/// <summary>
/// Reduces the alpha of the decalTriangle if it's in front of the decal position.
/// The further it is, the lower alpha it gets.
/// </summary>
private static void AdjustAlphaByDistance(Vector3 normal, float decalSize, Vector3 position,
MyDecalTriangle decalTriangle)
{
Vector3 displacement0 = decalTriangle.Position0 - position;
var dot0 = Vector3.Dot(displacement0, normal) / decalSize;
if (dot0 > 0)
{
float alignment0 = 1 - dot0;
decalTriangle.Color0.W *= alignment0;
}
Vector3 displacement1 = decalTriangle.Position1 - position;
var dot1 = Vector3.Dot(displacement1, normal) / decalSize;
if (dot1 > 0)
{
float alignment1 = 1 - dot1;
decalTriangle.Color1.W *= alignment1;
}
Vector3 displacement2 = decalTriangle.Position2 - position;
var dot2 = Vector3.Dot(displacement2, normal) / decalSize;
if (dot2 > 0)
{
float alignment2 = 1 - dot2;
decalTriangle.Color2.W *= alignment2;
}
}
// Checks if buffer isn't full at 80% (or something like that). If is, we start fadeing-out first 20% triangles (or something like that). But always all triangles of a decal.
void CheckIfBufferIsFull()
{
if (m_status == MyDecalsBufferState.FADING_OUT_ALL)
{
return;
}
else if (m_status == MyDecalsBufferState.FADING_OUT_ONLY_BEGINNING)
{
if ((MyRender.RenderTimeInMS - m_fadingOutStartTime) > MyDecalsConstants.DECALS_FADE_OUT_INTERVAL_MILISECONDS)
{
// If fading-out phase finished, we change state and remove faded-out triangles
for (int i = 0; i < m_fadingOutRealTriangleCount; i++)
{
MyDecalTriangle triangle = m_trianglesQueue.Dequeue();
triangle.Close();
m_freeTriangles.Push(triangle);
}
m_status = MyDecalsBufferState.READY;
}
}
else
{
if (m_trianglesQueue.Count >= m_fadingOutStartLimit)
{
// If we get here, buffer is close to be full, so we start fade-out phase
m_fadingOutRealTriangleCount = GetFadingOutRealTriangleCount();
m_status = MyDecalsBufferState.FADING_OUT_ONLY_BEGINNING;
m_fadingOutStartTime = (int)MyRender.RenderTimeInMS;
}
}
}
// We can just erase decal triangles, because here we don't have 'free triangles stack' as voxel decals do.
public void Clear(bool destroy = false)
{
while (m_trianglesQueue.Count > 0)
{
MyDecalTriangle triangle = m_trianglesQueue.Dequeue();
triangle.Close();
m_freeTriangles.Push(triangle);
}
if (destroy)
{
RenderObject = null;
}
}
// We can't just erase decal triangles. We need to push them back into 'free triangles stack'. So we do it here.
public void Clear(bool destroy = false)
{
while (m_trianglesQueue.Count > 0)
{
MyDecalTriangle fadedoutTriangle = m_trianglesQueue.Dequeue();
fadedoutTriangle.Close();
m_freeTriangles.Push(fadedoutTriangle);
}
if (destroy)
{
VoxelCell = null;
}
}
public void Add(MyDecalTriangle_Data triangle, int remainingTrianglesOfThisDecal, Vector3D position, float lightSize, float emissivity)
{
// We can't add triangles while fading out
//if (m_status == MyDecalsBufferState.FADING_OUT) return;
MyDecalTriangle decalTriangle = m_freeTriangles.Pop();
decalTriangle.Start(lightSize);
decalTriangle.Emissivity = emissivity;
//decalTriangle.RandomOffset = MyMwcUtils.GetRandomFloat(0.0f, MathHelper.Pi);
decalTriangle.RandomOffset = (float)MyRender.RenderTimeInMS;
decalTriangle.Position = position;
// We must repack vertex positions before copying to new triange, to avoid Z-fight.
decalTriangle.Position0 = triangle.Vertexes.Vertex0;
decalTriangle.Position1 = triangle.Vertexes.Vertex1;
decalTriangle.Position2 = triangle.Vertexes.Vertex2;
// Texture coords
decalTriangle.TexCoord0 = triangle.TexCoords.TexCoord0;
decalTriangle.TexCoord1 = triangle.TexCoords.TexCoord1;
decalTriangle.TexCoord2 = triangle.TexCoords.TexCoord2;
// Alpha
decalTriangle.Color0 = triangle.Colors.Color0;
decalTriangle.Color1 = triangle.Colors.Color1;
decalTriangle.Color2 = triangle.Colors.Color2;
//AdjustAlphaByDistance(normal, decalSize, position, decalTriangle);
// Bump mapping
decalTriangle.Normal0 = triangle.Normals.Normal0;
decalTriangle.Normal1 = triangle.Normals.Normal1;
decalTriangle.Normal2 = triangle.Normals.Normal2;
/*
* decalTriangle.Tangent0 = triangle.Tangents.Normal0;
* decalTriangle.Tangent1 = triangle.Tangents.Normal1;
* decalTriangle.Tangent2 = triangle.Tangents.Normal2;
*/
decalTriangle.RemainingTrianglesOfThisDecal = remainingTrianglesOfThisDecal;
m_trianglesQueue.Enqueue(decalTriangle);
}
public void Add(MyDecalTriangle_Data triangle, int remainingTrianglesOfThisDecal, Vector3D position, float lightSize, float emissivity)
{
MyDecalTriangle decalTriangle = m_freeTriangles.Pop();
decalTriangle.Start(lightSize);
decalTriangle.Emissivity = emissivity;
//decalTriangle.RandomOffset = MyMwcUtils.GetRandomFloat(0.0f, MathHelper.Pi);
decalTriangle.RandomOffset = MyRender.RenderTimeInMS;
decalTriangle.Position = position;
// We must repack vertex positions before copying to new triange, to avoid Z-fight.
decalTriangle.Position0 = triangle.Vertexes.Vertex0;
decalTriangle.Position1 = triangle.Vertexes.Vertex1;
decalTriangle.Position2 = triangle.Vertexes.Vertex2;
// Texture coords
decalTriangle.TexCoord0 = triangle.TexCoords.TexCoord0;
decalTriangle.TexCoord1 = triangle.TexCoords.TexCoord1;
decalTriangle.TexCoord2 = triangle.TexCoords.TexCoord2;
// Alpha
decalTriangle.Color0 = triangle.Colors.Color0;
decalTriangle.Color1 = triangle.Colors.Color1;
decalTriangle.Color2 = triangle.Colors.Color2;
// Bump mapping
decalTriangle.Normal0 = triangle.Normals.Normal0;
decalTriangle.Normal1 = triangle.Normals.Normal1;
decalTriangle.Normal2 = triangle.Normals.Normal2;
/*
* decalTriangle.Tangent0 = triangle.Tangents.Normal0;
* decalTriangle.Tangent1 = triangle.Tangents.Normal1;
* decalTriangle.Tangent2 = triangle.Tangents.Normal2;
*/
decalTriangle.Draw = true;
decalTriangle.RemainingTrianglesOfThisDecal = remainingTrianglesOfThisDecal;
m_trianglesQueue.Enqueue(decalTriangle);
}
public static float UpdateDecalEmissivity(MyDecalTriangle decalTriangle, float alpha, MyRenderObject renderObject)
{
float emisivity = 0;
if (decalTriangle.Emissivity > 0)
{
//emisivity = (float)(Math.Sin(decalTriangle.RandomOffset + decalTriangle.RandomOffset * MySandboxGame.TotalGamePlayTimeInMilliseconds / 1000.0f)) * 0.4f + 0.7f;
// 2 seconds default, more emissive lit longer
float stableLength = 2000 * decalTriangle.Emissivity;
if ((MyRender.RenderTimeInMS - decalTriangle.RandomOffset) < stableLength)
emisivity = 1;
else
{
emisivity = (float)(500 - (MyRender.RenderTimeInMS - stableLength - decalTriangle.RandomOffset)) / 500.0f;
if (emisivity < 0)
emisivity = 0;
}
emisivity *= decalTriangle.Emissivity;
if (emisivity > 0)
{
Color color = MyDecalsConstants.PROJECTILE_DECAL_COLOR;
Vector3D position;
MyRenderTransformObject transformObject = renderObject as MyRenderTransformObject;
if (transformObject != null)
{
position = Vector3D.Transform(decalTriangle.Position, transformObject.WorldMatrix);
}
else
if (renderObject is MyManualCullableRenderObject)
{
position = Vector3D.Transform(decalTriangle.Position, (renderObject as MyManualCullableRenderObject).WorldMatrix);
}
else
{
position = decalTriangle.Position;
}
MyTransparentGeometry.AddPointBillboard(
"DecalGlare",
color * alpha,
(Vector3)position,
1.5f * emisivity,
0);
if (decalTriangle.Light != null)
{
decalTriangle.Light.Color = color;
decalTriangle.Light.SetPosition(position);
float range = Math.Max(3 * emisivity * alpha, 0.1f);
decalTriangle.Light.Range = range;
}
}
}
return emisivity;
}
public static float UpdateDecalEmissivity(MyDecalTriangle decalTriangle, float alpha, MyRenderObject renderObject)
{
float emisivity = 0;
if (decalTriangle.Emissivity > 0)
{
//emisivity = (float)(Math.Sin(decalTriangle.RandomOffset + decalTriangle.RandomOffset * MySandboxGame.TotalGamePlayTimeInMilliseconds / 1000.0f)) * 0.4f + 0.7f;
// 2 seconds default, more emissive lit longer
float stableLength = 2000 * decalTriangle.Emissivity;
if ((MyRender.RenderTimeInMS - decalTriangle.RandomOffset) < stableLength)
{
emisivity = 1;
}
else
{
emisivity = (float)(500 - (MyRender.RenderTimeInMS - stableLength - decalTriangle.RandomOffset)) / 500.0f;
if (emisivity < 0)
{
emisivity = 0;
}
}
emisivity *= decalTriangle.Emissivity;
if (emisivity > 0)
{
Color color = MyDecalsConstants.PROJECTILE_DECAL_COLOR;
Vector3D position;
MyRenderTransformObject transformObject = renderObject as MyRenderTransformObject;
if (transformObject != null)
{
position = Vector3D.Transform(decalTriangle.Position, transformObject.WorldMatrix);
}
else
if (renderObject is MyManualCullableRenderObject)
{
position = Vector3D.Transform(decalTriangle.Position, (renderObject as MyManualCullableRenderObject).WorldMatrix);
}
else
{
position = decalTriangle.Position;
}
MyTransparentGeometry.AddPointBillboard(
"DecalGlare",
color * alpha,
(Vector3)position,
1.5f * emisivity,
0);
if (decalTriangle.Light != null)
{
decalTriangle.Light.Color = color;
decalTriangle.Light.SetPosition(position);
float range = Math.Max(3 * emisivity * alpha, 0.1f);
decalTriangle.Light.Range = range;
}
}
}
return(emisivity);
}