/// <summary>
/// Draw the icon
/// </summary>
protected virtual void Render(DrawArgs drawArgs, Icon icon, Vector3 projectedPoint)
{
if (!icon.isInitialized)
{
icon.Initialize(drawArgs);
}
if (!drawArgs.WorldCamera.ViewFrustum.ContainsPoint(icon.Position))
{
return;
}
// Check icons for within "visual" range
double distanceToIcon = Vector3.Length(icon.Position - drawArgs.WorldCamera.Position);
if (distanceToIcon > icon.MaximumDisplayDistance)
{
return;
}
if (distanceToIcon < icon.MinimumDisplayDistance)
{
return;
}
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;
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 || icon.NameAlwaysVisible)
{
// 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 rect = new Rectangle(
(int)projectedPoint.X - (labelWidth >> 1),
(int)(projectedPoint.Y - (drawArgs.defaultDrawingFont.Description.Height >> 1)),
labelWidth,
drawArgs.screenHeight);
drawArgs.defaultDrawingFont.DrawText(m_sprite, icon.Name, rect, 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;
Rectangle rect = new Rectangle(
(int)projectedPoint.X + offsetForIcon,
(int)(projectedPoint.Y - (drawArgs.defaultDrawingFont.Description.Height >> 1)),
labelWidth,
drawArgs.screenHeight);
drawArgs.defaultDrawingFont.DrawText(m_sprite, icon.Name, rect, DrawTextFormat.WordBreak, color);
}
}
}
if (iconTexture != null)
{
// Render icon
float xscale = (float)icon.Width / iconTexture.Width;
float yscale = (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;
}
}
protected override void Render(DrawArgs drawArgs, Icon icon, Vector3 projectedPoint)
{
if (!icon.Initialized)
{
icon.Initialize(drawArgs);
return;
}
if (!drawArgs.WorldCamera.ViewFrustum.ContainsPoint(icon.Position))
{
return;
}
// check whether in icon's visual range.
float distanceToIcon = Vector3.Length(icon.Position - drawArgs.WorldCamera.Position);
if (distanceToIcon > icon.MaximumDisplayDistance)
{
return;
}
if (distanceToIcon < icon.MinimumDisplayDistance)
{
return;
}
IconTexture iconTexture = this.GetTexture(icon);
// check is mouse over.
bool isMouseOver = (icon == this.mouseOverIcon);
if (isMouseOver)
{
if (icon.IsSelectable)
{
DrawArgs.MouseCursor = CursorType.Hand;
}
// get icon's description.
string description = icon.Description;
if (description == null)
{
description = icon.ClickableActionURL;
}
if (description != null)
{
// Render the description field.
DrawTextFormat descTextFormat = DrawTextFormat.NoClip;
descTextFormat |= DrawTextFormat.WordBreak;
descTextFormat |= DrawTextFormat.Bottom;
int left = 10;
//if (World.Settings.ShowLayerManager) {
// left += World.Settings.LayerManagerWidth;
//}
Rectangle descRectangle = Rectangle.FromLTRB(left, 10, drawArgs.ScreenWidth - 10, drawArgs.ScreenHeight - 10);
// Draw outline
this.DrawOutline(drawArgs.DefaultDrawingFont, this.m_sprite, description, ref descRectangle, descTextFormat);
// Draw description
drawArgs.DefaultDrawingFont.DrawText(this.m_sprite, description, descRectangle, descTextFormat, descriptionColor);
}
}
int color = isMouseOver ? hotColor : normalColor;
// calculate scale
double scale = (drawArgs.WorldCamera.WorldRadius + icon.Altitude) / (drawArgs.WorldCamera.WorldRadius + distanceToIcon);
scale *= drawArgs.WorldCamera.TargetDistance / distanceToIcon;
//
// render name field.
if (icon.Name != null)
{
Rectangle nameRectangle = drawArgs.DefaultDrawingFont.MeasureString(this.m_sprite, icon.Name, DrawTextFormat.Center, color);
nameRectangle.X = (int)projectedPoint.X - (nameRectangle.Width >> 1);
if (iconTexture == null)
{
// by zzm start
nameRectangle.Y = (int)projectedPoint.Y - (drawArgs.DefaultDrawingFont.Description.Height >> 1);
// by zzm end
this.DrawOutline(drawArgs.DefaultDrawingFont, this.m_sprite, icon.Name, ref nameRectangle, DrawTextFormat.Center);
drawArgs.DefaultDrawingFont.DrawText(this.m_sprite, icon.Name, nameRectangle, DrawTextFormat.Center, color);
}
else
{
// adjust text to make room for icon.
int spacing = 10;
int offsetForIcon = (int)(icon.Height * scale) + spacing;
nameRectangle.Y = (int)projectedPoint.Y - offsetForIcon - (drawArgs.DefaultDrawingFont.Description.Height >> 1);
this.DrawOutline(drawArgs.DefaultDrawingFont, this.m_sprite, icon.Name, ref nameRectangle, DrawTextFormat.Center);
drawArgs.DefaultDrawingFont.DrawText(this.m_sprite, icon.Name, nameRectangle, DrawTextFormat.Center, color);
}
}
if (iconTexture != null)
{
// render icon
// get icon's current scale
float xScale = (float)scale; //icon.Width / iconTexture.Width;
float yScale = (float)scale; //icon.Height / iconTexture.Height;
this.m_sprite.Transform = Matrix.Scaling(xScale, yScale, 0);
this.m_sprite.Transform *= Matrix.Translation(projectedPoint.X, projectedPoint.Y, 0);
this.m_sprite.Draw(iconTexture.Texture, new Vector3(iconTexture.Width, iconTexture.Height, 0), Vector3.Empty, color);
this.m_sprite.Transform = Matrix.Identity;
}
}
public override void Initialize(DrawArgs drawArgs)
{
if (!isOn)
{
return;
}
if (m_sprite != null)
{
m_sprite.Dispose();
m_sprite = null;
}
m_sprite = new Sprite(drawArgs.device);
System.TimeSpan smallestRefreshInterval = System.TimeSpan.MaxValue;
// Load all textures
foreach (RenderableObject ro in m_children)
{
Icon icon = ro as Icon;
if (icon == null)
{
// Child is not an icon
if (ro.IsOn)
{
ro.Initialize(drawArgs);
}
continue;
}
if (icon.RefreshInterval.TotalMilliseconds != 0 && icon.RefreshInterval != TimeSpan.MaxValue && icon.RefreshInterval < smallestRefreshInterval)
{
smallestRefreshInterval = icon.RefreshInterval;
}
// Child is an icon
icon.Initialize(drawArgs);
object key = null;
IconTexture iconTexture = null;
if (icon.TextureFileName != null && icon.TextureFileName.Length > 0)
{
if (icon.TextureFileName.ToLower().StartsWith("http://") && icon.SaveFilePath != null)
{
//download it
try
{
WorldWind.Net.WebDownload webDownload = new WorldWind.Net.WebDownload(icon.TextureFileName);
webDownload.DownloadType = WorldWind.Net.DownloadType.Unspecified;
System.IO.FileInfo saveFile = new System.IO.FileInfo(icon.SaveFilePath);
if (!saveFile.Directory.Exists)
{
saveFile.Directory.Create();
}
webDownload.DownloadFile(saveFile.FullName);
}
catch {}
iconTexture = (IconTexture)m_textures[icon.SaveFilePath];
if (iconTexture == null)
{
key = icon.SaveFilePath;
iconTexture = new IconTexture(drawArgs.device, icon.SaveFilePath);
}
}
else
{
// Icon image from file
iconTexture = (IconTexture)m_textures[icon.TextureFileName];
if (iconTexture == null)
{
key = icon.TextureFileName;
iconTexture = new IconTexture(drawArgs.device, icon.TextureFileName);
}
}
}
else
{
// Icon image from bitmap
if (icon.Image != null)
{
iconTexture = (IconTexture)m_textures[icon.Image];
if (iconTexture == null)
{
// Create new texture from image
key = icon.Image;
iconTexture = new IconTexture(drawArgs.device, icon.Image);
}
}
}
if (iconTexture == null)
{
// No texture set
continue;
}
if (key != null)
{
// New texture, cache it
m_textures.Add(key, iconTexture);
// Use default dimensions if not set
if (icon.Width == 0)
{
icon.Width = iconTexture.Width;
}
if (icon.Height == 0)
{
icon.Height = iconTexture.Height;
}
}
}
// Compute mouse over bounding boxes
foreach (RenderableObject ro in m_children)
{
Icon icon = ro as Icon;
if (icon == null)
{
// Child is not an icon
continue;
}
if (GetTexture(icon) == null)
{
// Label only
icon.SelectionRectangle = drawArgs.defaultDrawingFont.MeasureString(null, icon.Name, DrawTextFormat.None, 0);
}
else
{
// Icon only
icon.SelectionRectangle = new Rectangle(0, 0, icon.Width, icon.Height);
}
// Center the box at (0,0)
icon.SelectionRectangle.Offset(-icon.SelectionRectangle.Width / 2, -icon.SelectionRectangle.Height / 2);
}
if (refreshTimer == null && smallestRefreshInterval != TimeSpan.MaxValue)
{
refreshTimer = new System.Timers.Timer(smallestRefreshInterval.TotalMilliseconds);
refreshTimer.Elapsed += new System.Timers.ElapsedEventHandler(refreshTimer_Elapsed);
refreshTimer.Start();
}
isInitialized = true;
}
