Fixed vertical distance.md

/*

Download this file and save to your Obsidian Vault including the first line, or open it in "Raw" and copy the entire contents to Obsidian.

The script arranges the selected elements vertically with a fixed spacing.

When we create an architecture diagram or mind map, we often need to arrange a large number of elements in a fixed spacing. Fixed spacing and Fixed vertical Distance scripts can save us a lot of time.

*/
if(!ea.verifyMinimumPluginVersion || !ea.verifyMinimumPluginVersion("1.5.21")) {
  new Notice("This script requires a newer version of Excalidraw. Please install the latest version.");
  return;
}
settings = ea.getScriptSettings();
//set default values on first run
if(!settings["Default spacing"]) {
	settings = {
	  "Prompt for spacing?": true,
	  "Default spacing" : {
		value: 10,
		description: "Fixed vertical spacing between elements"
	  },
	  "Remember last spacing?": false
	};
	ea.setScriptSettings(settings);
}

let spacingStr = settings["Default spacing"].value.toString();
const rememberLastSpacing = settings["Remember last spacing?"];

if(settings["Prompt for spacing?"]) {
    spacingStr = await utils.inputPrompt("spacing?","number",spacingStr);
}

const spacing = parseInt(spacingStr);
if(isNaN(spacing)) {
  return;
}
if(rememberLastSpacing) {
	settings["Default spacing"].value = spacing;
	ea.setScriptSettings(settings);
}
const elements=ea.getViewSelectedElements(); 
const topGroups = ea.getMaximumGroups(elements)
    .filter(els => !(els.length === 1 && els[0].type ==="arrow")) // ignore individual arrows
    .filter(els => !(els.length === 1 && (els[0].containerId))); // ignore text in stickynote
    
const groups = topGroups.sort((lha,rha) => lha[0].y - rha[0].y);

for(var i=0; i<groups.length; i++) {
    if(i > 0) {
        const preGroup = groups[i-1];
        const curGroup = groups[i];

        const preBottom = Math.max(...preGroup.map(el => el.y + el.height));
        const curTop = Math.min(...curGroup.map(el => el.y));
        const distance = curTop -  preBottom - spacing;

        for(const curEl of curGroup) {
            curEl.y = curEl.y - distance;
        }
    }
}
ea.copyViewElementsToEAforEditing(elements);
await ea.addElementsToView(false, false);