setvox.txt

//MagicaVoxel shader by foreheadmelon
//Set a specific voxel to a specific color

//xs setvox [x] [y] [z] [color]
//example: 'xs setvox 10 20 50'
//color defaults to the selected color, otherwise use 1-255 for the palette index or negative values for air

float map(vec3 v) {
    float orig = voxel(v);
    float mat = iArgs[3];

    if(mat==0) mat = iColorIndex;
    if(mat<0) mat = 0;
    if(v==vec3(iArgs[0], iArgs[1], iArgs[2])) return mat;

    return orig;
}