private void Update(EvaluationContext context)
{
var path = Path.GetValue(context);
var mesh = ObjMesh.LoadFromFile(path);
if (mesh == null)
{
Log.Warning($"Can't read file {path}");
return;
}
// Prepare sorting
var sortedVertexIndices = Enumerable.Range(0, mesh.Positions.Count).ToList();
var sorting = Sorting.GetValue(context);
if (sorting != (int)ObjMesh.SortDirections.Ignore)
{
var sortAxisIndex = _sortAxisAndDirections[sorting][0];
var sortDirection = _sortAxisAndDirections[sorting][1];
sortedVertexIndices.Sort((v1, v2) => mesh.Positions[v1][sortAxisIndex].CompareTo(mesh.Positions[v2][sortAxisIndex]) * sortDirection);
}
// Export
var exportMode = (Modes)Mode.GetValue(context);
switch (exportMode)
{
case Modes.AllVertices:
{
//var list = new StructuredList<Point>(pointCount);
Log.Warning("Object mode not implemented", SymbolChildId);
break;
}
case Modes.Vertices_ColorInOrientation:
case Modes.Vertices_GrayscaleInOrientation:
case Modes.Vertices_GrayscaleAsW:
{
if (mesh.Colors.Count == 0)
{
Log.Warning($"{path} doesn't contain colors definitions. You can use MeshLab to export such files.", SymbolChildId);
}
if (mesh.Positions.Count == 0)
{
Log.Warning($"{path} doesn't contain vertex definitions.", SymbolChildId);
}
try
{
_points = new StructuredList <Point>(mesh.Positions.Count);
for (var vertexIndex = 0; vertexIndex < mesh.Positions.Count; vertexIndex++)
{
var sortedVertexIndex = sortedVertexIndices[vertexIndex];
var c = (sortedVertexIndex >= mesh.Colors.Count)
? SharpDX.Vector4.One
: mesh.Colors[sortedVertexIndex];
if (exportMode == Modes.Vertices_GrayscaleAsW)
{
_points.TypedElements[vertexIndex] = new Point()
{
Position = new Vector3(
mesh.Positions[sortedVertexIndex].X,
mesh.Positions[sortedVertexIndex].Y,
mesh.Positions[sortedVertexIndex].Z),
Orientation = Quaternion.Identity,
W = (c.X + c.Y + c.Z) / 3,
};
}
else if (exportMode == Modes.Vertices_GrayscaleInOrientation)
{
var gray = (c.X + c.Y + c.Z) / 3;
_points.TypedElements[vertexIndex] = new Point()
{
Position = new Vector3(
mesh.Positions[sortedVertexIndex].X,
mesh.Positions[sortedVertexIndex].Y,
mesh.Positions[sortedVertexIndex].Z),
Orientation = new Quaternion(gray, gray, gray, 1),
W = 1,
};
}
else
{
_points.TypedElements[vertexIndex] = new Point()
{
Position = new Vector3(
mesh.Positions[sortedVertexIndex].X,
mesh.Positions[sortedVertexIndex].Y,
mesh.Positions[sortedVertexIndex].Z),
Orientation = new Quaternion(c.X, c.Y, c.Z, c.W),
W = 1
};
}
}
Log.Debug($"loaded {path} with and {mesh.Colors.Count} colored points");
}
catch (Exception e)
{
Log.Error("Reading vertices failed " + e);
}
break;
}
case Modes.LinesVertices:
{
try
{
int segmentCount = 0;
int vertexCount = 0;
int lastVertexIndex = -1;
foreach (var line in mesh.Lines)
{
vertexCount++;
if (line.V0 != lastVertexIndex)
{
segmentCount++;
}
lastVertexIndex = line.V2;
}
int countIncludingSeparators = vertexCount + segmentCount * 2;
_points = new StructuredList <Point>(countIncludingSeparators);
var pointIndex = 0;
lastVertexIndex = -1;
foreach (var line in mesh.Lines)
{
if (pointIndex > 0 && line.V0 != lastVertexIndex)
{
_points.TypedElements[pointIndex++] = new Point()
{
Position = new Vector3(
mesh.Positions[sortedVertexIndices[lastVertexIndex]].X,
mesh.Positions[sortedVertexIndices[lastVertexIndex]].Y,
mesh.Positions[sortedVertexIndices[lastVertexIndex]].Z),
W = 1
};
_points.TypedElements[pointIndex++] = Point.Separator();
}
_points.TypedElements[pointIndex++] = new Point()
{
Position = new Vector3(
mesh.Positions[sortedVertexIndices[line.V0]].X,
mesh.Positions[sortedVertexIndices[line.V0]].Y,
mesh.Positions[sortedVertexIndices[line.V0]].Z),
W = 1
};
lastVertexIndex = line.V2;
}
_points.TypedElements[pointIndex] = Point.Separator();
Log.Debug($"loaded {path} with {segmentCount} segments and {vertexCount} points");
}
catch (Exception e)
{
Log.Error("Reading vertices failed " + e);
}
break;
}
}
Points.Value = _points;
}
private void Update(EvaluationContext context)
{
var worldToClipSpace = Matrix.Multiply(context.WorldToCamera, context.CameraToClipSpace);
//Matrix worldToView = context.WorldToCamera * context.CameraProjection;
//var worldToClipSpace = context.WorldToCamera
//var viewToWorld = Matrix.Invert(worldToClipSpace);
var brightness = Brightness.GetValue(context);
var color = Color.GetValue(context);
var randomizeColor = RandomizeColor.GetValue(context);
var size = Size.GetValue(context);
var randomizeSize = RandomizeSize.GetValue(context);
var stretch = Stretch.GetValue(context);
var distanceFromLight = DistanceFromLight.GetValue(context);
var spread = Spread.GetValue(context);
var randomizeSpread = RandomizeSpread.GetValue(context);
var positionFactor = PositionFactor.GetValue(context);
var randomizePosition = RandomizePosition.GetValue(context);
var mixPointLightColor = MixPointLightColor.GetValue(context);
var referencedLightIndex = LightIndex.GetValue(context);
var innerFxZone = InnerFxZone.GetValue(context);
var edgeFxZone = EdgeFxZone.GetValue(context);
var zoneFxScale = FxZoneScale.GetValue(context);
var zoneFxBrightness = FxZoneBrightness.GetValue(context);
var matteBoxZone = MattBoxZone.GetValue(context);
var rand = new Random(RandomSeed.GetValue(context));
var fxZoneMode = (ZoneFxModes)FxZoneMode.GetValue(context);
var rotation = Rotation.GetValue(context);
var rotationSpread = RotationSpread.GetValue(context);
var rotateTowards = (Categories)RotateTowards.GetValue(context);
int startLightIndex = 0;
int endLightIndex = context.PointLights.Count;
_tempList.Clear();
if (brightness > 0.00001f)
{
if (referencedLightIndex >= 0)
{
startLightIndex = referencedLightIndex;
endLightIndex = referencedLightIndex + 1;
}
var aspectRatio = (float)context.RequestedResolution.Width / (float)context.RequestedResolution.Height;
for (int lightIndex = startLightIndex; lightIndex < endLightIndex; lightIndex++)
{
var pointLight = context.PointLights.GetPointLight(lightIndex);
var lightPosDx = pointLight.Position.ToSharpDxVector4(1);
var posInViewDx = SharpDX.Vector4.Transform(lightPosDx, worldToClipSpace);
posInViewDx /= posInViewDx.W;
// Ignore light sources behind
var hideFactor = posInViewDx.Z < 0 ? 0 : 1;
posInViewDx /= posInViewDx.W;
var lightPosInView2D = new Vector2(posInViewDx.X, posInViewDx.Y);
var count = SpriteCount.GetValue(context).Clamp(0, 1000);
if (count != _sprites.NumElements)
{
_sprites = new StructuredList <Sprite>(count);
}
// Render Planes
for (var i = 0; i < count; ++i)
{
var f = count <= 1 ? 0 : ((float)i / (count - 1) - 0.5f);
var positionOnLine = (float)((-distanceFromLight
+ f * spread * 2
+ randomizeSpread * (rand.NextDouble() - 0.5) + 1));
Vector2 objectScreenPos = lightPosInView2D * positionOnLine * positionFactor + (new Vector2(1, 1) - positionFactor) * lightPosInView2D;
objectScreenPos += new Vector2((float)(randomizePosition.X * (rand.NextDouble() - 0.5)),
(float)(randomizePosition.Y * (rand.NextDouble() - 0.5)));
var sizeWithRandom = size * (float)(1.0 + randomizeSize * (rand.NextDouble() - 0.5)) / 0.2f;
var colorWithLight = new Vector4((color.X + randomizeColor.X * (float)(rand.NextDouble() - 0.5) * 4) * MathUtils.Lerp(1f, pointLight.Color.X, mixPointLightColor),
(color.Y + randomizeColor.Y * (float)(rand.NextDouble() - 0.5) * 4) * MathUtils.Lerp(1f, pointLight.Color.Y, mixPointLightColor),
(color.Z + randomizeColor.Z * (float)(rand.NextDouble() - 0.5) * 4) * MathUtils.Lerp(1f, pointLight.Color.Z, mixPointLightColor),
color.W * (1 - randomizeColor.W * (float)(rand.NextDouble() * 2)));
var spriteColor = Vector4.Clamp(colorWithLight, Vector4.Zero, new Vector4(100, 100, 100, 1));
var triggerPosition = fxZoneMode == ZoneFxModes.Lights
? lightPosInView2D
: objectScreenPos;
var d = GetDistanceToEdge(triggerPosition);
var cInnerZone = MathUtils.SmootherStep(innerFxZone.Y, innerFxZone.X, 1 - d);
var cEdgeZone = MathUtils.SmootherStep(edgeFxZone.X, edgeFxZone.Y, 1 - d);
var cMatteBox = MathUtils.SmootherStep(matteBoxZone.Y, matteBoxZone.X, 1 - d);
var totalTriggerAmount = (cInnerZone + cEdgeZone) * cMatteBox;
sizeWithRandom *= (1 + zoneFxScale * totalTriggerAmount).Clamp(0, 100);
var brightnessEffect = (zoneFxBrightness * totalTriggerAmount).Clamp(0, 100);
spriteColor.X += brightnessEffect;
spriteColor.Y += brightnessEffect;
spriteColor.Z += brightnessEffect;
spriteColor.W = ((spriteColor.W + brightnessEffect)).Clamp(0, 1);
spriteColor.W *= cMatteBox * pointLight.Color.W;
// This might actually be a good idea. Maybe we should do this later..
// Fade with incoming alpha from FlatShaders and Materials
//color.W *= materialAlpha;
float spriteRotation = rotation;
switch (rotateTowards)
{
case Categories.Object:
break;
case Categories.Light:
spriteRotation -=
(float)(Math.Atan2((objectScreenPos.X - lightPosInView2D.X) * aspectRatio, objectScreenPos.Y - lightPosInView2D.Y) +
MathF.PI) * (180 / MathF.PI);
break;
case Categories.ScreenCenter:
spriteRotation -= (float)(Math.Atan2(objectScreenPos.X, objectScreenPos.Y) + MathF.PI) * 180f / MathF.PI;
break;
default:
throw new ArgumentOutOfRangeException();
}
// // Transforom UV to pick correct texture cell
// if (TextureCellsRows == 0)
// TextureCellsRows = 1;
//
// if (TextureCellsColumns == 0)
// TextureCellsColumns = 1;
// int row = (int)(Math.Floor(i / TextureCellsColumns) % TextureCellsRows);
// int column = (int)(i % TextureCellsRows);
//
// var translationUV = new Vector3(1 / TextureCellsColumns * column, 1 / TextureCellsRows * row, 0);
// var rotationUV = new Quaternion();
// var scaleUV = new Vector3(1 / TextureCellsColumns, 1 / TextureCellsRows, 0);
// var pivotUV = new Vector3(0, 0, 0);
//
// var transformUV = Matrix.Transformation(pivotUV, new Quaternion(), scaleUV, pivotUV, rotationUV, translationUV);
// var prevTransformUV = context.TextureMatrix;
// context.TextureMatrix = transformUV * prevTransformUV;
spriteColor.W *= brightness;
_tempList.Add(new Sprite
{
PosInClipSpace = objectScreenPos,
Size = sizeWithRandom * stretch * hideFactor,
Color = spriteColor,
RotationDeg = spriteRotation + f * rotationSpread * 180,
UvMin = Vector2.Zero,
UvMax = Vector2.One,
});
}
}
}
// Copy to structured array
if (_tempList.Count != _sprites.NumElements)
{
_sprites = new StructuredList <Sprite>(_tempList.Count);
}
for (var spriteIndex = 0; spriteIndex < _tempList.Count; spriteIndex++)
{
_sprites.TypedElements[spriteIndex] = _tempList[spriteIndex];
}
OutBuffer.Value = _sprites;
}
