// SPDX-License-Identifier: MIT
// Copyright (c) 2026 Incoprea
// Size a display by viewing angle
// Not compiled or tested in-world
// Setup: Put in a spare owned prim. Set viewing distance positive and angle between0 and170 degrees. Touch to print the plan privately.
// Stop / restore: Remove/disable; calculations do not alter objects.
// Notes: Assumes centered perpendicular viewing. This is geometric planning, not a viewer camera adjustment.
// License: see LICENSE in this distribution.
// Original Incoprea. MIT. Calculation only.
float DISTANCE=6.0;
float ANGLE=45.0;
default
{
    touch_start(integer detectedCount)
    {
        if(llDetectedKey(0)!=llGetOwner())return;
        if(DISTANCE<=0.0||ANGLE<=0.0||ANGLE>=170.0)
        {
            llOwnerSay("Invalid distance/angle.");
            return;
        }
        llOwnerSay("Display width="+(string)(2.0*DISTANCE*llTan(ANGLE*DEG_TO_RAD*0.5)));
    }
}