getStringCoordinates(font, inputString, fontHeight)

function [coords] = getStringCoordinates(font, inputString, fontHeight)
	coords = zeros(2,0);
	currentMax = 1;
	for i = 1:length(inputString)
		if i ~= 1 % spacing between characters
			currentMax = currentMax + round(font.spacing * fontHeight);
		end
		
		% rasterize and add character
		charIndex = inputString(i) + 0;
		if isempty(font.char(charIndex).char) % default is question mark which is mandatory in every font file
			charIndex = '?' + 0;
		end
		c = font.char(charIndex); % find character
		newCoords = getCharCoordinates(c, fontHeight); % rasterize character locally
		newCoords(1,:) = newCoords(1,:) + currentMax; % shift horizontally to the final position inside string
		coords = [coords newCoords];
		
		currentMax = currentMax + round(c.width * fontHeight);
	end
	
	coords = unique(coords', 'rows')';
	
end