通过 javascript 在 Illustrator 中将艺术品与画板对齐

Question

我正在尝试通过 javascript 将 illustrator 中的对象放置在艺术板的底部左侧。我可以使用 javascript 访问对象并对其执行“旋转”等功能

if ( app.documents.length > 0) {
    doc = app.activeDocument;
}


   function traceImage(doc) {

         doc.pageItems[0].rotate (30);


}

traceImage(doc);

但我很难找到一种简单的方法来定位/对齐艺术板底部/左侧的“pageItems[0]”。除了计算它的当前距离然后移动它之外，还有更简单的方法吗？谢谢。

Answer 1

可能有比这更简单的方法，但这可行。

if ( app.documents.length > 0) {
    doc = app.activeDocument;

     // Get the active Artboard index
    var activeAB = doc.artboards[doc.artboards.getActiveArtboardIndex()];

    // Get the Height of the Artboard
    var artboardBottom = activeAB.artboardRect[3];

    // The page item you want to move. Reference it how you will. This just
    // obviously grabs the first pageItem in the document.
    var myPageItem = doc.pageItems[0];

    // Here is where the magic happens. Set the poition of the item.
    // [0,0] would be at the top left, so we have to compensate for the artboard
    // height. We add myPageItem's height for offset, or we'd end up BELOW
    // the artboard.
    myPageItem.position = [0, artboardBottom + myPageItem.height];
}

本质上，我们必须将 pageItem 的左上角设置为画板的左下角。不幸的是，这会使我们的 pageItem 低于画板，因此我们根据 pageItem 的高度调整偏移：

Answer 2

同样，如果您希望将项目置于画板的中心，则需要稍微不同地处理高度和宽度。

if ( app.documents.length > 0) {
    doc = app.activeDocument;

    // Get the active Artboard index
    var activeAB = doc.artboards[doc.artboards.getActiveArtboardIndex()];

    // Get the right most X point of the Artboard
    // artboardX + artboardWidth
    var artboardRight = activeAB.artboardRect[0] + activeAB.artboardRect[2];
    // Get the bottom most Y point of the Artboard
    // artboardY + artboardHeight
    var artboardBottom = activeAB.artboardRect[1] + activeAB.artboardRect[3];
   
    // The page item you want to move. Reference it how you will. This just
    // obviously grabs the first pageItem in the document.
    var myPageItem = doc.pageItems[0];

    // Here is where the magic happens. Set the position of the item.
    // [0,0] would be at the top left, so we have to compensate for the    artboard
    // height and width. We add item's height then split it for the vertical
    // offset, or we'd  end up BELOW the artboard.
    // Then we subtract the item's width and split the difference to center the
    // item horizontally.
    var horziontalCenterPosition = (artboardRight - myPageItem.width)/2;
    var verticalCenterPosition = (artboardBottom + myPageItem.height)/2;

    myPageItem.position = [horziontalCenterPosition, verticalCenterPosition];
}