## Name

ST_TransScale — 按给定的偏移量和系数平移和缩放几何图形。

## Synopsis

`geometry ST_TransScale(`geometry geomA, float deltaX, float deltaY, float XFactor, float YFactor`)`;

## 描述

 `ST_TransScale(geomA, deltaX, deltaY, XFactor, YFactor) `是` ST_Affine(geomA, XFactor, 0, 0, 0, YFactor, 0, 0, 0, 1, deltaX*XFactor, deltaY*YFactor, 0) `的简写。
 在 1.3.4 之前，此函数在与包含曲线的几何图形一起使用时崩溃。 此问题已在 1.3.4 及更高版本中得到纠正

## 示例

```SELECT ST_AsEWKT(ST_TransScale(ST_GeomFromEWKT('LINESTRING(1 2 3, 1 1 1)'), 0.5, 1, 1, 2));
st_asewkt
-----------------------------
LINESTRING(1.5 6 3,1.5 4 1)

--Buffer a point to get an approximation of a circle, convert to curve and then translate 1,2 and scale it 3,4
SELECT ST_AsText(ST_Transscale(ST_LineToCurve(ST_Buffer('POINT(234 567)', 3)),1,2,3,4));
st_astext
------------------------------------------------------------------------------------------------------------------------------
CURVEPOLYGON(CIRCULARSTRING(714 2276,711.363961030679 2267.51471862576,705 2264,698.636038969321 2284.48528137424,714 2276))

```