2008-12-08 04:36:27 +00:00
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/*
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* tube.h
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*
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* FUNCTION:
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* Tubing and Extrusion header file.
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* This file provides protypes and defines for the extrusion
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* and tubing primitives.
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*
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* HISTORY:
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* Linas Vepstas 1990, 1991
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*/
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#ifndef __TUBE_H__
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#define __TUBE_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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GLE API revision history:
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GLE_API_VERSION is updated to reflect GLE API changes (interface
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changes, semantic changes, deletions, or additions).
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GLE_API_VERSION=228 GLUT 3.7 release of GLE.
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**/
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#ifndef GLE_API_VERSION /* allow this to be overriden */
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#define GLE_API_VERSION 228
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#endif
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#ifdef _WIN32
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#define OPENGL_10
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#endif
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/* some types */
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#define gleDouble double
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typedef gleDouble gleAffine[2][3];
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/* ====================================================== */
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/* defines for tubing join styles */
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#define TUBE_JN_RAW 0x1
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#define TUBE_JN_ANGLE 0x2
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#define TUBE_JN_CUT 0x3
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#define TUBE_JN_ROUND 0x4
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#define TUBE_JN_MASK 0xf /* mask bits */
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#define TUBE_JN_CAP 0x10
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/* determine how normal vectors are to be handled */
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#define TUBE_NORM_FACET 0x100
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#define TUBE_NORM_EDGE 0x200
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#define TUBE_NORM_PATH_EDGE 0x400 /* for spiral, lathe, helix primitives */
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#define TUBE_NORM_MASK 0xf00 /* mask bits */
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/* closed or open countours */
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#define TUBE_CONTOUR_CLOSED 0x1000
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#define GLE_TEXTURE_ENABLE 0x10000
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#define GLE_TEXTURE_STYLE_MASK 0xff
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#define GLE_TEXTURE_VERTEX_FLAT 1
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#define GLE_TEXTURE_NORMAL_FLAT 2
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#define GLE_TEXTURE_VERTEX_CYL 3
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#define GLE_TEXTURE_NORMAL_CYL 4
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#define GLE_TEXTURE_VERTEX_SPH 5
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#define GLE_TEXTURE_NORMAL_SPH 6
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#define GLE_TEXTURE_VERTEX_MODEL_FLAT 7
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#define GLE_TEXTURE_NORMAL_MODEL_FLAT 8
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#define GLE_TEXTURE_VERTEX_MODEL_CYL 9
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#define GLE_TEXTURE_NORMAL_MODEL_CYL 10
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#define GLE_TEXTURE_VERTEX_MODEL_SPH 11
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#define GLE_TEXTURE_NORMAL_MODEL_SPH 12
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#ifdef GL_32
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/* HACK for GL 3.2 -- needed because no way to tell if lighting is on. */
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#define TUBE_LIGHTING_ON 0x80000000
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#define gleExtrusion extrusion
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#define gleSetJoinStyle setjoinstyle
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#define gleGetJoinStyle getjoinstyle
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#define glePolyCone polycone
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#define glePolyCylinder polycylinder
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#define gleSuperExtrusion super_extrusion
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#define gleTwistExtrusion twist_extrusion
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#define gleSpiral spiral
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#define gleLathe lathe
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#define gleHelicoid helicoid
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#define gleToroid toroid
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#define gleScrew screw
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#endif /* GL_32 */
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extern int gleGetJoinStyle (void);
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extern void gleSetJoinStyle (int style); /* bitwise OR of flags */
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extern int gleGetNumSlices(void);
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extern void gleSetNumSlices(int slices);
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/* draw polyclinder, specified as a polyline */
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extern void glePolyCylinder (int npoints, /* num points in polyline */
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gleDouble point_array[][3], /* polyline vertces */
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float color_array[][3], /* colors at polyline verts */
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gleDouble radius); /* radius of polycylinder */
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/* draw polycone, specified as a polyline with radii */
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extern void glePolyCone (int npoints, /* numpoints in poly-line */
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gleDouble point_array[][3], /* polyline vertices */
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float color_array[][3], /* colors at polyline verts */
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gleDouble radius_array[]); /* cone radii at polyline verts */
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/* extrude arbitrary 2D contour along arbitrary 3D path */
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extern void gleExtrusion (int ncp, /* number of contour points */
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gleDouble contour[][2], /* 2D contour */
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gleDouble cont_normal[][2], /* 2D contour normals */
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gleDouble up[3], /* up vector for contour */
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int npoints, /* numpoints in poly-line */
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gleDouble point_array[][3], /* polyline vertices */
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float color_array[][3]); /* colors at polyline verts */
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/* extrude 2D contour, specifying local rotations (twists) */
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extern void gleTwistExtrusion (int ncp, /* number of contour points */
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gleDouble contour[][2], /* 2D contour */
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gleDouble cont_normal[][2], /* 2D contour normals */
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gleDouble up[3], /* up vector for contour */
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int npoints, /* numpoints in poly-line */
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gleDouble point_array[][3], /* polyline vertices */
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float color_array[][3], /* color at polyline verts */
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gleDouble twist_array[]); /* countour twists (in degrees) */
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/* extrude 2D contour, specifying local affine tranformations */
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extern void gleSuperExtrusion (int ncp, /* number of contour points */
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gleDouble contour[][2], /* 2D contour */
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gleDouble cont_normal[][2], /* 2D contour normals */
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gleDouble up[3], /* up vector for contour */
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int npoints, /* numpoints in poly-line */
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gleDouble point_array[][3], /* polyline vertices */
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float color_array[][3], /* color at polyline verts */
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gleDouble xform_array[][2][3]); /* 2D contour xforms */
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/* spiral moves contour along helical path by parallel transport */
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extern void gleSpiral (int ncp, /* number of contour points */
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gleDouble contour[][2], /* 2D contour */
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gleDouble cont_normal[][2], /* 2D contour normals */
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gleDouble up[3], /* up vector for contour */
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gleDouble startRadius, /* spiral starts in x-y plane */
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gleDouble drdTheta, /* change in radius per revolution */
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gleDouble startZ, /* starting z value */
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gleDouble dzdTheta, /* change in Z per revolution */
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gleDouble startXform[2][3], /* starting contour affine xform */
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gleDouble dXformdTheta[2][3], /* tangent change xform per revoln */
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gleDouble startTheta, /* start angle in x-y plane */
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gleDouble sweepTheta); /* degrees to spiral around */
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/* lathe moves contour along helical path by helically shearing 3D space */
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extern void gleLathe (int ncp, /* number of contour points */
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gleDouble contour[][2], /* 2D contour */
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gleDouble cont_normal[][2], /* 2D contour normals */
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gleDouble up[3], /* up vector for contour */
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gleDouble startRadius, /* spiral starts in x-y plane */
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gleDouble drdTheta, /* change in radius per revolution */
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gleDouble startZ, /* starting z value */
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gleDouble dzdTheta, /* change in Z per revolution */
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gleDouble startXform[2][3], /* starting contour affine xform */
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gleDouble dXformdTheta[2][3], /* tangent change xform per revoln */
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gleDouble startTheta, /* start angle in x-y plane */
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gleDouble sweepTheta); /* degrees to spiral around */
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/* similar to spiral, except contour is a circle */
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extern void gleHelicoid (gleDouble rToroid, /* circle contour (torus) radius */
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gleDouble startRadius, /* spiral starts in x-y plane */
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gleDouble drdTheta, /* change in radius per revolution */
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gleDouble startZ, /* starting z value */
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gleDouble dzdTheta, /* change in Z per revolution */
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gleDouble startXform[2][3], /* starting contour affine xform */
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gleDouble dXformdTheta[2][3], /* tangent change xform per revoln */
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gleDouble startTheta, /* start angle in x-y plane */
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gleDouble sweepTheta); /* degrees to spiral around */
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/* similar to lathe, except contour is a circle */
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extern void gleToroid (gleDouble rToroid, /* circle contour (torus) radius */
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gleDouble startRadius, /* spiral starts in x-y plane */
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gleDouble drdTheta, /* change in radius per revolution */
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gleDouble startZ, /* starting z value */
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gleDouble dzdTheta, /* change in Z per revolution */
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gleDouble startXform[2][3], /* starting contour affine xform */
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gleDouble dXformdTheta[2][3], /* tangent change xform per revoln */
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gleDouble startTheta, /* start angle in x-y plane */
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gleDouble sweepTheta); /* degrees to spiral around */
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/* draws a screw shape */
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extern void gleScrew (int ncp, /* number of contour points */
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gleDouble contour[][2], /* 2D contour */
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gleDouble cont_normal[][2], /* 2D contour normals */
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gleDouble up[3], /* up vector for contour */
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gleDouble startz, /* start of segment */
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gleDouble endz, /* end of segment */
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gleDouble twist); /* number of rotations */
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extern void gleTextureMode (int mode);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __TUBE_H__ */
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/* ================== END OF FILE ======================= */
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