// SPDX-License-Identifier: MIT
// Copyright (c) 2026 Incoprea
// Project a build point into planar UVs
// Not compiled or tested in-world
// Setup: Place in a spare owned prim. Set POINT, ORIGIN, U_AXIS and V_AXIS, each axis scaled to one texture repeat. Touch for owner-only output.
// Stop / restore: Remove/disable. The script calculates only; no scene properties change.
// Notes: Axes must be nonzero and perpendicular. This does not inspect mesh UVs; it plans a projection.
// License: see LICENSE in this distribution.
// Original Incoprea. MIT. Planning only.
vector POINT=<3.0,4.0,2.0>;
vector ORIGIN=ZERO_VECTOR;
vector U_AXIS=<2.0,0.0,0.0>;
vector V_AXIS=<0.0,2.0,0.0>;
default
{
    touch_start(integer detectedCount)
    {
        if(llDetectedKey(0)!=llGetOwner())return;
        float uu=U_AXIS*U_AXIS;
        float vv=V_AXIS*V_AXIS;
        if(uu<0.000001||vv<0.000001||llFabs(U_AXIS*V_AXIS)>0.0001)
        {
            llOwnerSay("Use nonzero perpendicular axes.");
            return;
        }
        vector delta=POINT-ORIGIN;
        llOwnerSay("Planar UV="+(string)<(delta*U_AXIS)/uu,(delta*V_AXIS)/vv,0.0>);
    }
}