// Draw the oval for reference
module draw_oval(rx, ry, segments = 100) {
    scale([rx, ry, 1])
    circle(1, $fn=segments);
}

// Function to place characters at specified positions and angles
module place_character(char, x, y, angle) {
    translate([x, y, 0])
    rotate([0, 0, angle])
    text(char, size = 30, valign = "center", halign = "center");
}

// Calculate x, y position and tangent angle for a character on an oval
module place_character_manual(char_data, rx, ry) {
    for (i = [0 : len(char_data) - 1]) {
        char_info = char_data[i];
        
        // Distance as an angle in degrees
        distance_deg = char_info[1];
        
        // Calculate the x, y position on the oval
        x = rx * cos(distance_deg);
        y = ry * sin(distance_deg);
        
        // Calculate the angle of rotation (tangent to the oval at this point)
        // This is the angle of the tangent vector at the point (x, y)
        tangent_angle_deg = atan2(ry * cos(distance_deg), -rx * sin(distance_deg));
        
        // Place the character
        place_character(char_info[0], x, y, tangent_angle_deg);
    }
}

// Example data to place characters using manually adjusted positions and angles
char_data = [
    ["H", 0],
    ["M", 15],
    ["S", 30],
    ["L", 45],
    ["S", 60],
    [" ", 75],
    ["5", 90],
    ["0", 105], 
    ["t", 120],
    ["h", 135],
    [" ", 150],
    ["A", 192],
    ["N", 209],
    ["N", 228],
    ["I", 239],
    ["V", 249],
    ["E", 263],
    ["R", 276],
    ["S", 289],
    ["A", 301],
    ["R", 316],
    ["Y", 336],
    [" ", 340]
];

// Parameters for final rendering
rx = 120;  // Radius in the X direction for the oval
ry = 70;   // Radius in the Y direction for the oval

// Draw the oval for reference
// draw_oval(rx, ry);

// Place characters using dynamically calculated positions and angles
place_character_manual(char_data, rx, ry);