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@@ -373,7 +373,7 @@ However, this is not the same:
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# yields a different results
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# yields a different results
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pos = (transform1 * transform2).xform(pos)
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pos = (transform1 * transform2).xform(pos)
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-Because in matrix math, A + B is not the same as B + A.
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+Because in matrix math, A * B is not the same as B * A.
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Multiplication by inverse
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Multiplication by inverse
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-------------------------
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@@ -409,8 +409,7 @@ For 3 levels:
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::
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::
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- # due to reverse order, parenthesis are needed
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- var global_xform = gradparent_matrix + (parent_matrix + child_matrix)
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+ var global_xform = gradparent_matrix * parent_matrix * child_matrix
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To make a matrix relative to the parent, use the affine inverse (or
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To make a matrix relative to the parent, use the affine inverse (or
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regular inverse for orthonormal matrices).
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regular inverse for orthonormal matrices).
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