43 lines
1.8 KiB
TypeScript
43 lines
1.8 KiB
TypeScript
import type { ImageDocument } from "@core/document";
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import type { EditorState } from "@editor/state";
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import { resolveTransformTargetBounds, selectedTransformTarget } from "@editor/transform-targets";
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import { clearScreenRect } from "./clear-rect";
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import { documentRectToScreenRect } from "./screen-rect";
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import type { RgbaColor, ScreenRect, WebGlRendererContext } from "./types";
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const handleColor: RgbaColor = [1, 1, 1, 1];
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const handleBorderColor: RgbaColor = [0.1, 0.65, 1, 1];
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export function renderTransformControls(context: WebGlRendererContext, document: ImageDocument, editor: EditorState) {
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const target = selectedTransformTarget(document, editor.selection);
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const bounds = target ? resolveTransformTargetBounds(document, target) : undefined;
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if (!bounds) return;
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const rect = documentRectToScreenRect(context.canvas, bounds, editor.viewport);
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for (const handle of transformHandleRects(rect)) {
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clearScreenRect(context, handle.border, handleBorderColor);
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clearScreenRect(context, handle.fill, handleColor);
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}
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}
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function transformHandleRects(rect: ScreenRect) {
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const size = 8;
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const border = 2;
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const half = size / 2;
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const points = [
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{ x: rect.x, y: rect.y },
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{ x: rect.x + rect.w / 2, y: rect.y },
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{ x: rect.x + rect.w, y: rect.y },
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{ x: rect.x + rect.w, y: rect.y + rect.h / 2 },
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{ x: rect.x + rect.w, y: rect.y + rect.h },
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{ x: rect.x + rect.w / 2, y: rect.y + rect.h },
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{ x: rect.x, y: rect.y + rect.h },
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{ x: rect.x, y: rect.y + rect.h / 2 },
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];
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return points.map((point) => ({
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border: { x: Math.round(point.x - half - border), y: Math.round(point.y - half - border), w: size + border * 2, h: size + border * 2 },
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fill: { x: Math.round(point.x - half), y: Math.round(point.y - half), w: size, h: size },
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}));
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}
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