diff --git a/packages/dooringx-lib/src/components/rightConfig.tsx b/packages/dooringx-lib/src/components/rightConfig.tsx
index b9868a8..16b64f1 100644
--- a/packages/dooringx-lib/src/components/rightConfig.tsx
+++ b/packages/dooringx-lib/src/components/rightConfig.tsx
@@ -2,7 +2,7 @@
  * @Author: yehuozhili
  * @Date: 2021-03-14 05:42:13
  * @LastEditors: yehuozhili
- * @LastEditTime: 2022-04-29 23:36:45
+ * @LastEditTime: 2022-04-30 23:07:13
  * @FilePath: \dooringx\packages\dooringx-lib\src\components\rightConfig.tsx
  */
 import { CreateOptionsRes } from '../core/components/formTypes';
diff --git a/packages/dooringx-lib/src/core/selectRange/index.ts b/packages/dooringx-lib/src/core/selectRange/index.ts
index 1ff45f4..dcf22f5 100644
--- a/packages/dooringx-lib/src/core/selectRange/index.ts
+++ b/packages/dooringx-lib/src/core/selectRange/index.ts
@@ -2,7 +2,7 @@ import { IStoreData } from '../store/storetype';
 import { deepCopy } from '../utils';
 import style from '../../index.less';
 import UserConfig from '../../config';
-import { getComponentRotatedStyle } from '../markline/calcRender';
+import { Sat } from './sat';
 export interface SelectDataProps {
 	selectDiv: HTMLDivElement | null;
 	posx: number;
@@ -60,8 +60,6 @@ function selectFocus(left: number, top: number, width: number, height: number, c
 	const focusState = config.getFocusState();
 	const blocks = clonedata.block;
 	let change = false;
-	const maxleft = left + width;
-	const maxtop = top + height;
 	blocks.forEach((v) => {
 		const l = v.left;
 		const t = v.top;
@@ -74,13 +72,21 @@ function selectFocus(left: number, top: number, width: number, height: number, c
 			typeof h === 'number' &&
 			v.canDrag === true
 		) {
-			const style = getComponentRotatedStyle(v.rotate.value, w, h, l, t);
-			if (
-				style.left >= left &&
-				style.right <= maxleft &&
-				style.top >= top &&
-				style.bottom <= maxtop
-			) {
+			const curItem = {
+				left: l,
+				top: t,
+				width: w,
+				height: h,
+				rotate: v.rotate.value,
+			};
+			const res = Sat(curItem, {
+				left,
+				width,
+				height,
+				top,
+				rotate: 0,
+			});
+			if (res) {
 				change = true;
 				v.focus = true;
 				focusState.blocks.push(v);
diff --git a/packages/dooringx-lib/src/core/selectRange/sat.ts b/packages/dooringx-lib/src/core/selectRange/sat.ts
new file mode 100644
index 0000000..b1ac47b
--- /dev/null
+++ b/packages/dooringx-lib/src/core/selectRange/sat.ts
@@ -0,0 +1,123 @@
+/*
+ * @Author: yehuozhili
+ * @Date: 2022-04-30 23:25:05
+ * @LastEditors: yehuozhili
+ * @LastEditTime: 2022-05-01 19:16:08
+ * @FilePath: \dooringx\packages\dooringx-lib\src\core\selectRange\sat.ts
+ */
+
+import { angleToRadian } from '../utils';
+
+interface BlockItem {
+	width: number;
+	left: number;
+	top: number;
+	height: number;
+	rotate: number;
+}
+function getCenter(item: BlockItem) {
+	return { x: item.left + item.width / 2, y: item.top + item.height / 2 };
+}
+function revert({ x, y }: { x: number; y: number }) {
+	return { x: y, y: -x };
+}
+function substract(a: { x: number; y: number }, b: { x: number; y: number }) {
+	return { x: a.x - b.x, y: a.y - b.y };
+}
+function getSides(list: { x: number; y: number }[]) {
+	let len = list.length;
+	let res = [];
+	for (let j = 1, pre = list[0]; j < len; j++) {
+		let p = list[j];
+		res.push(substract(p, pre));
+		pre = p;
+	}
+	res.push(substract(list[0], list[len - 1]));
+	return res;
+}
+function len(axis: { x: number; y: number }) {
+	return Math.sqrt(axis.x * axis.x + axis.y * axis.y);
+}
+function dot(a: { x: number; y: number }, b: { x: number; y: number }) {
+	return a.x * b.x + a.y * b.y;
+}
+function getProjection(axis: { x: number; y: number }, list: { x: number; y: number }[]) {
+	let min = null;
+	let max = null;
+	for (let i = 0, l = list.length; i < l; i++) {
+		let p = list[i];
+		let pro = dot(p, axis) / len(axis);
+		if (min === null || pro < min) {
+			min = pro;
+		}
+		if (max === null || pro > max) {
+			max = pro;
+		}
+	}
+	return { min: min, max: max };
+}
+
+function getOriginPoint(item: BlockItem) {
+	const center = getCenter(item);
+	let a = center.x;
+	let b = center.y;
+	const transfer = [
+		{ x: item.left, y: item.top },
+		{ x: item.left + item.width, y: item.top },
+		{ x: item.left + item.width, y: item.top + item.height },
+		{ x: item.left, y: item.top + item.height },
+	];
+	const relativePoint: { x: number; y: number }[] = [];
+	const rootPoint = transfer.map((v) => {
+		const x0 = v.x;
+		const y0 = v.y;
+		const rx =
+			a +
+			(x0 - a) * Math.cos(angleToRadian(item.rotate)) -
+			(y0 - b) * Math.sin(angleToRadian(item.rotate));
+		const ry =
+			b +
+			(x0 - a) * Math.sin(angleToRadian(item.rotate)) +
+			(y0 - b) * Math.cos(angleToRadian(item.rotate));
+		relativePoint.push({ x: a - rx, y: b - ry });
+		return { x: rx, y: ry };
+	});
+
+	return { rootPoint, relativePoint };
+}
+
+function polygonsCollisionTest(A: BlockItem, B: BlockItem) {
+	const resa = getOriginPoint(A);
+	const resb = getOriginPoint(B);
+	const sidesa = getSides(resa.relativePoint);
+	const sidesb = getSides(resb.relativePoint);
+	const sides = sidesa.concat(sidesb);
+	for (let j = 0, l = sides.length; j < l; j++) {
+		let axis = revert(sides[j]);
+		let proA = getProjection(axis, resa.rootPoint),
+			proB = getProjection(axis, resb.rootPoint);
+		if (isOverlay(proA, proB)) {
+			return false;
+		}
+	}
+
+	return true;
+}
+function isOverlay(proA: any, proB: any) {
+	let min, max;
+	if (proA.min < proB.min) {
+		min = proA.min;
+	} else {
+		min = proB.min;
+	}
+	if (proA.max > proB.max) {
+		max = proA.max;
+	} else {
+		max = proB.max;
+	}
+	return proA.max - proA.min + (proB.max - proB.min) < max - min;
+}
+
+export function Sat(v: BlockItem, select: BlockItem) {
+	return polygonsCollisionTest(v, select);
+}