请问关于Transformation Matrix(转换矩阵)?
能帮我解释一个：<BR>
<PRE class=Code>' Rotation Matrix: 90 Degrees about point 0,0,0
' 0.000000-1.0000000.0000000.000000
' 1.0000000.0000000.0000000.000000
' 0.0000000.0000001.0000000.000000
' 0.0000000.0000000.0000001.000000
<PRE class=Code>' Rotation Matrix: 45 Degrees about point 5,5,0
' 0.707107-0.7071070.0000005.000000
' 0.7071070.7071070.000000-2.071068
' 0.0000000.0000001.0000000.000000
' 0.0000000.0000000.0000001.000000
<PRE class=Code>' Translation Matrix: move an object by 10,10,0
' 1.0000000.0000000.00000010.000000
' 0.0000001.0000000.00000010.000000
' 0.0000000.0000001.0000000.000000
' 0.0000000.0000000.0000001.000000
<PRE class=Code>' Scaling Matrix: scale by 10,10 at point 0,0,0
' 10.0000000.0000000.0000000.000000
' 0.00000010.0000000.0000000.000000
' 0.0000000.00000010.0000000.000000
' 0.0000000.0000000.0000001.000000
<PRE class=Code>' Scaling Matrix: scale by 10 at point 2,2
' 10.0000000.0000000.000000-18.000000
' 0.00000010.0000000.000000-18.000000
' 0.0000000.00000010.0000000.000000
' 0.0000000.0000000.0000001.000000</PRE><PRE class=Code>
是什么意思吗? 比如最后一个 "at point 2,2"在哪里体现出来的?</PRE><PRE class=Code>怎么构造一个自己需要的转换矩阵?</PRE><PRE class=Code> </PRE></PRE></PRE></PRE></PRE>
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