@esotericsoftware/spine-webgl
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The official Spine Runtimes for the web.
98 lines • 14.5 kB
JavaScript
/******************************************************************************
* Spine Runtimes License Agreement
* Last updated April 5, 2025. Replaces all prior versions.
*
* Copyright (c) 2013-2025, Esoteric Software LLC
*
* Integration of the Spine Runtimes into software or otherwise creating
* derivative works of the Spine Runtimes is permitted under the terms and
* conditions of Section 2 of the Spine Editor License Agreement:
* http://esotericsoftware.com/spine-editor-license
*
* Otherwise, it is permitted to integrate the Spine Runtimes into software
* or otherwise create derivative works of the Spine Runtimes (collectively,
* "Products"), provided that each user of the Products must obtain their own
* Spine Editor license and redistribution of the Products in any form must
* include this license and copyright notice.
*
* THE SPINE RUNTIMES ARE PROVIDED BY ESOTERIC SOFTWARE LLC "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES,
* BUSINESS INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THE SPINE RUNTIMES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*****************************************************************************/
import { Input } from "./Input.js";
import { Vector3 } from "./Vector3.js";
export class CameraController {
canvas;
camera;
constructor(canvas, camera) {
this.canvas = canvas;
this.camera = camera;
let cameraX = 0, cameraY = 0, cameraZoom = 0;
let mouseX = 0, mouseY = 0;
let lastX = 0, lastY = 0;
let initialZoom = 0;
new Input(canvas).addListener({
down: (x, y) => {
cameraX = camera.position.x;
cameraY = camera.position.y;
mouseX = lastX = x;
mouseY = lastY = y;
initialZoom = camera.zoom;
},
dragged: (x, y) => {
let deltaX = x - mouseX;
let deltaY = y - mouseY;
let originWorld = camera.screenToWorld(new Vector3(0, 0), canvas.clientWidth, canvas.clientHeight);
let deltaWorld = camera.screenToWorld(new Vector3(deltaX, deltaY), canvas.clientWidth, canvas.clientHeight).sub(originWorld);
camera.position.set(cameraX - deltaWorld.x, cameraY - deltaWorld.y, 0);
camera.update();
lastX = x;
lastY = y;
},
wheel: (delta) => {
let zoomAmount = delta / 200 * camera.zoom;
let newZoom = camera.zoom + zoomAmount;
if (newZoom > 0) {
let x = 0, y = 0;
if (delta < 0) {
x = lastX;
y = lastY;
}
else {
let viewCenter = new Vector3(canvas.clientWidth / 2 + 15, canvas.clientHeight / 2);
let mouseToCenterX = lastX - viewCenter.x;
let mouseToCenterY = canvas.clientHeight - 1 - lastY - viewCenter.y;
x = viewCenter.x - mouseToCenterX;
y = canvas.clientHeight - 1 - viewCenter.y + mouseToCenterY;
}
let oldDistance = camera.screenToWorld(new Vector3(x, y), canvas.clientWidth, canvas.clientHeight);
camera.zoom = newZoom;
camera.update();
let newDistance = camera.screenToWorld(new Vector3(x, y), canvas.clientWidth, canvas.clientHeight);
camera.position.add(oldDistance.sub(newDistance));
camera.update();
}
},
zoom: (initialDistance, distance) => {
let newZoom = initialDistance / distance;
camera.zoom = initialZoom * newZoom;
},
up: (x, y) => {
lastX = x;
lastY = y;
},
moved: (x, y) => {
lastX = x;
lastY = y;
},
});
}
}
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Replaces all prior versions.\n *\n * Copyright (c) 2013-2025, Esoteric Software LLC\n *\n * Integration of the Spine Runtimes into software or otherwise creating\n * derivative works of the Spine Runtimes is permitted under the terms and\n * conditions of Section 2 of the Spine Editor License Agreement:\n * http://esotericsoftware.com/spine-editor-license\n *\n * Otherwise, it is permitted to integrate the Spine Runtimes into software\n * or otherwise create derivative works of the Spine Runtimes (collectively,\n * \"Products\"), provided that each user of the Products must obtain their own\n * Spine Editor license and redistribution of the Products in any form must\n * include this license and copyright notice.\n *\n * THE SPINE RUNTIMES ARE PROVIDED BY ESOTERIC SOFTWARE LLC \"AS IS\" AND ANY\n * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED\n * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE\n * DISCLAIMED. IN NO EVENT SHALL ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY\n * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES\n * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES,\n * BUSINESS INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) HOWEVER CAUSED AND\n * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF\n * THE SPINE RUNTIMES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n *****************************************************************************/\n\nimport { Input } from \"./Input.js\";\nimport { OrthoCamera } from \"./Camera.js\";\nimport { Vector3 } from \"./Vector3.js\";\n\nexport class CameraController {\n\tconstructor (public canvas: HTMLElement, public camera: OrthoCamera) {\n\t\tlet cameraX = 0, cameraY = 0, cameraZoom = 0;\n\t\tlet mouseX = 0, mouseY = 0;\n\t\tlet lastX = 0, lastY = 0;\n\t\tlet initialZoom = 0;\n\n\t\tnew Input(canvas).addListener({\n\t\t\tdown: (x: number, y: number) => {\n\t\t\t\tcameraX = camera.position.x;\n\t\t\t\tcameraY = camera.position.y;\n\t\t\t\tmouseX = lastX = x;\n\t\t\t\tmouseY = lastY = y;\n\t\t\t\tinitialZoom = camera.zoom;\n\t\t\t},\n\t\t\tdragged: (x: number, y: number) => {\n\t\t\t\tlet deltaX = x - mouseX;\n\t\t\t\tlet deltaY = y - mouseY;\n\t\t\t\tlet originWorld = camera.screenToWorld(new Vector3(0, 0), canvas.clientWidth, canvas.clientHeight);\n\t\t\t\tlet deltaWorld = camera.screenToWorld(new Vector3(deltaX, deltaY), canvas.clientWidth, canvas.clientHeight).sub(originWorld);\n\t\t\t\tcamera.position.set(cameraX - deltaWorld.x, cameraY - deltaWorld.y, 0);\n\t\t\t\tcamera.update();\n\t\t\t\tlastX = x;\n\t\t\t\tlastY = y;\n\t\t\t},\n\t\t\twheel: (delta: number) => {\n\t\t\t\tlet zoomAmount = delta / 200 * camera.zoom;\n\t\t\t\tlet newZoom = camera.zoom + zoomAmount;\n\t\t\t\tif (newZoom > 0) {\n\t\t\t\t\tlet x = 0, y = 0;\n\t\t\t\t\tif (delta < 0) {\n\t\t\t\t\t\tx = lastX; y = lastY;\n\t\t\t\t\t} else {\n\t\t\t\t\t\tlet viewCenter = new Vector3(canvas.clientWidth / 2 + 15, canvas.clientHeight / 2);\n\t\t\t\t\t\tlet mouseToCenterX = lastX - viewCenter.x;\n\t\t\t\t\t\tlet mouseToCenterY = canvas.clientHeight - 1 - lastY - viewCenter.y;\n\t\t\t\t\t\tx = viewCenter.x - mouseToCenterX;\n\t\t\t\t\t\ty = canvas.clientHeight - 1 - viewCenter.y + mouseToCenterY;\n\t\t\t\t\t}\n\t\t\t\t\tlet oldDistance = camera.screenToWorld(new Vector3(x, y), canvas.clientWidth, canvas.clientHeight);\n\t\t\t\t\tcamera.zoom = newZoom;\n\t\t\t\t\tcamera.update();\n\t\t\t\t\tlet newDistance = camera.screenToWorld(new Vector3(x, y), canvas.clientWidth, canvas.clientHeight);\n\t\t\t\t\tcamera.position.add(oldDistance.sub(newDistance));\n\t\t\t\t\tcamera.update();\n\t\t\t\t}\n\t\t\t},\n\t\t\tzoom: (initialDistance, distance) => {\n\t\t\t\tlet newZoom = initialDistance / distance;\n\t\t\t\tcamera.zoom = initialZoom * newZoom;\n\t\t\t},\n\t\t\tup: (x: number, y: number) => {\n\t\t\t\tlastX = x;\n\t\t\t\tlastY = y;\n\t\t\t},\n\t\t\tmoved: (x: number, y: number) => {\n\t\t\t\tlastX = x;\n\t\t\t\tlastY = y;\n\t\t\t},\n\t\t});\n\t}\n}\n"]}