public override void Render(DrawArgs drawArgs)
{
if(!isOn)
return;
if(!isInitialized)
return;
Vector3 referenceCenter = new Vector3(
(float)drawArgs.WorldCamera.ReferenceCenter.X,
(float)drawArgs.WorldCamera.ReferenceCenter.Y,
(float)drawArgs.WorldCamera.ReferenceCenter.Z);
// First render everything except icons
foreach(RenderableObject ro in m_children)
{
if(ro is RIcon)
continue;
if(!ro.IsOn)
continue;
// Child is not an icon
ro.Render(drawArgs);
}
labelRectangles.Clear();
int closestIconDistanceSquared = int.MaxValue;
RIcon closestIcon = null;
// Now render just the icons
m_sprite.Begin(SpriteFlags.AlphaBlend);
foreach(RenderableObject ro in m_children)
{
if(!ro.IsOn)
continue;
RIcon icon = ro as RIcon;
if(icon == null)
continue;
// Find closest mouse-over icon
Vector3 projectedPoint = drawArgs.WorldCamera.Project(icon.Position - referenceCenter);
// Ashish Datta - Show/Hide the description bubble.
if (icon.IsDescriptionVisible == true)
{
if (!drawArgs.WorldCamera.ViewFrustum.ContainsPoint(icon.Position))
{
icon.DescriptionBubble.Hide();
icon.IsDescriptionVisible = false;
}
else
{
if (icon.DescriptionBubble.isVisible == true)
{
icon.DescriptionBubble.Location = new Point((int)projectedPoint.X + (icon.Width/4), (int)projectedPoint.Y);
icon.DescriptionBubble.Show();
if(icon.DescriptionBubble.HTMLIsSet == false)
icon.DescriptionBubble.SetHTML(icon.Description);
icon.DescriptionBubble.BringToFront();
}
}
}
int dx = DrawArgs.LastMousePosition.X - (int)projectedPoint.X;
int dy = DrawArgs.LastMousePosition.Y - (int)projectedPoint.Y;
if( icon.SelectionRectangle.Contains( dx, dy ) )
{
// Mouse is over, check whether this icon is closest
int distanceSquared = dx*dx + dy*dy;
if(distanceSquared < closestIconDistanceSquared)
{
closestIconDistanceSquared = distanceSquared;
closestIcon = icon;
}
}
if(icon != mouseOverIcon)
Render(drawArgs, icon, projectedPoint);
}
labelRectangles.Clear();
// Render the mouse over icon last (on top)
if(mouseOverIcon != null)
Render(drawArgs, mouseOverIcon, drawArgs.WorldCamera.Project(mouseOverIcon.Position - referenceCenter));
mouseOverIcon = closestIcon;
m_sprite.End();
}
/// <summary>
/// Retrieve an icon's texture
/// </summary>
private IconTexture GetTexture(RIcon icon)
{
object key = icon.Image;
if(key==null)
return null;
IconTexture res = (IconTexture)m_textures[key];
return res;
}
/// <summary>
/// Adds an icon to this layer. Deprecated.
/// </summary>
internal void AddIcon(RIcon icon)
{
icon.ParentList = this;
Add(icon);
}
/// <summary>
/// Draw the icon
/// </summary>
protected virtual void Render(DrawArgs drawArgs, RIcon icon, Vector3 projectedPoint)
{
if (!icon.isInitialized)
icon.Initialize(drawArgs);
if(!drawArgs.WorldCamera.ViewFrustum.ContainsPoint(icon.Position))
return;
Vector3 referenceCenter = new Vector3(
(float)drawArgs.WorldCamera.ReferenceCenter.X,
(float)drawArgs.WorldCamera.ReferenceCenter.Y,
(float)drawArgs.WorldCamera.ReferenceCenter.Z);
IconTexture iconTexture = GetTexture(icon);
bool isMouseOver = icon == mouseOverIcon;
if(isMouseOver)
{
// Mouse is over
isMouseOver = true;
if(icon.isSelectable)
DrawArgs.MouseCursor = CursorType.Hand;
string description = icon.Description;
// Ashish Datta - Commented. Descriptions will appear in bubbles not on the bottom of the screen.
/*
if(description==null)
description = icon.ClickableActionURL;
if(description!=null)
{
// Render description field
DrawTextFormat format = DrawTextFormat.NoClip | DrawTextFormat.WordBreak | DrawTextFormat.Bottom;
int left = 10;
if(World.Settings.ShowLayerManager)
left += World.Settings.LayerManagerWidth;
Rectangle rect = Rectangle.FromLTRB(left, 10, drawArgs.screenWidth - 10, drawArgs.screenHeight - 10 );
// Draw outline
drawArgs.defaultDrawingFont.DrawText(
m_sprite, description,
rect,
format, 0xb0 << 24 );
rect.Offset(2,0);
drawArgs.defaultDrawingFont.DrawText(
m_sprite, description,
rect,
format, 0xb0 << 24 );
rect.Offset(0,2);
drawArgs.defaultDrawingFont.DrawText(
m_sprite, description,
rect,
format, 0xb0 << 24 );
rect.Offset(-2,0);
drawArgs.defaultDrawingFont.DrawText(
m_sprite, description,
rect,
format, 0xb0 << 24 );
// Draw description
rect.Offset(1,-1);
drawArgs.defaultDrawingFont.DrawText(
m_sprite, description,
rect,
format, descriptionColor );
}*/
}
int color = isMouseOver ? hotColor : normalColor;
if(iconTexture==null || isMouseOver || Settings.ShowAllLabels)
{
// Render label
if(icon.Name != null)
{
// Render name field
const int labelWidth = 1000; // Dummy value needed for centering the text
if(iconTexture==null)
{
// Center over target as we have no bitmap
Rectangle realrect = drawArgs.defaultDrawingFont.MeasureString(m_sprite, icon.Name, DrawTextFormat.WordBreak, color);
realrect.X = (int)projectedPoint.X - (labelWidth>>1);
realrect.Y = (int)(projectedPoint.Y - (drawArgs.defaultDrawingFont.Description.Height >> 1));
bool bDraw = true;
foreach (Rectangle drawnrect in labelRectangles)
{
if (realrect.IntersectsWith(drawnrect))
{
bDraw = false;
break;
}
}
if (bDraw)
{
labelRectangles.Add(realrect);
drawArgs.defaultDrawingFont.DrawText(m_sprite, icon.Name, realrect, DrawTextFormat.Center, color);
}
}
else
{
// Adjust text to make room for icon
int spacing = (int)(icon.Width * 0.3f);
if(spacing>10)
spacing = 10;
int offsetForIcon = (icon.Width>>1) + spacing;
// Text to the right
Rectangle rightrect = drawArgs.defaultDrawingFont.MeasureString(m_sprite, icon.Name, DrawTextFormat.WordBreak, color);
rightrect.X = (int)projectedPoint.X + offsetForIcon;
rightrect.Y = (int)(projectedPoint.Y - (drawArgs.defaultDrawingFont.Description.Height >> 1));
// Text to the left
Rectangle leftrect = drawArgs.defaultDrawingFont.MeasureString(m_sprite, icon.Name, DrawTextFormat.WordBreak, color);
leftrect.X = (int)projectedPoint.X - offsetForIcon - rightrect.Width;
leftrect.Y = (int)(projectedPoint.Y - (drawArgs.defaultDrawingFont.Description.Height >> 1));
bool bDrawRight = true;
bool bDrawLeft = true;
foreach (Rectangle drawnrect in labelRectangles)
{
if (rightrect.IntersectsWith(drawnrect))
{
bDrawRight = false;
}
if (leftrect.IntersectsWith(drawnrect))
{
bDrawLeft = false;
}
if (!bDrawRight && !bDrawLeft)
{
break;
}
}
if (bDrawRight)
{
labelRectangles.Add(rightrect);
drawArgs.defaultDrawingFont.DrawText(m_sprite, icon.Name, rightrect, DrawTextFormat.WordBreak, color);
}
else if (bDrawLeft)
{
labelRectangles.Add(leftrect);
drawArgs.defaultDrawingFont.DrawText(m_sprite, icon.Name, leftrect, DrawTextFormat.WordBreak, color);
}
}
}
}
if (icon.m_drawGroundStick)
{
Vector3 projectedGroundPoint = drawArgs.WorldCamera.Project(icon.m_groundPoint - referenceCenter);
m_groundStick.Begin();
groundStick[0].X = projectedPoint.X;
groundStick[0].Y = projectedPoint.Y;
groundStick[1].X = projectedGroundPoint.X;
groundStick[1].Y = projectedGroundPoint.Y;
m_groundStick.Draw(groundStick, Color.Red.ToArgb());
m_groundStick.End();
}
if(iconTexture!=null)
{
float factor = 1;
if (drawArgs.WorldCamera.Altitude > minIconZoomAltitude)
factor -= (float)((drawArgs.WorldCamera.Altitude - minIconZoomAltitude) / drawArgs.WorldCamera.Altitude);
// Render icon
float xscale = factor * ((float)icon.Width / iconTexture.Width);
float yscale = factor * ((float)icon.Height / iconTexture.Height);
m_sprite.Transform = Matrix.Scaling(xscale, yscale, 0);
if (icon.IsRotated) m_sprite.Transform *= Matrix.RotationZ((float)icon.Rotation.Radians - (float) drawArgs.WorldCamera.Heading.Radians);
m_sprite.Transform *= Matrix.Translation(projectedPoint.X, projectedPoint.Y, 0);
m_sprite.Draw( iconTexture.Texture,
new Vector3(iconTexture.Width>>1, iconTexture.Height>>1,0),
Vector3.Empty,
color);
// Reset transform to prepare for text rendering later
m_sprite.Transform = Matrix.Identity;
}
}
/// <summary>
/// Creates a scaled icon on the globe
/// </summary>
/// <param name="Name">The name of the item</param>
/// <param name="Desc">The description</param>
/// <param name="Lat">The latitude for the icon</param>
/// <param name="Lon">The longitude for the icon</param>
/// <param name="Alt">The altitude to draw the icon at</param>
/// <param name="bitmapPath">The path to the bitmap to show</param>
private void CreateIcon(RIcons layer, string Name, string Desc, string Uri, float Lat, float Lon, float Alt,
Style style, bool bRotated, float rotation, bool bExtrude)
{
// Create the icon and set initial settings
RIcon ic = new RIcon(
Name, // name
Lat, // latitude
Lon, // longitude
style.NormalIcon, // helper
Alt); // altitude
// Set optional icon settings
if (Desc != null)
ic.Description = Desc;
if (Uri != null)
ic.ClickableActionURL = Uri;
if (bRotated)
{
ic.Rotation = Angle.FromDegrees(rotation);
ic.IsRotated = true;
}
ic.m_drawGroundStick = bExtrude;
if (style.NormalIcon != null && bitmapCache.Contains(style.NormalIcon))
{
ic.Image = (Bitmap)bitmapCache[style.NormalIcon];
ic.Height = Double.IsNaN(style.NormalScale) ? IconSizeConstant : (int)(style.NormalScale * Math.Min(((Bitmap)bitmapCache[style.NormalIcon]).Height, IconSizeConstant));
ic.Width = Double.IsNaN(style.NormalScale) ? IconSizeConstant : (int)(style.NormalScale * Math.Min(((Bitmap)bitmapCache[style.NormalIcon]).Width, IconSizeConstant));
}
// Add the icon to the layer
layer.Add(ic);
}