/*
* 更新雷达中的可见区域贴图
*
*
* 分为以下几个步骤：
*
* <1>获得可能在雷达范围中的所有遮挡物
*
* <2>将遮挡物的边界点坐标转换到雷达空间中，并在已经栅格化的雷达空间中填充边界点的深度信息，获得深度图。
*
* <3>用显卡计算出可见区域贴图
*
* */
private void CalRaderMap(Rader rader, IEnumerable <IShelterObj>[] shelterObjGroup)
{
// 获得可能在雷达范围中的所有遮挡物。
List <IShelterObj> sheltersInRader = new List <IShelterObj>(16);
foreach (IEnumerable <IShelterObj> group in shelterObjGroup)
{
foreach (IShelterObj shelter in group)
{
if (shelter.BoundingBox.Intersects(rader.BoundBox))
{
sheltersInRader.Add(shelter);
}
}
}
// 将遮挡物的边界点坐标转换到雷达空间中，并在已经栅格化的雷达空间中填充边界点的深度信息，获得深度图。
rader.depthMap.ClearMap(1);
foreach (IShelterObj shelter in sheltersInRader)
{
rader.depthMap.ApplyShelterObj(rader, shelter);
}
// 用显卡计算出可见区域贴图
raderDrawer.DrawRader(rader);
// 更新各项数据
rader.UpdateTexture();
}
public void ApplyShelterObj(Rader rader, IShelterObj obj)
{
Matrix worldMatrix = obj.WorldTrans;
CircleList <BorderPoint> border = obj.BorderData;
CircleListNode <BorderPoint> lastB = border.First.pre;
Vector2 pInRader = rader.TranslateToRaderSpace(Vector2.Transform(ConvertHelper.PointToVector2(lastB.value.p), worldMatrix));
int lastIndex = IndexOf(pInRader.X);
float lastDepth = pInRader.Y;
CircleListNode <BorderPoint> cur = border.First;
for (int i = 0; i < border.Length; i++)
{
pInRader = rader.TranslateToRaderSpace(Vector2.Transform(ConvertHelper.PointToVector2(cur.value.p), worldMatrix));
int curIndex = IndexOf(pInRader.X);
float curDepth = pInRader.Y;
if (pInRader.X >= -1.1f && pInRader.X <= 1.3f)
{
//this[pInRader.X] = Math.Min( this[pInRader.X], pInRader.Y );
SetValueAtIndex(curIndex, pInRader.Y, obj, i, cur.value.p);
if (curIndex - lastIndex > 1)
{
int overIndex = lastIndex + 1;
while (overIndex != curIndex)
{
float lerp = MathHelper.Lerp(lastDepth, curDepth, (curIndex - overIndex) / (curIndex - lastIndex));
SetValueAtIndex(overIndex, lerp, obj, i, cur.value.p);
overIndex++;
}
}
else if (curIndex - lastIndex < -1)
{
int overIndex = lastIndex - 1;
while (overIndex != curIndex)
{
float lerp = MathHelper.Lerp(lastDepth, curDepth, (curIndex - overIndex) / (curIndex - lastIndex));
SetValueAtIndex(overIndex, lerp, obj, i, cur.value.p);
overIndex--;
}
}
}
lastIndex = curIndex;
lastDepth = curDepth;
cur = cur.next;
}
}
private static ObjVisiBorder CalNonShelterVisiBorder( IHasBorderObj obj, Rader rader )
{
CircleListNode<BorderPoint> curNode = obj.BorderData.First;
CircleList<VisiBordPoint> points = new CircleList<VisiBordPoint>();
for (int i = 0; i < obj.BorderData.Length; i++)
{
if (rader.PointInRader( Vector2.Transform( ConvertHelper.PointToVector2( curNode.value.p ), obj.WorldTrans ) ))
{
points.AddLast( new VisiBordPoint( i, curNode.value.p ) );
}
curNode = curNode.next;
}
if (points.Length != 0)
return new ObjVisiBorder( obj, points );
else
return null;
}
public void DrawRader( Rader rader )
{
try
{
BaseGame.Device.RenderState.DepthBufferEnable = false;
BaseGame.Device.RenderState.DepthBufferWriteEnable = false;
BaseGame.Device.RenderState.AlphaBlendEnable = false;
Texture2D depthMapTex = rader.depthMap.GetMapTexture();
depthMapPara.SetValue( depthMapTex );
raderAngPara.SetValue( rader.Ang );
raderColorPara.SetValue( ColorHelper.ToFloat4( rader.RaderColor ) );
raderRotaMatrixPara.SetValue( rader.RotaMatrix );
renderRaderEffect.CommitChanges();
DepthStencilBuffer old = BaseGame.Device.DepthStencilBuffer;
BaseGame.Device.SetRenderTarget( 0, rader.target );
BaseGame.Device.DepthStencilBuffer = depthBuffer;
BaseGame.Device.Clear( Color.TransparentBlack );
renderRaderEffect.CurrentTechnique = renderRaderEffect.Techniques[0];
renderRaderEffect.Begin();
renderRaderEffect.CurrentTechnique.Passes[0].Begin();
BaseGame.Device.VertexDeclaration = del;
BaseGame.Device.Vertices[0].SetSource( sectorBuffer, 0, del.GetVertexStrideSize( 0 ) );
BaseGame.Device.DrawPrimitives( PrimitiveType.TriangleFan, 0, partSum );
renderRaderEffect.CurrentTechnique.Passes[0].End();
renderRaderEffect.End();
BaseGame.Device.SetRenderTarget( 0, rader.targetSmall );
BaseGame.Device.DepthStencilBuffer = depthBufferSmall;
BaseGame.Device.Clear( Color.TransparentBlack );
renderRaderEffect.CurrentTechnique = renderRaderEffect.Techniques[0];
renderRaderEffect.Begin();
renderRaderEffect.CurrentTechnique.Passes[0].Begin();
BaseGame.Device.VertexDeclaration = del;
BaseGame.Device.Vertices[0].SetSource( sectorBuffer, 0, del.GetVertexStrideSize( 0 ) );
BaseGame.Device.DrawPrimitives( PrimitiveType.TriangleFan, 0, partSum );
renderRaderEffect.CurrentTechnique.Passes[0].End();
renderRaderEffect.End();
BaseGame.Device.SetRenderTarget( 0, null );
BaseGame.Device.DepthStencilBuffer = old;
BaseGame.Device.RenderState.DepthBufferEnable = true;
BaseGame.Device.RenderState.DepthBufferWriteEnable = true;
}
catch (Exception ex)
{
Log.Write( ex.Message );
}
}
public void DrawRader(Rader rader)
{
try
{
BaseGame.Device.RenderState.DepthBufferEnable = false;
BaseGame.Device.RenderState.DepthBufferWriteEnable = false;
BaseGame.Device.RenderState.AlphaBlendEnable = false;
Texture2D depthMapTex = rader.depthMap.GetMapTexture();
depthMapPara.SetValue(depthMapTex);
raderAngPara.SetValue(rader.Ang);
raderColorPara.SetValue(ColorHelper.ToFloat4(rader.RaderColor));
raderRotaMatrixPara.SetValue(rader.RotaMatrix);
renderRaderEffect.CommitChanges();
DepthStencilBuffer old = BaseGame.Device.DepthStencilBuffer;
BaseGame.Device.SetRenderTarget(0, rader.target);
BaseGame.Device.DepthStencilBuffer = depthBuffer;
BaseGame.Device.Clear(Color.TransparentBlack);
renderRaderEffect.CurrentTechnique = renderRaderEffect.Techniques[0];
renderRaderEffect.Begin();
renderRaderEffect.CurrentTechnique.Passes[0].Begin();
BaseGame.Device.VertexDeclaration = del;
BaseGame.Device.Vertices[0].SetSource(sectorBuffer, 0, del.GetVertexStrideSize(0));
BaseGame.Device.DrawPrimitives(PrimitiveType.TriangleFan, 0, partSum);
renderRaderEffect.CurrentTechnique.Passes[0].End();
renderRaderEffect.End();
BaseGame.Device.SetRenderTarget(0, rader.targetSmall);
BaseGame.Device.DepthStencilBuffer = depthBufferSmall;
BaseGame.Device.Clear(Color.TransparentBlack);
renderRaderEffect.CurrentTechnique = renderRaderEffect.Techniques[0];
renderRaderEffect.Begin();
renderRaderEffect.CurrentTechnique.Passes[0].Begin();
BaseGame.Device.VertexDeclaration = del;
BaseGame.Device.Vertices[0].SetSource(sectorBuffer, 0, del.GetVertexStrideSize(0));
BaseGame.Device.DrawPrimitives(PrimitiveType.TriangleFan, 0, partSum);
renderRaderEffect.CurrentTechnique.Passes[0].End();
renderRaderEffect.End();
BaseGame.Device.SetRenderTarget(0, null);
BaseGame.Device.DepthStencilBuffer = old;
BaseGame.Device.RenderState.DepthBufferEnable = true;
BaseGame.Device.RenderState.DepthBufferWriteEnable = true;
}
catch (Exception ex)
{
Log.Write(ex.Message);
}
}
/*
* 更新雷达中的可见区域贴图
*
*
* 分为以下几个步骤：
*
* <1>获得可能在雷达范围中的所有遮挡物
*
* <2>将遮挡物的边界点坐标转换到雷达空间中，并在已经栅格化的雷达空间中填充边界点的深度信息，获得深度图。
*
* <3>用显卡计算出可见区域贴图
*
* */
private void CalRaderMap( Rader rader, IEnumerable<IShelterObj>[] shelterObjGroup )
{
// 获得可能在雷达范围中的所有遮挡物。
List<IShelterObj> sheltersInRader = new List<IShelterObj>( 16 );
foreach (IEnumerable<IShelterObj> group in shelterObjGroup)
{
foreach (IShelterObj shelter in group)
{
if (shelter.BoundingBox.Intersects( rader.BoundBox ))
sheltersInRader.Add( shelter );
}
}
// 将遮挡物的边界点坐标转换到雷达空间中，并在已经栅格化的雷达空间中填充边界点的深度信息，获得深度图。
rader.depthMap.ClearMap( 1 );
foreach (IShelterObj shelter in sheltersInRader)
{
rader.depthMap.ApplyShelterObj( rader, shelter );
}
// 用显卡计算出可见区域贴图
raderDrawer.DrawRader( rader );
// 更新各项数据
rader.UpdateTexture();
}
public void ApplyShelterObj( Rader rader, IShelterObj obj )
{
Matrix worldMatrix = obj.WorldTrans;
CircleList<BorderPoint> border = obj.BorderData;
CircleListNode<BorderPoint> lastB = border.First.pre;
Vector2 pInRader = rader.TranslateToRaderSpace( Vector2.Transform( ConvertHelper.PointToVector2( lastB.value.p ), worldMatrix ) );
int lastIndex = IndexOf( pInRader.X );
float lastDepth = pInRader.Y;
CircleListNode<BorderPoint> cur = border.First;
for (int i = 0; i < border.Length; i++)
{
pInRader = rader.TranslateToRaderSpace( Vector2.Transform( ConvertHelper.PointToVector2( cur.value.p ), worldMatrix ) );
int curIndex = IndexOf( pInRader.X );
float curDepth = pInRader.Y;
if (pInRader.X >= -1.1f && pInRader.X <= 1.3f)
{
//this[pInRader.X] = Math.Min( this[pInRader.X], pInRader.Y );
SetValueAtIndex( curIndex, pInRader.Y, obj, i, cur.value.p );
if (curIndex - lastIndex > 1)
{
int overIndex = lastIndex + 1;
while (overIndex != curIndex)
{
float lerp = MathHelper.Lerp( lastDepth, curDepth, (curIndex - overIndex) / (curIndex - lastIndex) );
SetValueAtIndex( overIndex, lerp, obj, i, cur.value.p );
overIndex++;
}
}
else if (curIndex - lastIndex < -1)
{
int overIndex = lastIndex - 1;
while (overIndex != curIndex)
{
float lerp = MathHelper.Lerp( lastDepth, curDepth, (curIndex - overIndex) / (curIndex - lastIndex) );
SetValueAtIndex( overIndex, lerp, obj, i, cur.value.p );
overIndex--;
}
}
}
lastIndex = curIndex;
lastDepth = curDepth;
cur = cur.next;
}
}