public float[] GetLetterProgressions(TextFxAnimationManager anim_manager, ref LetterSetup[] letters, TextAlignment alignment = TextAlignment.Left)
{
float[] letter_progressions = new float[letters.Length];
if (letters.Length == 0)
{
return(letter_progressions);
}
if (m_pointData.m_numActiveCurvePoints < 2)
{
for (int idx = 0; idx < letters.Length; idx++)
{
letter_progressions[idx] = 0;
}
return(letter_progressions);
}
float progress_inc = 1f / NUM_CURVE_SAMPLE_SUBSECTIONS;
float progress;
Vector3 new_point = new Vector3();
Vector3 last_point = new Vector3();
int letter_idx = 0, line_number = 0;
float base_letters_offset = 0, letters_offset = 0;
LetterSetup letter = null;
float last_line_length = 0, line_length = 0;
float curve_length = 0;
float renderedTextWidth;
// Method to handle offsetting the letter_offset value based on the text alignment setting
System.Action offsetBasedOnTextAlignment = () => {
if (alignment == TextAlignment.Center || alignment == TextAlignment.Right)
{
renderedTextWidth = (anim_manager.TextWidthScaled(letter.m_progression_variables.LineValue) < curve_length ? anim_manager.TextWidthScaled(letter.m_progression_variables.LineValue) : curve_length);
if (alignment == TextAlignment.Center)
{
letters_offset += (curve_length / 2) - (renderedTextWidth / 2);
}
else if (alignment == TextAlignment.Right)
{
letters_offset += curve_length - renderedTextWidth;
}
}
};
// Grab reference to first letter setup
letter = letters[0];
// Calculate the total length of the belzier curve if the text alignment is set to center or right.
if (alignment == TextAlignment.Center || alignment == TextAlignment.Right)
{
for (int curve_idx = 0; curve_idx < m_pointData.m_numActiveCurvePoints - 1; curve_idx++)
{
curve_length += GetCurveLength(curve_idx);
}
}
// Assign base letter offset value using first letters offset value
base_letters_offset = letter.BaseVerticesCenter.x / anim_manager.AnimationInterface.MovementScale - (letter.Width / anim_manager.AnimationInterface.MovementScale) / 2;
// Setup letter offset value
letters_offset = (letter.Width / anim_manager.AnimationInterface.MovementScale) / 2;
// Handle alignment-specific offset values
offsetBasedOnTextAlignment();
bool reachedEndOfLetters = false;
while (!reachedEndOfLetters)
{
for (int curve_idx = 0; curve_idx < m_pointData.m_numActiveCurvePoints - 1; curve_idx++)
{
for (int idx = 0; idx <= NUM_CURVE_SAMPLE_SUBSECTIONS; idx++)
{
progress = idx * progress_inc;
new_point = GetCurvePoint(progress, curve_idx: curve_idx);
if (idx > 0)
{
line_length += (new_point - last_point).magnitude;
while (letter_idx < letters.Length && line_length > letters_offset)
{
// calculate relative progress between the last two points which would represent the next letters offset distance
progress = curve_idx + ((idx - 1) * progress_inc) + (((letters_offset - last_line_length) / (line_length - last_line_length)) * progress_inc);
letter_progressions [letter_idx] = progress;
letter_idx++;
// Work out offset value for next letter
if (letter_idx < letters.Length && !letters [letter_idx].StubInstance && letters [letter_idx].VisibleCharacter)
{
letter = letters [letter_idx];
if (letter.m_progression_variables.LineValue > line_number)
{
line_number = letter.m_progression_variables.LineValue;
// Set a new base offset value to that of the first letter of this new line
base_letters_offset = letter.BaseVerticesCenter.x / anim_manager.AnimationInterface.MovementScale - (letter.Width / anim_manager.AnimationInterface.MovementScale) / 2;
curve_idx = 0;
idx = -1;
line_length = 0;
}
// Setup letter offset value
letters_offset = ((letter.BaseVerticesCenter.x / anim_manager.AnimationInterface.MovementScale) - base_letters_offset);
// Handle alignment-specific offset values
offsetBasedOnTextAlignment();
}
}
if (letter_idx == letters.Length)
{
reachedEndOfLetters = true;
break;
}
}
last_point = new_point;
last_line_length = line_length;
}
}
// Handle any letters which didn't have room to fit on the line
for (int idx = letter_idx; idx < letters.Length; idx++)
{
letter = letters[letter_idx];
if (letter.m_progression_variables.LineValue == line_number)
{
// Force remaining letters to the end of the line
letter_progressions [idx] = m_pointData.m_numActiveCurvePoints - 1.001f;
}
else if (letter.VisibleCharacter && !letter.StubInstance)
{
line_number = letter.m_progression_variables.LineValue;
line_length = 0;
// Set a new base offset value to that of the first letter of this new line
base_letters_offset = letter.BaseVerticesCenter.x / anim_manager.AnimationInterface.MovementScale - (letter.Width / anim_manager.AnimationInterface.MovementScale) / 2;
// Setup letter offset value
letters_offset = ((letter.BaseVerticesCenter.x / anim_manager.AnimationInterface.MovementScale) - base_letters_offset);
// Handle alignment-specific offset values
offsetBasedOnTextAlignment();
break;
}
letter_idx++;
}
if (letter_idx == letters.Length)
{
reachedEndOfLetters = true;
break;
}
}
// string progressionsString = "";
// for (int i = 0; i < letter_progressions.Length; i++)
// progressionsString += letter_progressions [i] + "\n";
// Debug.Log("Curve Letter Progressions:\n" + progressionsString);
return(letter_progressions);
}