Init

2025-12-15 22:06:49 +08:00
commit 2b56cf87a8
225 changed files with 63711 additions and 0 deletions
--- a/exchange/exchangesource/Viewer/trackball.h
+++ b/exchange/exchangesource/Viewer/trackball.h
@@ -0,0 +1,100 @@
+/***********************************************************************************************************************
+*
+* Copyright (c) 2010 - 2022 by Tech Soft 3D, Inc.
+* The information contained herein is confidential and proprietary to Tech Soft 3D, Inc., and considered a trade secret
+* as defined under civil and criminal statutes. Tech Soft 3D shall pursue its civil and criminal remedies in the event
+* of unauthorized use or misappropriation of its trade secrets. Use of this information by anyone other than authorized 
+* employees of Tech Soft 3D, Inc. is granted only under a written non-disclosure agreement, expressly prescribing the 
+* scope and manner of such use.
+*
+***********************************************************************************************************************/
+
+/* 
+  *  Simple trackball-like motion adapted (ripped off) from projtex.c
+  *  (written by David Yu and David Blythe).  See the SIGGRAPH '96
+  *  Advanced OpenGL course notes.
+  *
+  *
+  *  Usage:
+  *  
+  *  o  call gltbInit() in before any other gltb call
+  *  o  call gltbReshape() from the reshape callback
+  *  o  call gltbMatrix() to get the trackball matrix rotation
+  *  o  call gltbStartMotion() to begin trackball movememt
+  *  o  call gltbStopMotion() to stop trackball movememt
+  *  o  call gltbMotion() from the motion callback
+  *  o  call gltbAnimate(GL_TRUE) if you want the trackball to continue 
+  *     spinning after the mouse button has been released
+  *  o  call gltbAnimate(GL_FALSE) if you want the trackball to stop 
+  *     spinning after the mouse button has been released
+  *
+  *  Typical setup:
+  *
+  *
+     void
+     init(void)
+     {
+       gltbInit(GLUT_MIDDLE_BUTTON);
+       gltbAnimate(GL_TRUE);
+       . . .
+     }
+
+     void
+     reshape(int width, int height)
+     {
+       gltbReshape(width, height);
+       . . .
+     }
+
+     void
+     display(void)
+     {
+       glPushMatrix();
+
+       gltbMatrix();
+       . . . draw the scene . . .
+
+       glPopMatrix();
+     }
+
+     void
+     mouse(int button, int state, int x, int y)
+     {
+       gltbMouse(button, state, x, y);
+       . . .
+     }
+
+     void
+     motion(int x, int y)
+     {
+       gltbMotion(x, y);
+       . . .
+     }
+
+     int
+     main(int argc, char** argv)
+     {
+       . . .
+       init();
+       glutReshapeFunc(reshape);
+       glutDisplayFunc(display);
+       glutMouseFunc(mouse);
+       glutMotionFunc(motion);
+       . . .
+     }
+  ***/
+
+
+ /* functions */
+ void tbInit(GLuint button);
+
+ void tbMatrix(void);
+
+ void tbReshape(int width, int height);
+
+ void tbMouse(int button, int state, int x, int y);
+
+ void tbMotion(int x, int y);
+
+ void tbAnimate(GLboolean animate);
+