EE563GraphicsAndVisualisation

Java2D

Functions
- Interpretation 解释(输入)
  - Image file format图像文件的数据结构
    - Header 头信息
      - 大小(pixels)
        
        Width长
        
        Height高
      - Compression scheme 压缩方案
      - Colour Palette调色板(图像颜色信息的编码索引)
      - resolution 分辨率
    - Data 图像数据信息
- Manipulation 操作(编辑)
- Display 显示(输出)
JDK
- SWT
  - Graphics
    - void setColor(Color c)
    - void drawOval(int x, int y, int width, int height)
    - void drawRect(int x, int y, int width, int height)
    - void drawString(String str, int x, int y)
    - boolean drawImage(Image img, int x, int y, ImageObserver obs)
  - Image
    - int getWidth(ImageObserver observer)
    - int getHeight(ImageObserver observer)
    - Graphics getGraphics()
    - Toolkit.getDefaultToolkit().createImage(”image.jpg”);
  - Processing
    - MemoryImageSource data = new MemoryImageSource(width, height, pixels,0,width);
    - i = Toolkit.getDefaultToolkit (). createImage(data);
  - Defining Colours
    - Color(float r, float g, float b, float a)
    - Color(int r, int g, int b, int a)
    - a:alpha 透明度,数值越大越不透明
- 2D
  - Graphics
    - Control
      - Geometry 各种几何图形
      - Coordinate transformations 图形转换
      - Colour management 颜色管理
      - Text layout 文字层
    - anti-aliasing feature 像素模糊化
      - setRenderingHint(key,value)
      - key
        
        RenderingHints.KEY_ANTIALIASING
      - value
        
        RenderingHints.VALUE_ANTIALIAS_ON
        
        RenderingHints.VALUE_ANTIALIAS_OFF
        
        RenderingHints.VALUE_ANTIALIAS_DEFAULT
    - BufferedImage
      - void setRenderingHint(RenderingHints.Key key, Object value)
      - void scale(double sx, double sy)
      - void rotate(double theta)
      - void translate(double tx, double ty)
  - Image
    - BufferedImage(int width, int height, int imageType)
      - Type
        
        TYPE BYTE BINARY
        
        TYPE INT ARGB
        
        TYPE INT RGB
    - Process
      - int getRGB(int x, int y)
      - void setRGB(int x, int y, int rgb)
      - BufferedImage getSubImage(int x, int y, int w, int h)
    - 2D Transformations
      - Method
        
        http://qjg-wiki.googlecode.com/files/EE563Java2DTransformationsMethod.jpg
      - Scale 比例缩放
        
        http://qjg-wiki.googlecode.com/files/EE563Java2DTransformationsScale.jpg
      - Translate 移动
        
        http://qjg-wiki.googlecode.com/files/EE563Java2DTransformationsTranslate.jpg
      - Rotate 旋转
        
        http://qjg-wiki.googlecode.com/files/EE563Java2DTransformationsRotate.jpg
- Advanced(JAI)

VRML(Virtual Reality Markup Language )

Coordinate System
- Every point in a VRML world can be described by a set of x, y and z coordinates.
- http://qjg-wiki.googlecode.com/files/vrmlcoordinatesystem.gif
Scene Graphs
- node节点
- arc关系
  - DAG 树形无回路图
Shape
- Geometry
- Appearance
Transformations
Texture Mapping
Creating Custom Geomtery
- 凸立方体(不能有凹面)
- 同一个平面的点必须共面

Java3D

the scene graph programming model 场景图像编程模型
- What to draw
Data Type 数据类型
- import javax.vecmath
- Type
  - Point
    - Point2d
      - A 2 element point that is represented by double precision floating point x,y coordinates
  - Vector
  - Colour
    - Color3b(byte r, byte g, byte b)
      - 不透明
        
        a=255
    - Color3f
      - a=1.0不透明
    - Color4f(float r, float g, float b, float a)
      - r,g,b,a in [0.0,1.0]
    - RGB model 加色法混色模型
      - 0xRRGGBB
      - 8bits 表示 [0,255]
- Dimension 维度
  - 2D
    - Text
  - 3D
    - RGB
  - 4D
    - 3D vector + rotation 模型+旋转
- Precision 精度
  - byte
  - integer
  - float
  - double
Scene Graphs场景图像
- DAG
- SceneGraphObject场景图像对象
  - Node
    - Group
      - BranchGroup根
        
        Root
        
        void addBranchGraph(BranchGroup branchGroup)
        
        void removeBranchGraph(BranchGroup branchGroup)
      - OrderedGroup有序集合
        
        void addChild(Node child)
        
        void addChild(Node child, int[] childIndexOrder)
        
        int[] getChildIndexOrder()
      - TransformGroup可翻转等具有变化特性的集合
        
        TransformGroup()
        
        TransformGroup(Transform3D transform)
        
        void setTransform(Transform3D transform)
        
        void getTransform(Transform3D transform)
      - Switch开关集合
        
        Constructor
        
        Switch()
        
        Switch(int whichChild)
        
        Switch(int whichChild, BitSet childMask)
        
        Setter/Getter
        
        int getWhichChild()
        
        void setWhichChild(int childSelectionValue)
        
        BitSet getChildMask()
        
        void setChildMask(BitSet childMask)
        
        Capability
        
        ALLOW_SWITCH_READ
        
        ALLOW_SWITCH_Write
      - SharedGroup共享集合
        
        Subgroup
        
        Light
        
        Link
        
        Morph
        
        Shape
        
        Sound
      - ViewSpecificGroup
    - Leaf
      - Shape3D
        
        Constructor
        
        Shape3D()
        
        Shape3D(Geometry geometry, Appearance appearance)
        
        It contains a list of one or more Geometry component objects and a single Appearance component object. The geometry objects define the shape node's geometric data. The appearance object specifies that object's appearance attributes, including color, material, texture, and so on.
        
        Getter/Setter
        
        void addGeometry(Geometry geometry)
        
        Geometry getGeometry(int index)
        
        void setAppearance(Appearance appearance)
        
        Appearance getAppearance()
        
        Primitives
        
        Box
        
        Cone
        
        Cylinder
        
        Sphere
      - ViewPlatform
      - Environmental
        
        Background
        
        Background(Color3f backgroundColour)
        
        Background(ImageComponent2D backgroundImage)
        
        Behaviour
        
        void setSchedulingBounds(Bounds region)
        
        Mouse
        
        Picking
        
        Clip
        
        Fog
        
        LinearFog
        
        Colour
        
        Front distance
        
        Back distance
        
        LinearFog(Color3f colour, double frontDistance, double backDistance)
        
        物体距离与烟雾整体效果相除，查看影响因子，然后做颜色叠加
        
        ExponentialFog
        
        Lighting
        
        DirectionalLight
        
        PointLight
        
        SpotLight
        
        a point light source that shines in a specific direction
        
        AmbientLight 漫反射光源
        
        环境光效果计算http://hi.baidu.com/fcl06/blog/item/ad858e163246fb59f2de3207.html/cmtid/ceaa4a826b25faac0df4d25b
        
        Sound
        
        BoundingSphere(效果范围球)
        
        new BoundingSphere(new Point3d(), Double.MAX_VALUE)
        
        给出作用点和作用半径，这样就可以影响一定能范围的物体
        
        BoundingBox(Point3d lower, Point3d upper)
  - NodeComponent
    - Geometry
      - Raster (2D image)
      - GeometryArray
      - CompressedGeometry
      - Defining polygons
        
        The order of the vertices is important when defining the orientation of the polygon.
        
        Vertices of a quad must form a convex, planar polygon
      - Text3D
        
        font
        
        string
        
        path
        
        position
        
        alignment
        
        character spacing
    - Appearance
      - Material
        
        defines the appearance of an object under illumination, such as the ambient colour, diffuse colour, specular colour, emissive colour, and shininess.
        
        Ambient 反射环境光
        
        Diffuse 漫反射
        
        Specular 镜面反射
        
        Emissive 自身发出什么光
        
        Shininess 有光泽
      - Texture
        
        defines the texture image and filtering parameters used when tex- ture mapping is enabled.
        
        贴图纹理
        
        texture coordinates
        
        http://blog.csdn.net/doing5552/archive/2008/04/22/2315425.aspx
        
        Two modes
        
        CLAMP 强制拉伸
        
        force
        
        WRAP 循环
        
        repeat
      - TexCoordGeneration
        
        defines the attributes that apply to tex- ture coordinate generation, such as whether coordinate generation is enabled, coordinate format (2D or 3D coordinates), coordinate generation mode (object linear, eye linear, or spherical reflection mapping), and the R, S and T coordi- nate plane equations.
      - TextureUnitState
        
        an array that defines the texture state for each of N separate texture units. This allows multiple textures to be applied to a geometry.
        
        Each TextureUnitState object contains a Texture object, a TextureAttributes object and a TexCoordGeneration object.
      - Attribute
        
        LineAttributes
        
        pattern
        
        width
        
        antialiasing抗锯齿
        
        PointAttributes
        
        point
        
        size
        
        antialiasing
        
        PolygonAttributes
        
        defines the attributes used to render polygons, in- cluding culling, rasterization mode (filled, lines, or points), constant offset, offset factor and whether back facing normals are flipped.
        
        RenderingAttributes
        
        defines rendering operations, including the alpha test function and test value, the raster operation, whether vertex colours are ignored, whether invisible objects are rendered, and whether the depth buffer is enabled.
        
        TransparencyAttributes
        
        defines the attributes that affect transparency mode (blended, screen-door), blending function (used in transparency and antialiasing operations), and a blend value that defines the amount of trans- parency to be applied.
        
        SCREEN_DOOR模式通过选择某些像素完全透明而其他完全不透明实现。完全透明的像素所占比例与指定的透明参数几近相等。BLENDED模式透明度则通过将所有像素以指定透明参数百分数透明化。（BLENDED transparency is achieved by having all pixels be paririally transparent int the percentage specified by the transparency parameter.）混合方程由srcBlendFunction和dstBlendFunction属性指定。
        
        The SCREEN_DOOR mode creates gaps in the foreground colour to simulate different levels of transparency. The BLENDED mode blends the foreground and background colours to generate a more accurate and visually appealing result.
        
        http://hi.baidu.com/straybirdsnest/blog/item/a02225429c0068046a63e57f.html
        
        ColoringAttributes
        
        Color selection
        
        Shading底纹
        
        TextureAttributes
        
        defines the attributes that apply to texture mapping, such as the texture mode, texture transform, blend colour, and perspective correction mode
- VirtualUniverse, Locale and SimpleUniverse
PickTool
- PickCanvas
  - A tolerance of 0.0 may speedup picking slightly, but also make it very difficult to pick points and lines.
Behaviour
- DistanceLOD
- MouseZoom
- Billboard
- PositionInterpolator
System Architecture
- Threads
  - System
    - Reference Handler
    - Finalizer
    - Signal Dispatcher
  - Main
    - Main
    - AWT-EventQueue0
    - SunToolkit.PostEventQueue-0
    - AWT-Windows
    - Image Fetcher 1
    - Image Fetcher 0
  - Java3D
    - MasterControl
      - 管理消息转发与线程调度
      - J3dMessage
    - BehaviorScheduler
    - InputDeviceScheduler
    - Render
      - J3D-Renderer-INSTANCE
    - StructureUpdateThread
      - Geometry
      - Render
      - Behavior
      - Sound
      - RenderingAttributes
      - RenderingEnvironment
      - Transform
      - SoundScheduler
    - TimerThread

实际应用

CT
- MCA 利用切面构造三角形
- Volume Rendering 体构造

OpenGL

Install
- Ubuntu
  - http://stackoverflow.com/questions/859501/learning-opengl-in-ubuntu
  - http://ubuntuforums.org/showthread.php?t=375425
Libs
- -lglut -lGLU

tags: 3D

文章目录

1 EE563GraphicsAndVisualisation

创建@

2011-02-18

最后修改@

2014-01-01

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3D 1

EE563GraphicsAndVisualisation 2018 程序啪啪啪

EE563GraphicsAndVisualisation

Java2D

VRML(Virtual Reality Markup Language )

Java3D

实际应用

OpenGL

tags: 3D

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创建@

最后修改@

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