cione-comp-lib
Version:
`$ yarn add cione-comp-lib` 或者 `$ npm i cione-comp-lib -S`
54 lines (53 loc) • 1.92 kB
JavaScript
import { create, invert } from "../../../../zrender/lib/core/matrix.mjs";
import { applyTransform } from "../../../../zrender/lib/core/vector.mjs";
function GLViewHelper(viewGL) {
this.viewGL = viewGL;
}
GLViewHelper.prototype.reset = function(seriesModel, api) {
this._updateCamera(api.getWidth(), api.getHeight(), api.getDevicePixelRatio());
this._viewTransform = create();
this.updateTransform(seriesModel, api);
};
GLViewHelper.prototype.updateTransform = function(seriesModel, api) {
var coordinateSystem = seriesModel.coordinateSystem;
if (coordinateSystem.getRoamTransform) {
invert(this._viewTransform, coordinateSystem.getRoamTransform());
this._setCameraTransform(this._viewTransform);
api.getZr().refresh();
}
};
GLViewHelper.prototype.dataToPoint = function(coordSys, data, pt) {
pt = coordSys.dataToPoint(data, null, pt);
var viewTransform = this._viewTransform;
if (viewTransform) {
applyTransform(pt, pt, viewTransform);
}
};
GLViewHelper.prototype.removeTransformInPoint = function(pt) {
if (this._viewTransform) {
applyTransform(pt, pt, this._viewTransform);
}
return pt;
};
GLViewHelper.prototype.getZoom = function() {
if (this._viewTransform) {
var m = this._viewTransform;
return 1 / Math.max(Math.sqrt(m[0] * m[0] + m[1] * m[1]), Math.sqrt(m[2] * m[2] + m[3] * m[3]));
}
return 1;
};
GLViewHelper.prototype._setCameraTransform = function(m) {
var camera = this.viewGL.camera;
camera.position.set(m[4], m[5], 0);
camera.scale.set(Math.sqrt(m[0] * m[0] + m[1] * m[1]), Math.sqrt(m[2] * m[2] + m[3] * m[3]), 1);
};
GLViewHelper.prototype._updateCamera = function(width, height, dpr) {
this.viewGL.setViewport(0, 0, width, height, dpr);
var camera = this.viewGL.camera;
camera.left = camera.top = 0;
camera.bottom = height;
camera.right = width;
camera.near = 0;
camera.far = 100;
};
export { GLViewHelper as default };