-
-
Notifications
You must be signed in to change notification settings - Fork 130
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
8 changed files
with
238 additions
and
31 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
124 changes: 124 additions & 0 deletions
124
Assets/Scripts/Segmentation/SegmentationTransferFunction.cs
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,124 @@ | ||
| using UnityEngine; | ||
| using System.Collections.Generic; | ||
| using System; | ||
| using System.Runtime.InteropServices.WindowsRuntime; | ||
|
|
||
| namespace UnityVolumeRendering | ||
| { | ||
| [Serializable] | ||
| public class SegmentationTransferFunction : TransferFunction | ||
| { | ||
| private Texture2D texture = null; | ||
| private Color[] textureColours; | ||
| List<SegmentationLabel> segmentationLabels = new List<SegmentationLabel>(); | ||
|
|
||
| private const int TEXTURE_WIDTH = 1024; | ||
|
|
||
| public void SetSegmentationLabels(List<SegmentationLabel> labels) | ||
| { | ||
| this.segmentationLabels = labels; | ||
| GenerateTexture(); | ||
| } | ||
|
|
||
| public override void AddControlPoint(TFColourControlPoint ctrlPoint) | ||
| { | ||
| } | ||
|
|
||
| public override void AddControlPoint(TFAlphaControlPoint ctrlPoint) | ||
| { | ||
| } | ||
|
|
||
| public override Texture2D GetTexture() | ||
| { | ||
| if (texture == null) | ||
| GenerateTexture(); | ||
|
|
||
| return texture; | ||
| } | ||
|
|
||
| public override void GenerateTexture() | ||
| { | ||
|
|
||
| textureColours = new Color[TEXTURE_WIDTH * segmentationLabels.Count]; | ||
|
|
||
| for (int iSegmentation = 0; iSegmentation < segmentationLabels.Count; iSegmentation++) | ||
| { | ||
| SegmentationLabel segmentationLabel = segmentationLabels[iSegmentation]; | ||
|
|
||
| if (segmentationLabel.transferFunction == null) | ||
| { | ||
| for (int i = 0; i < TEXTURE_WIDTH; i++) | ||
| { | ||
| textureColours[i + iSegmentation * TEXTURE_WIDTH] = segmentationLabel.colour; | ||
| } | ||
| } | ||
| else | ||
| { | ||
| TransferFunction tf = segmentationLabel.transferFunction; | ||
| List<TFColourControlPoint> cols = new List<TFColourControlPoint>(tf.colourControlPoints); | ||
| List<TFAlphaControlPoint> alphas = new List<TFAlphaControlPoint>(tf.alphaControlPoints); | ||
|
|
||
| // Sort lists of control points | ||
| cols.Sort((a, b) => (a.dataValue.CompareTo(b.dataValue))); | ||
| alphas.Sort((a, b) => (a.dataValue.CompareTo(b.dataValue))); | ||
|
|
||
| // Add colour points at beginning and end | ||
| if (cols.Count == 0 || cols[cols.Count - 1].dataValue < 1.0f) | ||
| cols.Add(new TFColourControlPoint(1.0f, Color.white)); | ||
| if (cols[0].dataValue > 0.0f) | ||
| cols.Insert(0, new TFColourControlPoint(0.0f, Color.white)); | ||
|
|
||
| // Add alpha points at beginning and end | ||
| if (alphas.Count == 0 || alphas[alphas.Count - 1].dataValue < 1.0f) | ||
| alphas.Add(new TFAlphaControlPoint(1.0f, 1.0f)); | ||
| if (alphas[0].dataValue > 0.0f) | ||
| alphas.Insert(0, new TFAlphaControlPoint(0.0f, 0.0f)); | ||
|
|
||
| int numColours = cols.Count; | ||
| int numAlphas = alphas.Count; | ||
| int iCurrColour = 0; | ||
| int iCurrAlpha = 0; | ||
|
|
||
| for (int iX = 0; iX < TEXTURE_WIDTH; iX++) | ||
| { | ||
| float t = iX / (float)(TEXTURE_WIDTH - 1); | ||
| while (iCurrColour < numColours - 2 && cols[iCurrColour + 1].dataValue < t) | ||
| iCurrColour++; | ||
| while (iCurrAlpha < numAlphas - 2 && alphas[iCurrAlpha + 1].dataValue < t) | ||
| iCurrAlpha++; | ||
|
|
||
| TFColourControlPoint leftCol = cols[iCurrColour]; | ||
| TFColourControlPoint rightCol = cols[iCurrColour + 1]; | ||
| TFAlphaControlPoint leftAlpha = alphas[iCurrAlpha]; | ||
| TFAlphaControlPoint rightAlpha = alphas[iCurrAlpha + 1]; | ||
|
|
||
| float tCol = (Mathf.Clamp(t, leftCol.dataValue, rightCol.dataValue) - leftCol.dataValue) / (rightCol.dataValue - leftCol.dataValue); | ||
| float tAlpha = (Mathf.Clamp(t, leftAlpha.dataValue, rightAlpha.dataValue) - leftAlpha.dataValue) / (rightAlpha.dataValue - leftAlpha.dataValue); | ||
|
|
||
| tCol = Mathf.SmoothStep(0.0f, 1.0f, tCol); | ||
| tAlpha = Mathf.SmoothStep(0.0f, 1.0f, tAlpha); | ||
|
|
||
| Color pixCol = rightCol.colourValue * tCol + leftCol.colourValue * (1.0f - tCol); | ||
| pixCol.a = rightAlpha.alphaValue * tAlpha + leftAlpha.alphaValue * (1.0f - tAlpha); | ||
|
|
||
| textureColours[iX + iSegmentation * TEXTURE_WIDTH] = QualitySettings.activeColorSpace == ColorSpace.Linear ? pixCol.linear : pixCol; | ||
| } | ||
| } | ||
| } | ||
| if (texture == null || texture.height != segmentationLabels.Count) | ||
| { | ||
| TextureFormat texformat = SystemInfo.SupportsTextureFormat(TextureFormat.RGBAHalf) ? TextureFormat.RGBAHalf : TextureFormat.RGBAFloat; | ||
| texture = new Texture2D(TEXTURE_WIDTH, segmentationLabels.Count, texformat, false); | ||
| texture.wrapMode = TextureWrapMode.Clamp; | ||
| texture.filterMode = FilterMode.Point; | ||
| } | ||
| texture.SetPixels(textureColours); | ||
| texture.Apply(); | ||
| } | ||
|
|
||
| public override Color GetColour(float x) | ||
| { | ||
| return Color.black; | ||
| } | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.