140 lines
3.1 KiB
TypeScript
140 lines
3.1 KiB
TypeScript
import type { Vec2D } from "@core/geometry";
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import type { Command } from "./command";
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import { commandIds } from "./ids";
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export type ViewportPanPayload = {
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delta: Vec2D;
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};
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export type ViewportSetZoomPayload = {
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zoom: number;
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};
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export type ViewportZoomAroundPointPayload = {
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zoom: number;
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point: Vec2D;
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};
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export type ViewportSetSizePayload = {
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w: number;
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h: number;
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};
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export const viewportPanCommand: Command<ViewportPanPayload> = {
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id: commandIds.viewportPan,
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name: "Pan viewport",
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execute({ state }, payload) {
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return {
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...state,
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editor: {
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...state.editor,
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viewport: {
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...state.editor.viewport,
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center: {
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x: state.editor.viewport.center.x + payload.delta.x,
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y: state.editor.viewport.center.y + payload.delta.y,
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},
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},
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},
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};
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},
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};
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export const viewportSetZoomCommand: Command<ViewportSetZoomPayload> = {
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id: commandIds.viewportSetZoom,
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name: "Set viewport zoom",
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execute({ state }, payload) {
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const zoom = Math.max(0.01, payload.zoom);
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return {
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...state,
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editor: {
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...state.editor,
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viewport: {
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...state.editor.viewport,
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zoom,
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},
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},
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};
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},
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};
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export const viewportZoomAroundPointCommand: Command<ViewportZoomAroundPointPayload> = {
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id: commandIds.viewportZoomAroundPoint,
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name: "Zoom viewport around point",
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execute({ state }, payload) {
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const viewport = state.editor.viewport;
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const zoom = Math.max(0.01, payload.zoom);
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const offset = {
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x: payload.point.x - viewport.size.w / 2,
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y: payload.point.y - viewport.size.h / 2,
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};
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const documentPoint = {
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x: viewport.center.x + offset.x / viewport.zoom,
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y: viewport.center.y + offset.y / viewport.zoom,
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};
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return {
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...state,
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editor: {
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...state.editor,
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viewport: {
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...viewport,
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zoom,
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center: {
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x: documentPoint.x - offset.x / zoom,
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y: documentPoint.y - offset.y / zoom,
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},
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},
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},
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};
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},
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};
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export const viewportSetSizeCommand: Command<ViewportSetSizePayload> = {
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id: commandIds.viewportSetSize,
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name: "Set viewport size",
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execute({ state }, payload) {
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return {
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...state,
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editor: {
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...state.editor,
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viewport: {
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...state.editor.viewport,
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size: {
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w: Math.max(0, payload.w),
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h: Math.max(0, payload.h),
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},
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},
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},
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};
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},
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};
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export const viewportResetCommand: Command = {
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id: commandIds.viewportReset,
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name: "Reset viewport",
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execute({ state }) {
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return {
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...state,
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editor: {
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...state.editor,
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viewport: {
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center: { x: 0, y: 0 },
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zoom: 1,
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rotation: 0,
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size: state.editor.viewport.size,
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},
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},
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};
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},
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};
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export const viewportCommands = [
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viewportPanCommand,
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viewportSetZoomCommand,
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viewportZoomAroundPointCommand,
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viewportSetSizeCommand,
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viewportResetCommand,
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] satisfies Command<unknown>[];
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