private void UpdateTexture()
{
// create preview RT here and keep until the next Repaint
if (m_previewRT != null)
{
RenderTexture.ReleaseTemporary(m_previewRT);
}
NoiseSettings noiseSettings = m_serializedNoise.targetObject as NoiseSettings;
m_previewRT = RenderTexture.GetTemporary(512, 512, 0, RenderTextureFormat.ARGB32);
RenderTexture tempRT = RenderTexture.GetTemporary(512, 512, 0, RenderTextureFormat.RFloat);
RenderTexture prevActive = RenderTexture.active;
NoiseUtils.Blit2D(noiseSettings, tempRT);
NoiseUtils.BlitPreview2D(tempRT, m_previewRT);
RenderTexture.active = prevActive;
RenderTexture.ReleaseTemporary(tempRT);
m_image.image = m_previewRT;
}
/// <summary>
/// Renders an interactive Noise Preview along with tooltip icons and an optional Export button that opens a new ExportNoiseWindow.
/// A background image is also rendered behind the preview that takes up the entire width of the EditorWindow currently being drawn.
/// </summary>
/// <param name = "minSize"> Minimum size for the Preview </param>
/// <param name = "showExportButton"> Whether or not to render the Export button </param>
public void DrawPreviewTexture(float minSize, bool showExportButton = true)
{
// Draw label with tooltip
GUILayout.Label(Styles.noisePreview);
float padding = 4f;
float iconWidth = 40f;
int size = (int)Mathf.Min(minSize, EditorGUIUtility.currentViewWidth);
Rect totalRect = GUILayoutUtility.GetRect(EditorGUIUtility.currentViewWidth, size + padding * 2); // extra pixels for highlight border
Color prev = GUI.color;
GUI.color = new Color(.1f, .1f, .1f, 1f);
GUI.DrawTexture(totalRect, Texture2D.whiteTexture, ScaleMode.StretchToFill, false);
GUI.color = Color.white;
// draw info icon
// if(totalRect.Contains(Event.current.mousePosition))
{
Rect infoIconRect = new Rect(totalRect.x + padding, totalRect.y + padding, iconWidth, iconWidth);
GUI.Label(infoIconRect, Styles.infoIcon);
// GUI.Label( infoIconRect, Styles.noiseTooltip );
}
// draw export button
float buttonWidth = GUI.skin.button.CalcSize(Styles.export).x;
float buttonHeight = EditorGUIUtility.singleLineHeight;
Rect exportRect = new Rect(totalRect.xMax - buttonWidth - padding, totalRect.yMax - buttonHeight - padding, buttonWidth, buttonHeight);
if (GUI.Button(exportRect, Styles.export))
{
serializedNoise.ApplyModifiedProperties();
serializedNoise.Update();
ExportNoiseWindow.ShowWindow(serializedNoise.targetObject as NoiseSettings);
}
float safeSpace = Mathf.Max(iconWidth * 2, buttonWidth * 2) + padding * 4;
float minWidth = Mathf.Min(size, totalRect.width - safeSpace);
Rect previewRect = new Rect(totalRect.x + totalRect.width / 2 - minWidth / 2, totalRect.y + totalRect.height / 2 - minWidth / 2, minWidth, minWidth);
EditorGUIUtility.AddCursorRect(previewRect, MouseCursor.Pan);
if (previewRect.Contains(Event.current.mousePosition))
{
serializedNoise.Update();
HandlePreviewTextureInput(previewRect);
serializedNoise.ApplyModifiedProperties();
}
if (Event.current.type == EventType.Repaint)
{
// create preview RT here and keep until the next Repaint
if (m_previewRT != null)
{
RenderTexture.ReleaseTemporary(m_previewRT);
}
NoiseSettings noiseSettings = serializedNoise.targetObject as NoiseSettings;
m_previewRT = RenderTexture.GetTemporary(512, 512, 0, RenderTextureFormat.ARGB32);
RenderTexture tempRT = RenderTexture.GetTemporary(512, 512, 0, RenderTextureFormat.RFloat);
RenderTexture prevActive = RenderTexture.active;
NoiseUtils.Blit2D(noiseSettings, tempRT);
NoiseUtils.BlitPreview2D(tempRT, m_previewRT);
RenderTexture.active = prevActive;
GUI.DrawTexture(previewRect, m_previewRT, ScaleMode.ScaleToFit, false);
RenderTexture.ReleaseTemporary(tempRT);
}
GUI.color = prev;
}