Midi Velocity Up & Down and pre determined values

Hi @Justin_Krol,

I'll take a look this week and see if it's something that we can achieve, I can see the benefits!

Thanks for the request.

This issue is now tracked internally by SoundFlow as SF-1441

Hi @Justin_Krol,

I did some research into this and unfortunately hit a roadblock.

When multiple notes of different velocities are selected, the velocity slider value only displays the lowest velocity of all selected notes.

However, if your use case is for single MIDI notes or MIDI notes with the same velocity values, this script will do the trick.

const logic = sf.ui.logic;

// Bail out if Logic Pro is not running
if (!logic.isRunning) throw `Logic Pro is not running`;

logic.invalidate();
logic.appActivate();

const pianoRollGroup = logic.mainWindow.groups.whoseDescription.is("Piano Roll").first;
const pianoRoll = pianoRollGroup.groups.whoseDescription.is("Piano Roll").allItems[1];
const pianoRollInspector = pianoRoll.splitGroups.first.splitGroups.allItems[1].children.whoseRole.is("AXUnknown").whoseDescription.is("Inspector").first;
const velocityGroup = pianoRollInspector.scrollAreas.first.groups.find(g => g.children.whoseRole.is("AXStaticText").whoseValue.is("Velocity").first.exists);

const [_, velocityValueText, velocitySliderElement] = velocityGroup.children.map(e => e);

const velocitySlider = velocitySliderElement.children.whoseRole.is("AXValueIndicator").first;

if (!velocitySlider) throw `Could not find the Velocity slider`;

const getCurrentVelocity = () => Number(velocityValueText.value.invalidate().value);

// Increments the Slider by 1
const incrementSmall = () => velocitySlider.value.value = "1";
// Increments the Slider by 5
const incrementLarge = () => velocitySliderElement.elementClick({ actionName: "AXIncrement" });

// Decrements the Slider by 1
const decrementSmall = () => velocitySlider.value.value = "-1";
// Decrements the Slider by 5
const decrementLarge = () => velocitySliderElement.elementClick({ actionName: "AXDecrement" });

/**
 * Adjusts the velocity in the Piano Roll.
 *
 * @param {Object} options - The adjustment options.
 * @param {number} [options.targetVelocity] - The specific velocity to set (must be between 1 and 127).
 * @param {number} [options.adjustBy] - The amount to increase or decrease the current velocity.
 * @throws Will throw an error if targetVelocity is provided and is out of range (1-127).
 */
function adjustVelocity({ targetVelocity, adjustBy } = {}) {
    if (targetVelocity != null) {
        if (targetVelocity < 1 || targetVelocity > 127) {
            log("Set/Adjust Velocity", `Target Velocity must be between 1 and 127`);
            throw 0
        }
    } else if (adjustBy != null) {
        // Calculate the target based on current velocity and adjustBy
        targetVelocity = Math.max(1, Math.min(127, getCurrentVelocity() + adjustBy));
    } else if(targetVelocity === undefined && adjustBy === undefined){
        log("Set/Adjust Velocity", `This preset must have either a "Target Velocity" or "Increment By" property value`);
        throw 0
    }

    // Adjust to reach target velocity
    while (getCurrentVelocity() !== targetVelocity) {
        const currentVelocity = getCurrentVelocity();
        const delta = Math.abs(currentVelocity - targetVelocity);

        if (currentVelocity > targetVelocity) { // Decrement
            if (delta >= 5) {
                decrementLarge();
            } else {
                for (let i = 0; i < delta; i++) decrementSmall();
            }
        } else { // Increment
            if (delta >= 5) {
                incrementLarge();
            } else {
                for (let i = 0; i < delta; i++) incrementSmall();
            }
        }

        sf.engine.checkForCancellation();
    }
}

Here are some example use cases for the function call.

// Set a target velocity value between 1-127
adjustVelocity({ targetVelocity:60 });

// Increment the note velocity by 10
adjustVelocity({ adjustBy:10 });

// Decrement the note velocity by 10
adjustVelocity({ adjustBy:-10 });

You could also turn this into a Command Template...

const { targetVelocity, adjustBy } = event.props;

const logic = sf.ui.logic;

// Bail out if Logic Pro is not running
if (!logic.isRunning) throw `Logic Pro is not running`;

logic.invalidate();
logic.appActivate();

const pianoRollGroup = logic.mainWindow.groups.whoseDescription.is("Piano Roll").first;
const pianoRoll = pianoRollGroup.groups.whoseDescription.is("Piano Roll").allItems[1];
const pianoRollInspector = pianoRoll.splitGroups.first.splitGroups.allItems[1].children.whoseRole.is("AXUnknown").whoseDescription.is("Inspector").first;
const velocityGroup = pianoRollInspector.scrollAreas.first.groups.find(g => g.children.whoseRole.is("AXStaticText").whoseValue.is("Velocity").first.exists);

const [_, velocityValueText, velocitySliderElement] = velocityGroup.children.map(e => e);

const velocitySlider = velocitySliderElement.children.whoseRole.is("AXValueIndicator").first;

if (!velocitySlider) throw `Could not find the Velocity slider`;

const getCurrentVelocity = () => Number(velocityValueText.value.invalidate().value);

// Increments the Slider by 1
const incrementSmall = () => velocitySlider.value.value = "1";
// Increments the Slider by 5
const incrementLarge = () => velocitySliderElement.elementClick({ actionName: "AXIncrement" });

// Decrements the Slider by 1
const decrementSmall = () => velocitySlider.value.value = "-1";
// Decrements the Slider by 5
const decrementLarge = () => velocitySliderElement.elementClick({ actionName: "AXDecrement" });

/**
 * Adjusts the velocity in the Piano Roll.
 *
 * @param {Object} options - The adjustment options.
 * @param {number} [options.targetVelocity] - The specific velocity to set (must be between 1 and 127).
 * @param {number} [options.adjustBy] - The amount to increase or decrease the current velocity.
 * @throws Will throw an error if targetVelocity is provided and is out of range (1-127).
 */
function adjustVelocity({ targetVelocity, adjustBy } = {}) {
    if (targetVelocity != null) {
        if (targetVelocity < 1 || targetVelocity > 127) {
            log("Set/Adjust Velocity", `Target Velocity must be between 1 and 127`);
            throw 0
        }
    } else if (adjustBy != null) {
        // Calculate the target based on current velocity and adjustBy
        targetVelocity = Math.max(1, Math.min(127, getCurrentVelocity() + adjustBy));
    } else if(targetVelocity === undefined && adjustBy === undefined){
        log("Set/Adjust Velocity", `This preset must have either a "Target Velocity" or "Increment By" property value`);
        throw 0
    }

    // Adjust to reach target velocity
    while (getCurrentVelocity() !== targetVelocity) {
        const currentVelocity = getCurrentVelocity();
        const delta = Math.abs(currentVelocity - targetVelocity);

        if (currentVelocity > targetVelocity) { // Decrement
            if (delta >= 5) {
                decrementLarge();
            } else {
                for (let i = 0; i < delta; i++) decrementSmall();
            }
        } else { // Increment
            if (delta >= 5) {
                incrementLarge();
            } else {
                for (let i = 0; i < delta; i++) incrementSmall();
            }
        }

        sf.engine.checkForCancellation();
    }
}

adjustVelocity({ targetVelocity, adjustBy });

With template properties set up like this...

With presets like this...

The linked internal issue SF-1441 has been marked as Done