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cs440-acg/ext/openexr/IlmBase/Imath/ImathGL.h

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+///////////////////////////////////////////////////////////////////////////
+//
+// Copyright (c) 2002, Industrial Light & Magic, a division of Lucas
+// Digital Ltd. LLC
+// 
+// All rights reserved.
+// 
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+// *       Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// *       Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// *       Neither the name of Industrial Light & Magic nor the names of
+// its contributors may be used to endorse or promote products derived
+// from this software without specific prior written permission. 
+// 
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+///////////////////////////////////////////////////////////////////////////
+
+
+#ifndef INCLUDED_IMATHGL_H
+#define INCLUDED_IMATHGL_H
+
+#include <GL/gl.h>
+
+#include "ImathVec.h"
+#include "ImathMatrix.h"
+#include "IexMathExc.h"
+#include "ImathFun.h"
+#include "ImathNamespace.h"
+
+inline void glVertex    ( const IMATH_INTERNAL_NAMESPACE::V3f &v ) { glVertex3f(v.x,v.y,v.z);   }
+inline void glVertex    ( const IMATH_INTERNAL_NAMESPACE::V2f &v ) { glVertex2f(v.x,v.y);       }
+inline void glNormal    ( const IMATH_INTERNAL_NAMESPACE::V3f &n ) { glNormal3f(n.x,n.y,n.z);   }
+inline void glColor     ( const IMATH_INTERNAL_NAMESPACE::V3f &c ) { glColor3f(c.x,c.y,c.z);    }
+inline void glTranslate ( const IMATH_INTERNAL_NAMESPACE::V3f &t ) { glTranslatef(t.x,t.y,t.z); }
+
+inline void glTexCoord( const IMATH_INTERNAL_NAMESPACE::V2f &t )
+{
+    glTexCoord2f(t.x,t.y);
+}
+
+inline void glDisableTexture()
+{
+    glActiveTexture(GL_TEXTURE1);
+    glBindTexture(GL_TEXTURE_2D, 0);
+    glDisable(GL_TEXTURE_2D);
+
+    glActiveTexture(GL_TEXTURE0);
+}
+
+namespace {
+    
+const float GL_FLOAT_MAX = 1.8e+19; // sqrt (FLT_MAX)
+
+inline bool
+badFloat (float f)
+{
+    return !IMATH_INTERNAL_NAMESPACE::finitef (f) || f < - GL_FLOAT_MAX || f > GL_FLOAT_MAX;
+}
+
+} // namespace
+	
+inline void
+throwBadMatrix (const IMATH_INTERNAL_NAMESPACE::M44f& m)
+{
+    if (badFloat (m[0][0]) ||
+	badFloat (m[0][1]) ||
+	badFloat (m[0][2]) ||
+	badFloat (m[0][3]) || 
+	badFloat (m[1][0]) ||
+	badFloat (m[1][1]) ||
+	badFloat (m[1][2]) ||
+	badFloat (m[1][3]) || 
+	badFloat (m[2][0]) ||
+	badFloat (m[2][1]) ||
+	badFloat (m[2][2]) ||
+	badFloat (m[2][3]) || 
+	badFloat (m[3][0]) ||
+	badFloat (m[3][1]) ||
+	badFloat (m[3][2]) ||
+	badFloat (m[3][3]))
+	throw IEX_NAMESPACE::OverflowExc ("GL matrix overflow");
+}
+
+inline void 
+glMultMatrix( const IMATH_INTERNAL_NAMESPACE::M44f& m ) 
+{ 
+    throwBadMatrix (m);
+    glMultMatrixf( (GLfloat*)m[0] ); 
+}
+
+inline void 
+glMultMatrix( const IMATH_INTERNAL_NAMESPACE::M44f* m ) 
+{ 
+    throwBadMatrix (*m);
+    glMultMatrixf( (GLfloat*)(*m)[0] ); 
+}
+
+inline void 
+glLoadMatrix( const IMATH_INTERNAL_NAMESPACE::M44f& m ) 
+{ 
+    throwBadMatrix (m);
+    glLoadMatrixf( (GLfloat*)m[0] ); 
+}
+
+inline void 
+glLoadMatrix( const IMATH_INTERNAL_NAMESPACE::M44f* m ) 
+{ 
+    throwBadMatrix (*m);
+    glLoadMatrixf( (GLfloat*)(*m)[0] ); 
+}
+
+
+
+
+IMATH_INTERNAL_NAMESPACE_HEADER_ENTER
+
+
+//
+// Class objects that push/pop the GL state. These objects assist with
+// proper cleanup of the state when exceptions are thrown.
+//
+
+class GLPushMatrix {
+  public:
+
+    GLPushMatrix ()			{ glPushMatrix(); }
+    ~GLPushMatrix()			{ glPopMatrix(); }
+};
+
+class GLPushAttrib {
+  public:
+
+    GLPushAttrib (GLbitfield mask)	{ glPushAttrib (mask); }
+    ~GLPushAttrib()			{ glPopAttrib(); }
+};
+
+class GLBegin {
+  public:
+
+    GLBegin (GLenum mode)		{ glBegin (mode); }
+    ~GLBegin()				{ glEnd(); }
+};
+
+
+
+IMATH_INTERNAL_NAMESPACE_HEADER_EXIT
+
+
+#endif