《大气效果结点》PPT课件.ppt

第五章 大气效果结点,Fog color r g b 雾色（1.0 1.0 1.0） fogType “LINEAR“ 雾类型 visibilityRange s 可视距离（0.0） ,密度类型： “LINEAR“ 浓度与距离成正比（线性雾）。 “EXPONENTIAL“ 浓度与距离的平方成正比（指数雾）。 可视距离： 在可视距离以内物体可见。 0.0表示无穷远。,例：gtes.wrl,参考源代码（整体结构）,Group children 空间背景、雾、地面 9个门（间距5） Transform#移动到主席台底座前沿底部中心 translation 0.0 0.0 -42.0 children 底座、背墙、标语、三个台阶 , 视点1、2、3、4、5 ,主席台底座前沿底部中心,参考源代码（空间背景、雾）,Background skyAngle 1.047 1.570 skyColor 0.5 0.5 1.0 , 0.6 0.6 1.0 , 1.0 1.0 1.0 groundAngle 1.047 1.570 groundColor 0.5 1.0 0.5 , 0.6 1.0 0.6 , 1.0 1.0 1.0 , Fog color 1.0 1.0 1.0 fogType “LINEAR“ visibilityRange 50.0 ,参考源代码（地面）,Shape appearance Appearance material Material emissiveColor 0.5 0.8 0.5 geometry Box size 50.0 0.05 100.0 ,门尺寸,参考源代码（中间门整体结构）,DEF Bgate Group children 左柱 右柱 横梁 ,DEF Bgate Transform translation 0 0 0 children 左柱 右柱 横梁 ,参考源代码（中间门左柱）,Transform translation -2.0 2.0 0.0 children DEF Column Shape appearance DEF Bred Appearance material Material diffuseColor 1.0 0.0 0.0 geometry Cylinder radius 0.2 height 4.0 ,参考源代码（中间门右柱）,Transform translation 2.0 2.0 0.0 children USE Column ,参考源代码（中间门横梁）,Transform translation 0.0 4.15 0.0 children Shape appearance USE Bred geometry Box size 5.0 0.3 1.0 ,参考源代码：中间门前后各复制2个门,Transform translation 0.0 0.0 5.0 children USE Bgate , Transform translation 0.0 0.0 -5.0 children USE Bgate , Transform translation 0.0 0.0 10.0 children USE Bgate , Transform translation 0.0 0.0 -10.0 children USE Bgate ,参考源代码：前后再各复制2个门,Transform translation 0.0 0.0 15.0 children USE Bgate , Transform translation 0.0 0.0 -15.0 children USE Bgate , Transform translation 0.0 0.0 20.0 children USE Bgate , Transform translation 0.0 0.0 -20.0 children USE Bgate ,主席台尺寸,参考源代码（底座）,Transform#底座 translation 0.0 1.0 -3.0 children Shape appearance DEF app1 Appearance texture ImageTexture url “brick.jpg“ geometry Box size 16.0 2.0 6.0 ,参考源代码（背墙）,Transform#背墙 translation 0.0 4.5 -5.7 children Shape appearance USE app1 geometry Box size 12.0 5.0 0.6 ,参考源代码（标语）,Transform#标语 translation 0.0 4.9 -5.397 children Shape appearance Appearance texture ImageTexture url “Image2.jpg“ geometry Box size 10.0 1.0 0.006 ,台阶尺寸,参考源代码：高台阶,Transform#高台阶 translation 0.0 0.6 0.8 children Shape appearance DEF app2 Appearance material Material diffuseColor 0.8 0.8 0.8 emissiveColor 0.3 0.3 0.3 geometry Box size 6.0 1.2 1.6 ,参考源代码：中台阶,Transform translation 0.0 0.4 2.0 children Shape appearance USE app2 geometry Box size 6.0 0.8 0.8 ,参考源代码：低台阶,Transform translation 0.0 0.2 2.8 children Shape appearance USE app2 geometry Box size 6.0 0.4 0.8 ,视点1（userVP1）,视点2（userVP2）,视点3（userVP3）,视点4（userVP4）,视点5（userVP5）,参考源代码：视点1,Viewpoint position 0.0 10.0 55.0 orientation 1.0 0.0 0.0 -0.174 description “userVP1“ jump FALSE ,参考源代码：视点2、3,Viewpoint position 0.0 0.9 25.0 description “userVP2“ jump FALSE , Viewpoint position 5.0 0.9 25.0 orientation 0.0 1.0 0.0 0.523 description “userVP3“ jump FALSE ,参考源代码：视点4、5,Viewpoint position 0.0 0.9 -30.0 orientatio