private void CreateText(double x, double y, double maxWidth)
{
_bitmapText.Clear();
double currentX = 0;
double currentY = 0;
string[] words = _text.Split(' ');
foreach (string word in words)
{
Vector nextWordLength = _font.MeasureFont(word);
if (maxWidth != -1 &&
(currentX + nextWordLength.X) > maxWidth)
{
currentX = 0;
currentY += nextWordLength.Y;
}
string wordWithSpace = word + " "; // add the space character that was removed.
foreach (char c in wordWithSpace)
{
CharacterSprite sprite = _font.CreateSprite(c);
float xOffset = ((float)sprite.Data.XOffset) / 2;
float yOffset = (((float)sprite.Data.Height) * 0.5f) + ((float)sprite.Data.YOffset);
sprite.Sprite.SetPosition(x + currentX + xOffset, y - currentY - yOffset);
currentX += sprite.Data.XAdvance;
_bitmapText.Add(sprite);
}
}
_dimensions = _font.MeasureFont(_text, _maxWidth);
_dimensions.Y = currentY;
SetColor(_color);
}
public Vector MeasureFont(string text, double maxWidth)
{
Vector dimensions = new Vector();
foreach (char c in text)
{
CharacterData data = _characterData[c];
dimensions.X += data.XAdvance;
dimensions.Y = Math.Max(dimensions.Y, data.Height + data.YOffset);
}
return dimensions;
}
private void InitVertexPositions(Vector position, double width, double height)
{
double halfWidth = width / 2;
double halfHeight = height / 2;
// Clockwise creation of two triangles to make a quad.
// TopLeft, TopRight, BottomLeft
_vertexPositions[0] = new Vector(position.X - halfWidth, position.Y + halfHeight, position.Z);
_vertexPositions[1] = new Vector(position.X + halfWidth, position.Y + halfHeight, position.Z);
_vertexPositions[2] = new Vector(position.X - halfWidth, position.Y - halfHeight, position.Z);
// TopRight, BottomRight, BottomLeft
_vertexPositions[3] = new Vector(position.X + halfWidth, position.Y + halfHeight, position.Z);
_vertexPositions[4] = new Vector(position.X + halfWidth, position.Y - halfHeight, position.Z);
_vertexPositions[5] = new Vector(position.X - halfWidth, position.Y - halfHeight, position.Z);
}
public Vector CrossProduct(Vector v)
{
double nx = Y * v.Z - Z * v.Y;
double ny = Z * v.X - X * v.Z;
double nz = X * v.Y - Y * v.X;
return new Vector(nx, ny, nz);
}
public bool Equals(Vector v)
{
return (X == v.X) && (Y == v.Y) && (Z == v.Z);
}
public Vector Subtract(Vector r)
{
return new Vector(X - r.X, Y - r.Y, Z - r.Z);
}
public Vector Add(Vector r)
{
return new Vector(X + r.X, Y + r.Y, Z + r.Z);
}
public Vector Normalise(Vector v)
{
double r = v.Length();
if (r != 0.0) // guard against divide by zero
{
return new Vector(v.X / r, v.Y / r, v.Z / r); // normalise and return
}
else
{
return new Vector(0, 0, 0);
}
}
public double DotProduct(Vector v)
{
return (v.X * X) + (Y * v.Y) + (Z * v.Z);
}
public void DrawImmediateModeVertex(Vector position, Color color, Point uvs)
{
Gl.glColor4f(color.Red, color.Green, color.Blue, color.Alpha);
Gl.glTexCoord2f(uvs.X, uvs.Y);
Gl.glVertex3d(position.X, position.Y, position.Z);
}
public void SetPosition(Vector position)
{
InitVertexPositions(position, GetWidth(), GetHeight());
}