private void OnGUI()
{
VolumeRenderedObject volRend = FindObjectOfType <VolumeRenderedObject>();
if (volRend == null)
{
return;
}
tf = volRend.transferFunction;
Color oldColour = GUI.color;
float bgWidth = Mathf.Min(this.position.width - 20.0f, (this.position.height - 50.0f) * 2.0f);
Rect bgRect = new Rect(0.0f, 0.0f, bgWidth, bgWidth * 0.5f);
tf.GenerateTexture();
histogramMaterial.SetTexture("_TFTex", tf.GetTexture());
histogramMaterial.SetTexture("_HistTex", tf.histogramTexture);
Graphics.DrawTexture(bgRect, tf.GetTexture(), histogramMaterial);
Texture2D tfTexture = tf.GetTexture();
colorBarMaterial.SetTexture("_TFTex", tf.GetTexture());
Graphics.DrawTexture(new Rect(bgRect.x, bgRect.y + bgRect.height + 20, bgRect.width, 20.0f), tfTexture, colorBarMaterial);
// Colour control points
for (int iCol = 0; iCol < tf.colourControlPoints.Count; iCol++)
{
ControlPointColor colPoint = tf.colourControlPoints[iCol];
Rect ctrlBox = new Rect(bgRect.x + bgRect.width * colPoint.dataValue, bgRect.y + bgRect.height + 20, 10, 20);
GUI.color = Color.red;
GUI.skin.box.fontSize = 8;
GUI.Box(ctrlBox, "|");
if (Event.current.type == EventType.MouseDown && Event.current.button == 0 && ctrlBox.Contains(new Vector2(Event.current.mousePosition.x, Event.current.mousePosition.y)))
{
movingColPointIndex = iCol;
selectedColPointIndex = iCol;
}
else if (movingColPointIndex == iCol)
{
colPoint.dataValue = Mathf.Clamp((Event.current.mousePosition.x - bgRect.x) / bgRect.width, 0.0f, 1.0f);
}
tf.colourControlPoints[iCol] = colPoint;
}
// Alpha control points
for (int iAlpha = 0; iAlpha < tf.alphaControlPoints.Count; iAlpha++)
{
ControlPointAlpha alphaPoint = tf.alphaControlPoints[iAlpha];
Rect ctrlBox = new Rect(bgRect.x + bgRect.width * alphaPoint.dataValue, bgRect.y + (1.0f - alphaPoint.alphaValue) * bgRect.height, 10, 10);
GUI.color = oldColour;
GUI.skin.box.fontSize = 6;
GUI.Box(ctrlBox, "a");
if (Event.current.type == EventType.MouseDown && Event.current.button == 0 && ctrlBox.Contains(new Vector2(Event.current.mousePosition.x, Event.current.mousePosition.y)))
{
movingAlphaPointIndex = iAlpha;
}
else if (movingAlphaPointIndex == iAlpha)
{
alphaPoint.dataValue = Mathf.Clamp((Event.current.mousePosition.x - bgRect.x) / bgRect.width, 0.0f, 1.0f);
alphaPoint.alphaValue = Mathf.Clamp(1.0f - (Event.current.mousePosition.y - bgRect.y) / bgRect.height, 0.0f, 1.0f);
}
tf.alphaControlPoints[iAlpha] = alphaPoint;
}
if (Event.current.type == EventType.MouseUp)
{
movingColPointIndex = -1;
movingAlphaPointIndex = -1;
}
if (Event.current.type == EventType.MouseDown && Event.current.button == 1)
{
if (bgRect.Contains(new Vector2(Event.current.mousePosition.x, Event.current.mousePosition.y)))
{
tf.alphaControlPoints.Add(
tf.CreateControlPointAlpha(
Mathf.Clamp((Event.current.mousePosition.x - bgRect.x) / bgRect.width, 0.0f, 1.0f),
Mathf.Clamp(1.0f - (Event.current.mousePosition.y - bgRect.y) / bgRect.height, 0.0f, 1.0f)
));
}
else
{
tf.colourControlPoints.Add(tf.CreateControlPointColor(Mathf.Clamp((Event.current.mousePosition.x - bgRect.x) / bgRect.width, 0.0f, 1.0f), Random.ColorHSV()));
}
selectedColPointIndex = -1;
}
if (selectedColPointIndex != -1)
{
ControlPointColor colPoint = tf.colourControlPoints[selectedColPointIndex];
colPoint.colourValue = EditorGUI.ColorField(new Rect(bgRect.x, bgRect.y + bgRect.height + 50, 100.0f, 40.0f), colPoint.colourValue);
tf.colourControlPoints[selectedColPointIndex] = colPoint;
}
// TEST!!! TODO
volRend.GetComponent <MeshRenderer>().sharedMaterial.SetTexture("_TFTex", tfTexture);
volRend.GetComponent <MeshRenderer>().sharedMaterial.DisableKeyword("TF2D_ON");
GUI.color = oldColour;
}
private void OnGUI()
{
VolumeRenderedObject volRend = FindObjectOfType <VolumeRenderedObject>();
if (volRend == null)
{
return;
}
if (hist2DTex == null)
{
hist2DTex = HistogramTextureGenerator.Generate2DHistogramTexture(volRend.dataset);
}
TransferFunction2D tf2d = volRend.transferFunction2D;
// Calculate GUI width (minimum of window width and window height * 2)
float bgWidth = Mathf.Min(this.position.width - 20.0f, (this.position.height - 250.0f) * 2.0f);
// Draw the histogram
Rect histRect = new Rect(0.0f, 0.0f, bgWidth, bgWidth * 0.5f);
Graphics.DrawTexture(histRect, hist2DTex);
// Draw the TF texture (showing the rectangles)
tfGUIMat.SetTexture("_TFTex", tf2d.GetTexture());
Graphics.DrawTexture(histRect, tf2d.GetTexture(), tfGUIMat);
// Handle mouse click in box
for (int iBox = 0; iBox < tf2d.boxes.Count; iBox++)
{
TransferFunction2D.TF2DBox box = tf2d.boxes[iBox];
Rect boxRect = new Rect(histRect.x + box.rect.x * histRect.width, histRect.y + (1.0f - box.rect.height - box.rect.y) * histRect.height, box.rect.width * histRect.width, box.rect.height * histRect.height);
if (Event.current.type == EventType.MouseDown && Event.current.button == 0 && boxRect.Contains(new Vector2(Event.current.mousePosition.x, Event.current.mousePosition.y)))
{
selectedBoxIndex = iBox;
}
}
float startX = histRect.x;
float startY = histRect.y + histRect.height + 10;
// Show GUI for editing selected rectangle
if (selectedBoxIndex != -1)
{
EditorGUI.BeginChangeCheck();
TransferFunction2D.TF2DBox box = tf2d.boxes[selectedBoxIndex];
float oldX = box.rect.x;
float oldY = box.rect.y;
box.rect.x = EditorGUI.Slider(new Rect(startX, startY, 200.0f, 20.0f), "x", box.rect.x, 0.0f, 0.99f);
box.rect.width = EditorGUI.Slider(new Rect(startX + 220.0f, startY, 200.0f, 20.0f), "width", oldX + box.rect.width, box.rect.x + 0.01f, 1.0f) - box.rect.x;
box.rect.y = EditorGUI.Slider(new Rect(startX, startY + 50, 200.0f, 20.0f), "y", box.rect.y, 0.0f, 1.0f);
box.rect.height = EditorGUI.Slider(new Rect(startX + 220.0f, startY + 50, 200.0f, 20.0f), "height", oldY + box.rect.height, box.rect.y + 0.01f, 1.0f) - box.rect.y;
box.colour = EditorGUI.ColorField(new Rect(startX + 450.0f, startY + 10, 100.0f, 20.0f), box.colour);
box.minAlpha = EditorGUI.Slider(new Rect(startX + 450.0f, startY + 30, 200.0f, 20.0f), "min alpha", box.minAlpha, 0.0f, 1.0f);
box.alpha = EditorGUI.Slider(new Rect(startX + 450.0f, startY + 60, 200.0f, 20.0f), "max alpha", box.alpha, 0.0f, 1.0f);
tf2d.boxes[selectedBoxIndex] = box;
needsRegenTexture |= EditorGUI.EndChangeCheck();
}
else
{
EditorGUI.LabelField(new Rect(startX, startY, this.position.width - startX, 50.0f), "Select a rectangle in the above view, or add a new one.");
}
// Add new rectangle
if (GUI.Button(new Rect(startX, startY + 100, 150.0f, 40.0f), "Add rectangle"))
{
tf2d.AddBox(0.1f, 0.1f, 0.8f, 0.8f, Color.white, 0.5f);
needsRegenTexture = true;
}
// Remove selected shape
if (selectedBoxIndex != -1)
{
if (GUI.Button(new Rect(startX, startY + 150, 150.0f, 40.0f), "Remove selected shape"))
{
tf2d.boxes.RemoveAt(selectedBoxIndex);
needsRegenTexture = true;
}
}
// TODO: regenerate on add/remove/modify (and do it async)
if (needsRegenTexture)
{
tf2d.GenerateTexture();
needsRegenTexture = false;
}
volRend.GetComponent <MeshRenderer>().sharedMaterial.SetTexture("_TFTex", tf2d.GetTexture());
volRend.GetComponent <MeshRenderer>().sharedMaterial.EnableKeyword("TF2D_ON");
return;
}