/// <summary>
/// Draws all items contained in a given render queue
/// </summary>
/// <param name="queue">render queue</param>
/// <param name="x1">x1-position</param>
/// <param name="y1">y1-position</param>
/// <param name="z1">z1-position</param>
/// <param name="x2">x2-position</param>
/// <param name="y2">y2-position</param>
/// <param name="z2">z2-position</param>
/// <param name="color">base color for items not containing individual colors</param>
/// <remarks><para>The render queue must contain only keys for already cached items!</para>
/// <para>The color parameter serves as a global color definition. It may be overwritten
/// by individual color specifications of the queue items.</para>
/// <para>Use this function to draw the render queue in world coords. The position parameters mark the upper left
/// and lower right corner of the quads to contain the render queue content.</para>
/// </remarks>
public void Draw(ILRenderQueue queue,
float x1, float y1, float z1, float x2, float y2, float z2,
Color color)
{
float x, y, xm, ym;
xm = (x2 - x1) / (queue.Size.Width);
ym = (y2 - y1) / (queue.Size.Height);
x = 0.5f; y = 0.5f;
int lineHeight = 0;
m_textureManager.Reset();
GLColor3(color);
foreach (ILRenderQueueItem item in queue)
{
// special symbols & control sequences
switch (item.Key)
{
case "\r":
x = 0.5f;
break;
case "\n":
x = 0.5f;
y += lineHeight;
lineHeight = 0;
break;
default:
//since textures (may) lay on different sheets in GL memory,
// we cannot switch them in between Begin() and End(),
// we must start a new Begin with each Quad :(
// possible workaround: If only one sheet is used, draw all
// quads at once.
ILTextureData textData = m_textureManager.GetTextureItem(item.Key, true);
if (item.Color != Color.Empty)
{
GLColor3(item.Color);
}
else
{
GLColor3(color);
}
GL.Begin(BeginMode.Quads);
RectangleF rectF = textData.TextureRectangle;
GL.TexCoord2(rectF.Left, rectF.Bottom);
GL.Vertex3(x * xm + x1, (y + textData.Height + item.Offset.Y - 1) * ym + y1, z1); // ul
GL.TexCoord2(rectF.Left, rectF.Top);
GL.Vertex3(x * xm + x1, (y + item.Offset.Y) * ym + y1, z1); // bl
x += textData.Width - 1;
GL.TexCoord2(rectF.Right, rectF.Top);
GL.Vertex3(x * xm + x1, (y + item.Offset.Y) * ym + y1, z1); // br
GL.TexCoord2(rectF.Right, rectF.Bottom);
GL.Vertex3(x * xm + x1, (y + textData.Height + item.Offset.Y - 1) * ym + y1, z1); // tr
if (textData.Height > lineHeight)
{
lineHeight = textData.Height;
}
GL.End();
#if BOUNDINGBOXES_ITEM
//// define DEBUG symbol to draw bounding box around each item (debug feature)
// todo: modify to draw in world coords if needed!!
//GL.Color3(Color.Red);
//GL.Begin(BeginMode.LineLoop);
// w-= textData.Width;
// GL.Vertex2(w,h + textData.Height); // ul
// GL.Vertex2(w,h); // bl
// w += textData.Width;
// GL.Vertex2(w,h); // br
// GL.Vertex2(w,h + textData.Height); // tr
//GL.End();
#endif
break;
}
}
#if BOUNDINGBOXES
//// define debugsymbol "BOUNDINGBOXES", to draw bounding box around whole expression
// todo: modify to draw in world coords if needed!!
//GL.Disable(EnableCap.Texture2D);
//GL.Color3(Color.Red);
//GL.LineWidth(1);
//GL.Begin(BeginMode.LineLoop);
// GL.Vertex2(0,0); // ul
// GL.Vertex2(0,queue.Size.Height); // bl
// GL.Vertex2(queue.Size.Width,queue.Size.Height); // br
// GL.Vertex2(queue.Size.Width,0); // tr
//GL.End();
//GL.Enable(EnableCap.Texture2D);
#endif
}
/// <summary>
/// Draws all items contained in a given render queue
/// </summary>
/// <param name="queue">render queue</param>
/// <param name="location">starting point</param>
/// <param name="orientation">orientation for the whole queues output</param>
/// <param name="color">starting color</param>
/// <remarks><para>The render queue must contain only keys for already cached items!</para>
/// <para>The color parameter serves as a global color definition. It may be overridem
/// by individual color specifications of the queue items.</para>
/// </remarks>
public void Draw(ILRenderQueue queue,
System.Drawing.Point location,
TextOrientation orientation,
Color color)
{
float w, h;
if (String.IsNullOrEmpty(queue.Expression.Trim()))
{
return;
}
w = queue.Size.Width;
h = queue.Size.Height;
// compensate for unexact glx.MeasureString results... (to be fixed!)
//w *= 1.09f;
//h *= 1.09f;
if (orientation == TextOrientation.Vertical)
{
GL.Rotate(90, 0, 0, 1);
}
GL.GetFloat(GetPName.ModelviewMatrix, m_curPosition);
m_curPosition[12] = location.X;
m_curPosition[13] = location.Y;
GL.LoadMatrix(m_curPosition);
m_textureManager.Reset();
w = 0.5f; h = 0.5f;
int lineHeight = 0;
float drawPosY;
float xMin = float.MaxValue; // relative to label (include rotation)
float yMin = float.MaxValue;
float xMax = float.MinValue;
float yMax = float.MinValue;
GLColor3(color);
foreach (ILRenderQueueItem item in queue)
{
// special symbols & control sequences
switch (item.Key)
{
case "\r":
w = 0.5f;
break;
case "\n":
w = 0.5f;
h += lineHeight;
lineHeight = 0;
break;
default:
//since textures (may) lay on different sheets in GL memory,
// we cannot switch them in between Begin() and End(),
// we must start a new Begin with each Quad :(
// possible workaround: If only one sheet is used, draw all
// quads at once.
ILTextureData textData = m_textureManager.GetTextureItem(item.Key, true);
if (item.Color != Color.Empty)
{
GLColor3(item.Color);
}
else
{
GLColor3(color);
}
drawPosY = h + item.Offset.Y;
GL.Begin(BeginMode.Quads);
RectangleF rectF = textData.TextureRectangle;
GL.TexCoord2(rectF.Left, rectF.Bottom);
GL.Vertex2(w, drawPosY + textData.Height - 1); // bl
GL.TexCoord2(rectF.Left, rectF.Top);
GL.Vertex2(w, drawPosY); // tl
if (xMin > w)
{
xMin = w;
}
if (yMin > drawPosY)
{
yMin = drawPosY;
}
w += textData.Width - 1;
GL.TexCoord2(rectF.Right, rectF.Top);
GL.Vertex2(w, drawPosY); // tr
GL.TexCoord2(rectF.Right, rectF.Bottom);
GL.Vertex2(w, drawPosY + textData.Height - 1); // br
if (textData.Height > lineHeight)
{
lineHeight = textData.Height;
}
GL.End();
if (xMax < w)
{
xMax = w;
}
if (yMax < drawPosY + textData.Height - 1)
{
yMax = drawPosY + textData.Height - 1;
}
#if BOUNDINGBOXES_ITEM
// define DEBUG symbol to draw bounding box around each item (debug feature)
GL.Color3(Color.Red);
GL.Begin(BeginMode.LineLoop);
w -= textData.Width;
GL.Vertex2(w, h + textData.Height); // ul
GL.Vertex2(w, h); // bl
w += textData.Width;
GL.Vertex2(w, h); // br
GL.Vertex2(w, h + textData.Height); // tr
GL.End();
#endif
break;
}
}
#if BOUNDINGBOXES
// define debugsymbol "BOUNDINGBOXES", to draw bounding box around whole expression
GL.Disable(EnableCap.Texture2D);
GL.Color3(Color.Red);
GL.LineWidth(1);
GL.Disable(EnableCap.LineStipple);
GL.Begin(BeginMode.LineLoop);
GL.Vertex2(0, 0); // ul
GL.Vertex2(0, queue.Size.Height); // bl
GL.Vertex2(queue.Size.Width, queue.Size.Height); // br
GL.Vertex2(queue.Size.Width, 0); // tr
GL.End();
GL.Enable(EnableCap.Texture2D);
#endif
// check outer limits
if (orientation == TextOrientation.Horizontal)
{
if (m_xMin > location.X + xMin)
{
m_xMin = location.X + xMin;
}
if (m_xMax < location.X + xMax)
{
m_xMax = location.X + xMax;
}
if (m_yMin > location.Y + yMin)
{
m_yMin = location.Y + yMin;
}
if (m_yMax < location.Y + yMax)
{
m_yMax = location.Y + yMax;
}
}
else if (orientation == TextOrientation.Vertical)
{
if (m_xMin > location.X - yMax)
{
m_xMin = location.X - yMax;
}
if (m_xMax < location.X - yMin)
{
m_xMax = location.X - yMin;
}
if (m_yMin > location.Y - xMin)
{
m_yMin = location.Y - xMin;
}
if (m_yMax < location.Y - xMax)
{
m_yMax = location.Y - xMax;
}
}
}
