http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/GL/gle.h

/* * gle.h * * FUNCTION: * Tubing and Extrusion header file. * This file provides protypes and defines for the extrusion * and tubing primitives. * * HISTORY: * Copyright (c) Linas Vepstas 1990, 1991 */ #ifndef __GLE_H__ #define __GLE_H__ #if defined(__cplusplus) || defined(c_plusplus) extern "C" { #endif /* some types */ #define __GLE_DOUBLE 1 #if __GLE_DOUBLE typedef double gleDouble; #else typedef float gleDouble; #endif typedef gleDouble gleAffine[2][3]; /* ====================================================== */ /* defines for tubing join styles */ #define TUBE_JN_RAW 0x1 #define TUBE_JN_ANGLE 0x2 #define TUBE_JN_CUT 0x3 #define TUBE_JN_ROUND 0x4 #define TUBE_JN_MASK 0xf /* mask bits */ #define TUBE_JN_CAP 0x10 /* determine how normal vectors are to be handled */ #define TUBE_NORM_FACET 0x100 #define TUBE_NORM_EDGE 0x200 #define TUBE_NORM_PATH_EDGE 0x400 /* for spiral, lathe, helix primitives */ #define TUBE_NORM_MASK 0xf00 /* mask bits */ /* closed or open countours */ #define TUBE_CONTOUR_CLOSED 0x1000 #define GLE_TEXTURE_ENABLE 0x10000 #define GLE_TEXTURE_STYLE_MASK 0xff #define GLE_TEXTURE_VERTEX_FLAT 1 #define GLE_TEXTURE_NORMAL_FLAT 2 #define GLE_TEXTURE_VERTEX_CYL 3 #define GLE_TEXTURE_NORMAL_CYL 4 #define GLE_TEXTURE_VERTEX_SPH 5 #define GLE_TEXTURE_NORMAL_SPH 6 #define GLE_TEXTURE_VERTEX_MODEL_FLAT 7 #define GLE_TEXTURE_NORMAL_MODEL_FLAT 8 #define GLE_TEXTURE_VERTEX_MODEL_CYL 9 #define GLE_TEXTURE_NORMAL_MODEL_CYL 10 #define GLE_TEXTURE_VERTEX_MODEL_SPH 11 #define GLE_TEXTURE_NORMAL_MODEL_SPH 12 #ifdef GL_32 /* HACK for GL 3.2 -- needed because no way to tell if lighting is on. */ #define TUBE_LIGHTING_ON 0x80000000 #define gleExtrusion extrusion #define gleSetJoinStyle setjoinstyle #define gleGetJoinStyle getjoinstyle #define glePolyCone polycone #define glePolyCylinder polycylinder #define gleSuperExtrusion super_extrusion #define gleTwistExtrusion twist_extrusion #define gleSpiral spiral #define gleLathe lathe #define gleHelicoid helicoid #define gleToroid toroid #define gleScrew screw #endif /* GL_32 */ #ifdef _NO_PROTO /* NO ANSI C PROTOTYPING */ extern int gleGetJoinStyle (); extern void gleSetJoinStyle (); extern void glePolyCone (); extern void glePolyCylinder (); extern void gleExtrusion (); extern void gleSuperExtrusion (); extern void gleTwistExtrusion (); extern void gleSpiral (); extern void gleLathe (); extern void gleHelicoid (); extern void gleToroid (); extern void gleScrew (); /* Rotation Utilities */ extern void rot_axis (); extern void rot_about_axis (); extern void rot_omega (); extern void urot_axis (); extern void urot_about_axis (); extern void urot_omega (); /* viewpoint functions */ extern void uview_direction (); extern void uviewpoint (); #else /* _NO_PROTO */ /* ANSI C PROTOTYPING */ /* control join style of the tubes */ extern int gleGetJoinStyle (void); extern void gleSetJoinStyle (int style); /* bitwise OR of flags */ /* control number of sides used to draw cylinders, cones */ extern int gleGetNumSides(void); extern void gleSetNumSides(int slices); /* draw polyclinder, specified as a polyline */ extern void glePolyCylinder (int npoints, /* num points in polyline */ gleDouble point_array[][3], /* polyline vertces */ float color_array[][3], /* colors at polyline verts */ gleDouble radius); /* radius of polycylinder */ /* draw polycone, specified as a polyline with radii */ extern void glePolyCone (int npoints, /* numpoints in poly-line */ gleDouble point_array[][3], /* polyline vertices */ float color_array[][3], /* colors at polyline verts */ gleDouble radius_array[]); /* cone radii at polyline verts */ /* extrude arbitrary 2D contour along arbitrary 3D path */ extern void gleExtrusion (int ncp, /* number of contour points */ gleDouble contour[][2], /* 2D contour */ gleDouble cont_normal[][2], /* 2D contour normals */ gleDouble up[3], /* up vector for contour */ int npoints, /* numpoints in poly-line */ gleDouble point_array[][3], /* polyline vertices */ float color_array[][3]); /* colors at polyline verts */ /* extrude 2D contour, specifying local rotations (twists) */ extern void gleTwistExtrusion (int ncp, /* number of contour points */ gleDouble contour[][2], /* 2D contour */ gleDouble cont_normal[][2], /* 2D contour normals */ gleDouble up[3], /* up vector for contour */ int npoints, /* numpoints in poly-line */ gleDouble point_array[][3], /* polyline vertices */ float color_array[][3], /* color at polyline verts */ gleDouble twist_array[]); /* countour twists (in degrees) */ /* extrude 2D contour, specifying local affine tranformations */ extern void gleSuperExtrusion (int ncp, /* number of contour points */ gleDouble contour[][2], /* 2D contour */ gleDouble cont_normal[][2], /* 2D contour normals */ gleDouble up[3], /* up vector for contour */ int npoints, /* numpoints in poly-line */ gleDouble point_array[][3], /* polyline vertices */ float color_array[][3], /* color at polyline verts */ gleDouble xform_array[][2][3]); /* 2D contour xforms */ /* spiral moves contour along helical path by parallel transport */ extern void gleSpiral (int ncp, /* number of contour points */ gleDouble contour[][2], /* 2D contour */ gleDouble cont_normal[][2], /* 2D contour normals */ gleDouble up[3], /* up vector for contour */ gleDouble startRadius, /* spiral starts in x-y plane */ gleDouble drdTheta, /* change in radius per revolution */ gleDouble startZ, /* starting z value */ gleDouble dzdTheta, /* change in Z per revolution */ gleDouble startXform[2][3], /* starting contour affine xform */ gleDouble dXformdTheta[2][3], /* tangent change xform per revoln */ gleDouble startTheta, /* start angle in x-y plane */ gleDouble sweepTheta); /* degrees to spiral around */ /* lathe moves contour along helical path by helically shearing 3D space */ extern void gleLathe (int ncp, /* number of contour points */ gleDouble contour[][2], /* 2D contour */ gleDouble cont_normal[][2], /* 2D contour normals */ gleDouble up[3], /* up vector for contour */ gleDouble startRadius, /* spiral starts in x-y plane */ gleDouble drdTheta, /* change in radius per revolution */ gleDouble startZ, /* starting z value */ gleDouble dzdTheta, /* change in Z per revolution */ gleDouble startXform[2][3], /* starting contour affine xform */ gleDouble dXformdTheta[2][3], /* tangent change xform per revoln */ gleDouble startTheta, /* start angle in x-y plane */ gleDouble sweepTheta); /* degrees to spiral around */ /* similar to spiral, except contour is a circle */ extern void gleHelicoid (gleDouble rToroid, /* circle contour (torus) radius */ gleDouble startRadius, /* spiral starts in x-y plane */ gleDouble drdTheta, /* change in radius per revolution */ gleDouble startZ, /* starting z value */ gleDouble dzdTheta, /* change in Z per revolution */ gleDouble startXform[2][3], /* starting contour affine xform */ gleDouble dXformdTheta[2][3], /* tangent change xform per revoln */ gleDouble startTheta, /* start angle in x-y plane */ gleDouble sweepTheta); /* degrees to spiral around */ /* similar to lathe, except contour is a circle */ extern void gleToroid (gleDouble rToroid, /* circle contour (torus) radius */ gleDouble startRadius, /* spiral starts in x-y plane */ gleDouble drdTheta, /* change in radius per revolution */ gleDouble startZ, /* starting z value */ gleDouble dzdTheta, /* change in Z per revolution */ gleDouble startXform[2][3], /* starting contour affine xform */ gleDouble dXformdTheta[2][3], /* tangent change xform per revoln */ gleDouble startTheta, /* start angle in x-y plane */ gleDouble sweepTheta); /* degrees to spiral around */ /* draws a screw shape */ extern void gleScrew (int ncp, /* number of contour points */ gleDouble contour[][2], /* 2D contour */ gleDouble cont_normal[][2], /* 2D contour normals */ gleDouble up[3], /* up vector for contour */ gleDouble startz, /* start of segment */ gleDouble endz, /* end of segment */ gleDouble twist); /* number of rotations */ extern void gleTextureMode (int mode); /* Rotation Utilities */ extern void rot_axis (gleDouble omega, gleDouble axis[3]); extern void rot_about_axis (gleDouble angle, gleDouble axis[3]); extern void rot_omega (gleDouble axis[3]); extern void rot_prince (gleDouble omega, char axis); extern void urot_axis (gleDouble m[4][4], gleDouble omega, gleDouble axis[3]); extern void urot_about_axis (gleDouble m[4][4], gleDouble angle, gleDouble axis[3]); extern void urot_omega (gleDouble m[4][4], gleDouble axis[3]); extern void urot_prince (gleDouble m[4][4], gleDouble omega, char axis); /* viewpoint functions */ extern void uview_direction (gleDouble m[4][4], /* returned */ gleDouble v21[3], /* input */ gleDouble up[3]); /* input */ extern void uviewpoint (gleDouble m[4][4], /* returned */ gleDouble v1[3], /* input */ gleDouble v2[3], /* input */ gleDouble up[3]); /* input */ #endif /* _NO_PROTO */ #if defined(__cplusplus) || defined(c_plusplus) }; #endif #endif /* __GLE_H__ */ /* ================== END OF FILE ======================= */