void InitPreviewUtility()
{
if (m_PreviewUtility == null)
{
m_PreviewUtility = new PreviewRenderUtility();
m_PreviewUtility.camera.fieldOfView = 30.0f;
m_Preview3DMode = Preview3DMode.Volume;
m_Texture = target as Texture3D;
m_PreviewDir = new Vector2(0, 0);
m_Channels = Mathf.Clamp(GraphicsFormatUtility.GetColorComponentCount(m_Texture.graphicsFormat), 1, 3);
CalculateResolutionAndScale(m_Texture);
m_ViewDistance = Mathf.Lerp(1, 3, Mathf.Clamp01(m_Scale.magnitude - 0.414f));
m_PreviewUtility.camera.farClipPlane = s_MaxViewDistance + 1;
m_PreviewUtility.camera.nearClipPlane = 0.01f;
}
}
public override void OnPreviewSettings()
{
if (!ShaderUtil.hardwareSupportsRectRenderTexture || !SystemInfo.supports3DTextures)
{
return;
}
GUI.enabled = true;
switch (m_Preview3DMode)
{
case Preview3DMode.Volume:
m_Ramp = GUILayout.Toggle(m_Ramp, Styles.ramp, EditorStyles.toolbarButton);
m_QualityModifier = PreviewSlider(Styles.quality, m_QualityModifier, 0.5f, 8, s_SliderWidth, s_FloatWidth);
m_MaxAlpha = PreviewSlider(Styles.alpha, m_MaxAlpha, 0.01f, 1, s_SliderWidth, s_FloatWidth);
break;
case Preview3DMode.Slice:
m_Ramp = GUILayout.Toggle(m_Ramp, Styles.ramp, EditorStyles.toolbarButton);
m_Slice.x = Mathf.Clamp(PreviewFloatField(Styles.x, m_Slice.x, s_FloatWidth), 0, m_Texture.width);
m_Slice.y = Mathf.Clamp(PreviewFloatField(Styles.y, m_Slice.y, s_FloatWidth), 0, m_Texture.height);
m_Slice.z = Mathf.Clamp(PreviewFloatField(Styles.z, m_Slice.z, s_FloatWidth), 0, m_Texture.depth);
break;
case Preview3DMode.SDF:
m_StepScale = PreviewFloatField(Styles.scale, m_StepScale, s_FloatWidth);
m_SurfaceOffset = PreviewFloatField(Styles.offset, m_SurfaceOffset, s_FloatWidth);
break;
default:
throw new ArgumentException($"Unexpected \"Preview3DMode\" value: \"{m_Preview3DMode}\"");
}
if (GUILayout.Toggle(m_Preview3DMode == Preview3DMode.Volume, Styles.volume, EditorStyles.toolbarButton))
{
m_Preview3DMode = Preview3DMode.Volume;
}
if (GUILayout.Toggle(m_Preview3DMode == Preview3DMode.Slice, Styles.slice, EditorStyles.toolbarButton))
{
m_Preview3DMode = Preview3DMode.Slice;
}
if (GUILayout.Toggle(m_Preview3DMode == Preview3DMode.SDF, Styles.sdf, EditorStyles.toolbarButton))
{
m_Preview3DMode = Preview3DMode.SDF;
}
}
void InitPreviewUtility()
{
if (m_PreviewUtility == null)
{
m_PreviewUtility = new PreviewRenderUtility();
m_PreviewUtility.camera.fieldOfView = 30.0f;
m_Preview3DMode = Preview3DMode.Volume;
m_Texture = target as Texture3D;
m_PreviewDir = new Vector2(0, 0);
float inverseResolution;
Vector3 scale = VoxelSize(GetTextureResolution(m_Texture), out inverseResolution);
m_ViewDistance = Mathf.Lerp(1, 3, Mathf.Clamp01(scale.magnitude - 0.414f));
m_PreviewUtility.camera.farClipPlane = s_MaxViewDistance * 2 + 1;
m_PreviewUtility.camera.nearClipPlane = 0.1f;
m_QualityModifier = Mathf.Clamp(8 - Mathf.Log(1.0f / inverseResolution, 2), 1, 8);
m_Slice = Vector3.Scale(Vector3.one / 2, new Vector3(m_Texture.width, m_Texture.height, m_Texture.depth));
}
}
