void CreateNewGradient()
{
if (currentGradient.HasValue)
{
if (!PromptSave())
{
return;
}
}
currentGradient = new ReGradientData();
currentGradient.Size = new Vector2Int(256, 64);
currentGradient.Nodes = new List <ReGradientNode>();
currentGradient.AddNode(Color.white, 0f);
currentGradient.AddNode(Color.black, 1f);
}
private void OnGUI()
{
if (gradientCompute == null)
{
LoadGradientCompute();
}
if (!currentGradient.HasValue)
{
CreateNewGradient();
}
if (previewTexture is null)
{
SetupPreviewTexture();
}
// if (selectedNode > currentGradient.Nodes.Count) selectedNode = -1;
using (new GUILayout.HorizontalScope(EditorStyles.toolbar, GUILayout.Height(50f)))
{
if (GUILayout.Button("New", EditorStyles.toolbarButton))
{
CreateNewGradient();
SetupPreviewTexture();
GeneratePreview();
selectedNode = -1;
lastPath = "";
}
if (GUILayout.Button("Load", EditorStyles.toolbarButton))
{
Load();
lastPath = "";
}
if (GUILayout.Button("Save", EditorStyles.toolbarButton))
{
Save();
}
if (GUILayout.Button("Export", EditorStyles.toolbarButton))
{
Export();
}
}
if (gradientCompute == null)
{
EditorGUILayout.LabelField("GradientCompute is not assigned");
return;
}
using (new GUILayout.VerticalScope())
{
EditorGUI.BeginChangeCheck();
currentGradient.Size = EditorGUILayout.Vector2IntField("Size", currentGradient.Size);
if (EditorGUI.EndChangeCheck())
{
SetupPreviewTexture();
GeneratePreview();
}
EditorGUILayout.Space();
float height = position.size.y * 0.4f;
float aspect = (float)currentGradient.Size.x / (float)currentGradient.Size.y;
float width = height * aspect;
Rect previewRect = GUILayoutUtility.GetRect(width - 32, height);
EditorGUI.DrawTextureTransparent(previewRect, previewTexture, ScaleMode.StretchToFill);
Rect sliderRect = GUILayoutUtility.GetRect(width, 32);
Vector2 nodeSize = Vector2.one * 32;
bool nodeActionUsed = false;
for (int i = currentGradient.Nodes.Count - 1; i >= 0; i--)
{
var node = currentGradient.Nodes[i];
float xpos = node.Percent * sliderRect.width;
Vector2 pos = new Vector2(xpos - 16, sliderRect.y);
Rect nodeRect = new Rect(pos, nodeSize);
if (selectedNode == i)
{
var selectedRect = new Rect(nodeRect);
selectedRect.width *= 0.5f;
selectedRect.x += 8;
selectedRect.height *= 1.5f;
EditorGUI.DrawRect(selectedRect, Color.yellow);
}
EditorGUI.DrawRect(nodeRect, node.Color);
if (nodeRect.Contains(Event.current.mousePosition) && !nodeActionUsed)
{
if (Event.current.type == EventType.MouseDown)
{
if (Event.current.button == 0)
{
selectedNode = i;
draggingNode = i;
Repaint();
}
else if (Event.current.button == 1)
{
selectedNode = -1;
currentGradient.Nodes.RemoveAt(i);
currentGradient.Nodes = currentGradient.Nodes.OrderBy(e => e.Percent).ToList();
GeneratePreview();
Repaint();
}
nodeActionUsed = true;
}
}
if (Event.current.type == EventType.MouseDrag && draggingNode == i)
{
nodeActionUsed = true;
float mouseX = Event.current.mousePosition.x;
mouseX -= sliderRect.position.x;
float percent = Mathf.Clamp01(mouseX / sliderRect.width);
node.Percent = percent;
currentGradient.Nodes[i] = node;
int nodeID = node.ID;
currentGradient.Nodes = currentGradient.Nodes.OrderBy(e => e.Percent).ToList();
selectedNode = currentGradient.Nodes.FindIndex(e => e.ID == nodeID);
draggingNode = currentGradient.Nodes.FindIndex(e => e.ID == nodeID);
GeneratePreview();
Repaint();
}
}
if (Event.current.type == EventType.MouseUp)
{
draggingNode = -1;
}
if (!nodeActionUsed && sliderRect.Contains(Event.current.mousePosition) && Event.current.button == 0 && Event.current.type == EventType.MouseDown)
{
float mouseX = Event.current.mousePosition.x;
mouseX -= sliderRect.position.x;
float percent = Mathf.Clamp01(mouseX / sliderRect.width);
currentGradient.AddNode(Color.white, percent);
currentGradient.Nodes = currentGradient.Nodes.OrderBy(e => e.Percent).ToList();
GeneratePreview();
Repaint();
}
EditorGUILayout.Space(25f);
if (selectedNode != -1 && selectedNode < currentGradient.Nodes.Count && !nodeActionUsed)
{
var currentNode = currentGradient.Nodes[selectedNode];
EditorGUI.BeginChangeCheck();
using (new GUILayout.HorizontalScope())
{
currentNode.Color = EditorGUILayout.ColorField(currentNode.Color);
currentNode.Percent = EditorGUILayout.Slider(currentNode.Percent, 0, 1);
}
if (EditorGUI.EndChangeCheck())
{
currentGradient.Nodes[selectedNode] = currentNode;
currentGradient.Nodes = currentGradient.Nodes.OrderBy(e => e.Percent).ToList();
GeneratePreview();
}
}
}
}
