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support rotation

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This commit is contained in:
Aakansha Doshi 2023-02-15 17:36:46 +05:30
parent 16db74cedd
commit 96b172ebfa
1 changed files with 33 additions and 24 deletions
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57
src/element/textElement.ts
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@ -11,7 +11,7 @@ import { mutateElement } from "./mutateElement";
import { BOUND_TEXT_PADDING, TEXT_ALIGN, VERTICAL_ALIGN } from "../constants";
import { MaybeTransformHandleType } from "./transformHandles";
import Scene from "../scene/Scene";
import { getElementBounds, isTextElement } from ".";
import { isTextElement } from ".";
import { getMaxContainerHeight, getMaxContainerWidth } from "./newElement";
import {
isBoundToContainer,
@ -28,6 +28,7 @@ import {
resetOriginalContainerCache,
updateOriginalContainerCache,
} from "./textWysiwyg";
import { rotatePoint } from "../math";
export const normalizeText = (text: string) => {
return (
@ -730,11 +731,17 @@ export const isHittingContainerStroke = (
container: ExcalidrawTextContainer,
zoom: number,
) => {
const bounds = getElementBounds(container);
const topLeft = [bounds[0], bounds[1]];
const topRight = [bounds[2], bounds[1]];
const bottomLeft = [bounds[0], bounds[3]];
const bottomRight = [bounds[2], bounds[3]];
const [x1, y1, x2, y2, cx, cy] = getElementAbsoluteCoords(container);
const topLeft = [x1, y1];
const topRight = [x2, y1];
const bottomLeft = [x1, y2];
const bottomRight = [x2, y2];
const [counterRotateX, counterRotateY] = rotatePoint(
[x, y],
[cx, cy],
-container.angle,
);
const strokeWidth = container.strokeWidth;
if (container.type === "ellipse") {
@ -744,13 +751,15 @@ export const isHittingContainerStroke = (
let a = container.width / 2 + threshold;
let b = container.height / 2 + threshold;
const checkPointOnOuterEllipse =
Math.pow(x - h, 2) / Math.pow(a, 2) + Math.pow(y - k, 2) / Math.pow(b, 2);
Math.pow(counterRotateX - h, 2) / Math.pow(a, 2) +
Math.pow(counterRotateY - k, 2) / Math.pow(b, 2);
a = container.width / 2 - strokeWidth - threshold;
b = container.height / 2 - strokeWidth - threshold;
const checkPointOnInnerEllipse =
Math.pow(x - h, 2) / Math.pow(a, 2) + Math.pow(y - k, 2) / Math.pow(b, 2);
Math.pow(counterRotateX - h, 2) / Math.pow(a, 2) +
Math.pow(counterRotateY - k, 2) / Math.pow(b, 2);
// The expression evaluates to 1 means point is on ellipse,
// < 1 means inside ellipse and > 1 means outside ellipse
@ -767,39 +776,39 @@ export const isHittingContainerStroke = (
// Left Stroke
if (
x >= topLeft[0] - threshold &&
x <= topLeft[0] + strokeWidth + threshold &&
y >= topLeft[1] - threshold &&
y <= bottomRight[1] + threshold
counterRotateX >= topLeft[0] - threshold &&
counterRotateX <= topLeft[0] + strokeWidth + threshold &&
counterRotateY >= topLeft[1] - threshold &&
counterRotateY <= bottomRight[1] + threshold
) {
return true;
}
// Top stroke
if (
x >= topLeft[0] - threshold &&
x <= topRight[0] + threshold &&
y >= topLeft[1] - threshold &&
y <= topLeft[1] + threshold + strokeWidth
counterRotateX >= topLeft[0] - threshold &&
counterRotateX <= topRight[0] + threshold &&
counterRotateY >= topLeft[1] - threshold &&
counterRotateY <= topLeft[1] + threshold + strokeWidth
) {
return true;
}
// Right stroke
if (
x >= topRight[0] - threshold - strokeWidth &&
x <= topRight[0] + threshold &&
y >= topRight[1] - threshold &&
y <= bottomRight[1] + threshold
counterRotateX >= topRight[0] - threshold - strokeWidth &&
counterRotateX <= topRight[0] + threshold &&
counterRotateY >= topRight[1] - threshold &&
counterRotateY <= bottomRight[1] + threshold
) {
return true;
}
// Bottom Stroke
if (
x >= bottomLeft[0] - threshold &&
x <= bottomRight[0] + threshold &&
y >= bottomLeft[1] - threshold - strokeWidth &&
y <= bottomLeft[1] + threshold
counterRotateX >= bottomLeft[0] - threshold &&
counterRotateX <= bottomRight[0] + threshold &&
counterRotateY >= bottomLeft[1] - threshold - strokeWidth &&
counterRotateY <= bottomLeft[1] + threshold
) {
return true;
}