GcsSloop / GcsSloop/AndroidNote

矩阵前乘后乘问题

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Description

Matrix m = new Matrix();
m.reset();
m.preTranslate(tx, ty);
m.preScale(sx, sy);

这地方是怎么个顺序
1.是preScale先右乘矩阵 preTranslate再右乘上次的结果。
2.preScale先右乘preTranslate,然后再乘矩阵。

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