subrtn.f | |||
| 1 | 立方体 | box1.f | box1.wrl | box1.gif |
| 2 | 直方体 | box2.f | box2.wrl | box2.gif |
| 3 | 三角柱 | cone1.f | cone1.wrl | cone1.gif |
| 4 | 円柱 | cylinder1.f | cylinder1.wrl | cylinder1.gif |
| 5 | 球 | sphere1.f | sphere1.wrl | sphere1.gif |
| 6 | 背景色 | backgrd4.f | backgrd4.wrl | backgrd4.gif |
| 7 | 文字列 | text1.f | text1.wrl | text1.gif |
| 8 | 折れ線 １色 | lineset1.f | lineset1.wrl | lineset1.gif |
| 9 | 折れ線 グラデーション | lineset2.f | lineset2.wrl | lineset2.gif |
| 10 | 点線 １色 | pointset1.f | pointset1.wrl | pointset1.gif |
| 11 | 点線 グラデーション | pointset2.f | pointset2.wrl | pointset2.gif |
| 12 | 太い矢印 | arrow2.f | arrow2.wrl | arrow2.gif |
| 13 | 太さのある曲線 | linemesh1.f | linemesh1.wrl | linemesh1.gif |
| 14 | 面1 | mesh1.f | mesh1.wrl | mesh1.gif |
| 15 | 面2 | triangb1.f | triangb1.wrl | triangb1.gif |
| 16 | 面3 | triangm1.f | triangm1.wrl | triangm1.gif |
| 17 | 立体 | defusem1.f | defusem1.wrl | defusem1.gif |
| 18 | テクスチャ画像の貼りつけ | image1.f | image1.wrl | image1.gif |
| 19 | 複雑な表面 | ebmesh3d.f | ebmesh3d.wrl | ebmesh3d.gif |
2.基本的な例題2
| No. | Contents | Fortran Program | VRML file | gif file | jpg file | rgb file |
| サブルーチンパッケージ | zvrsuba.f |
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| 1 | 文字を描く | msymbol.f | msymbol.wrl | msymbol.gif | ||
| 2 | 点を描く | mpoint.f | mpoint.wrl | mpoint.gif | ||
| 3 | 線を描く | mline.f | mline.wrl | mline.gif | ||
| 4 | 三角メッシュを描く | mtriangm.f | mtriangm.wrl | mtriangm.gif | mtriangm.jpg | mtriangm.rgb |
| 5 | ピクセルイメージを描く | mzpt03.f | mzpt03.wrl | mzpt03.gif | mzpt03.jpg | mzpt03.rgb |
| 6 | 枠とピクセルイメージと文字を描く | mpixe015.f | mpixe015.wrl | mpixe015.gif | mpixe015.jpg | mpixe015.rgb |
| 7 | 等値面を描く | mcube301.f | mcube301.wrl | mcube301.gif | mcube301.jpg | mcube301.rgb |
| 8 | 外部磁気圏の３次元格子 | outline3d.f | outline3d.wrl | outline3d.gif | outline3d.jpg | |
| 9 | 内部磁気圏の３次元格子 | inline3d.f | inline3d.wrl | inline3d.gif | inline3d.jpg | |
| 10 | 電離圏の３次元格子 | denine3d.f | denline3d.wrl | denline3d.gif | denline3d.jpg |
3.応用
| No. | Contents | Fortran Program | VRML file | gif file |
| サブルーチンパッケージ | zvrsuba.f | |||
| 1 | 地球磁気圏のプラズマ温度などの断面図をピクセルイメージで描く | zvrcroa.f | zvrcroa.wrl | zvrcroa.gif |
| 2 | 地球磁気圏の3次元構造を描く | zvrmaga.f | zvrmaga.wrl | zvrmaga.gif |
| 3 | ピクセルイメージと磁力線の３次元画像の合成 | zvr01.wrl | zvr01.gif | |
| サブルーチンパッケージ | zvrsuba.f | |||
| 4 | 地球磁気圏のプラズマ温度分布を多重ピクセル面イメージを使って描く | zvrmpxa.f | fa410zx.wrl fa410yz.wrl fa410xy.wrl fa410xyz.wrl |
fa410zx.gif fa410yz.gif fa410xy.gif fa410xyz.gif |
4.3-Dimensional MHD Simulation of Earth's Magnetosphere (Example to execute the MHD Code and Graphic programs)
| No. | Contents | Fortran Main Program | Subroutine Package | PostScript file | VRML file or gif file |
| 3D MHD simulation of 1/4 earth's magnetosphere | earthb10.f | ||||
| Graphics program to make PostScript files | |||||
| 1 | noon-midnight meridian and equatorial plots (black and white) | gm150b.f | gsub150.f | gm150b.ps | gm150b.gif |
| 2 | energy distribution of cross section | gm220b.f | gsub220.f | gm220b.ps | gm220b.gif |
| 3 | 3-dimensional magnetic field lines | gm480b.f | gsub480.f | gm480b.ps | gm480b.gif |
| 3-dimensional graphics program by VRML files (Virtual Reality Modeling Language) | |||||
| 1 | 3-dimensional magnetic field lines | zvrmagb.f | zvrsuba.f | zvrml1b.wrl zvrml1b.jpg |
|
| 2 | cross sectional pattern by pixel image | zvrcrob.f | zvrsubb.f | ||
5.Visualization to Various 3-dimensional MHD Models of Earth's Magnetosphere
5-a. Half volume model of earth's magnetosphere with IMF By and Bz components
| No. | Contents | Fortran Main Program | VRML file | gif file |
| Subroutine Package | zvrsuba.f | |||
| 1 | 3-dimensional magnetic field lines | zvrmaga.f | fa410w.wrl | fa410w.gif fa410s.gif |
| 2 | cross sectional pattern by pixel image | zvrcroa.f | ||
| 3 | cross sectional pattern by velocity vectors | zvrvela.f | ||
| 4 | 3-dimensional pixel image with multi-planes | zvrmpxa.f | fa410xyz.wrl fa410yz.wrl |
fa410xyz.gif fa410yz.gif |
5-b. Quarter volume model of earth's magnetosphere
| No. | Contents | Fortran Main Program | VRML file | gif file |
| Subroutine Package | zvrsubb.f | |||
| 1 | 3-dimensional magnetic field lines | zvrmagb.f | fb240w.wrl fbq240w.wrl |
fb240w.gif fb240s.gif fbq240w.gif fbq240s.gif |
| 2 | cross sectional pattern by pixel image | zvrcrob.f zvrcrobq.f |
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| 3 | cross sectional pattern by velocity vectors | zvrvelb.f zvrvelbq.f |
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| 4 | 3-dimensional pixel image with multi-planes | zvrmpxb.f | fb240xyz.wrl fb240yz.wrl |
fb240xyz.gif fb240yz.gif |
5-c. Half volume model of earth's magnetosphere with dipole tilt
| No. | Contents | Fortran Main Program | VRML file | gif file |
| Subroutine Package | zvrsubc.f | |||
| 1 | 3-dimensional magnetic field lines | zvrmagc.f | fc360w.wrl | fc360w.gif fc360s.gif |
| 2 | cross sectional pattern by pixel image | zvrcroc.f | ||
| 3 | cross sectional pattern by velocity vectors | zvrvelc.f | ||
| 4 | 3-dimensional pixel image with multi-planes | zvrmpxc.f | fc360xyz.wrl fc360yz.wrl |
fc360xyz.gif fc360yz.gif |
5-d. Whole volume model of earth's magnetosphere
| No. | Contents | Fortran Main Program | VRML file | gif file |
| Subroutine Package | zvrsubd.f | |||
| 1 | 3-dimensional magnetic field lines | zvrmagd.f | fde180w.wrl | fde180w.gif fde180s.gif |
| 2 | cross sectional pattern by pixel image | zvrcrod.f | ||
| 3 | cross sectional pattern by velocity vectors | zvrveld.f | ||
| 4 | 3-dimensional pixel image with multi-planes | zvrmpxd.f | fde180xyz.wrl fde180yz.wrl |
fde180xyz.gif fde180yz.gif |
6.Application of VRML to 3-dimensional MHD Models of Earth's Magnetosphere
6-a. 3-dimensional visualization of earth’s magnetosphere with multiple planes
| No. | Contents | Fortran Main Program | VRML file | gif file |
| Subroutine Package | zvrsubd.f | |||
| 1 | 3-dimensional magnetic field lines | zvrmagd.f | zvrmagdc2.idd1i540.wrl | zvrmagdc2.idd1i540.gif |
| 2 | Plasma velocity vectors in cross section | zvrveld.f | zvrveldc.idd1i540.wrl | zvrveldc.idd1i540.gif |
| 3 | Pixel image of plasma temperate with multiple planes | zvrmpxdc5.f | .pxd4.idd1i540.wrl | pxd4.idd1i540.gif |
| 4 | Synthesis image with multiple planes in three directions | pxd4mdc2v.idd1i540.wrl | pxd4mdc2v.idd1i540.gif |
6-b. 3-dimensional visualization of earth’s magnetosphere with equivalence planes
| No. | Contents | Fortran Main Program | Subroutine Program | VRNL file |
| 1 | 3-dimensional magnetic field lines | zvrmagd.f | zvrsubd.f | zvrmagdc2.idd1n720.wrl |
| 2 | Plasma velocity vectors in cross section | zvrveld.f | zvrsubd.f | zvrveldc.idd1n720.wrl |
| 3 | 3-dimensional visualization with equivalence planes | mcubvrm.f | mcubsub.f | mcub.idd1n720.wrl |
| 4 | Synthesis image with multiple planes in three directions | mcubdc2v.idd1n720.wrl |
6-c. Cropping of 3-dimensional data
| No. | Contents | Fortran Main Program | Subroutine Program | VRNL file |
| 1 | cropping of 3-dimensional data | mbikxyz.f |
