Sync changes from upstream repository

First publish of public opennurbs from 8.x source

opennurbs_linear_workflow.h

@@ -0,0 +1,81 @@
+/*
+//
+// Copyright (c) 1993-2022 Robert McNeel & Associates. All rights reserved.
+// OpenNURBS, Rhinoceros, and Rhino3D are registered trademarks of Robert
+// McNeel & Associates.
+//
+// THIS SOFTWARE IS PROVIDED "AS IS" WITHOUT EXPRESS OR IMPLIED WARRANTY.
+// ALL IMPLIED WARRANTIES OF FITNESS FOR ANY PARTICULAR PURPOSE AND OF
+// MERCHANTABILITY ARE HEREBY DISCLAIMED.
+//
+// For complete openNURBS copyright information see <http://www.opennurbs.org>.
+//
+////////////////////////////////////////////////////////////////
+*/
+
+#if !defined(ON_LINEAR_WORKFLOW_INC_)
+#define ON_LINEAR_WORKFLOW_INC_
+
+class ON_CLASS ON_LinearWorkflow final
+{
+public:
+  ON_LinearWorkflow();
+  ON_LinearWorkflow(ON_XMLNode& model_node);
+  ON_LinearWorkflow(const ON_LinearWorkflow& lw);
+  ~ON_LinearWorkflow();
+
+  const ON_LinearWorkflow& operator = (const ON_LinearWorkflow& lw);
+
+  bool operator == (const ON_LinearWorkflow& lw);
+  bool operator != (const ON_LinearWorkflow& lw);
+
+  // Returns the linear workflow active state for textures.
+  bool PreProcessTextures(void) const;
+
+  // Sets the linear workflow (pre-process) active state for textures.
+  void SetPreProcessTextures(bool b);
+
+  // Returns the linear workflow active state for individual colors.
+  bool PreProcessColors(void) const;
+
+  // Sets the linear workflow (pre-process) active state for individual colors.
+  void SetPreProcessColors(bool b);
+
+  // Returns the pre-process gamma for input textures and colors.
+  float PreProcessGamma(void) const;
+
+  // Set pre-process gamma. This will generally be >= 1.0 (usually 2.2).
+  // This is the actual value applied in pre-process.
+  void SetPreProcessGamma(float gamma);
+
+  // Get post-process gamma enabled state.
+  bool PostProcessGammaOn(void) const;
+
+  // Set post-process gamma enabled state.
+  void SetPostProcessGammaOn(bool on);
+
+  // Returns the post-process gamma for frame buffer. This is not the value applied; it's the value that
+  // appears in the UI. See PostProcessGammaReciprocal().
+  float PostProcessGamma(void) const;
+
+  // Set post-process gamma. This will generally be >= 1.0 (usually 2.2).
+  // The actual value to be applied in post-process is the reciprocal.
+  void SetPostProcessGamma(float gamma);
+
+  // Returns: Gamma reciprocal for frame buffer. This is the value that is applied to each color channel
+  // for post-process and is supplied here as an optimization.
+  float PostProcessGammaReciprocal(void) const;
+
+  // Applies pre-process gamma correction to a color if linear workflow is active.
+  // for_texture is true if the color is part of a texture. */
+  void ApplyPreProcessGamma(ON_4fColor& col, bool for_texture) const;
+
+  // Returns the CRC of gamma and linear workflow active state.
+  ON__UINT32 DataCRC(ON__UINT32 current_remainder) const;
+
+public:
+  class CImpl;
+  CImpl* m_impl;
+};
+
+#endif