117 lines
4.6 KiB
C
117 lines
4.6 KiB
C
/**
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* blenlib/BKE_curve.h (mar-2001 nzc)
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*
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* $Id$
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*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
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* All rights reserved.
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*
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* The Original Code is: all of this file.
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*
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* Contributor(s): none yet.
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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#ifndef BKE_CURVE_H
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#define BKE_CURVE_H
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struct Curve;
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struct ListBase;
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struct Object;
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struct Scene;
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struct Nurb;
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struct ListBase;
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struct BezTriple;
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struct BevList;
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#define KNOTSU(nu) ( (nu)->orderu+ (nu)->pntsu+ (((nu)->flagu & CU_NURB_CYCLIC) ? ((nu)->orderu-1) : 0) )
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#define KNOTSV(nu) ( (nu)->orderv+ (nu)->pntsv+ (((nu)->flagv & CU_NURB_CYCLIC) ? ((nu)->orderv-1) : 0) )
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/* Non cyclic nurbs have 1 less segment */
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#define SEGMENTSU(nu) ( ((nu)->flagu & CU_NURB_CYCLIC) ? (nu)->pntsu : (nu)->pntsu-1 )
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#define SEGMENTSV(nu) ( ((nu)->flagv & CU_NURB_CYCLIC) ? (nu)->pntsv : (nu)->pntsv-1 )
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#define CU_DO_TILT(cu, nu) (((nu->flag & CU_2D) && (cu->flag & CU_3D)==0) ? 0 : 1)
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#define CU_DO_RADIUS(cu, nu) ((CU_DO_TILT(cu, nu) || ((cu)->flag & CU_PATH_RADIUS) || (cu)->bevobj || (cu)->ext1!=0.0 || (cu)->ext2!=0.0) ? 1:0)
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void unlink_curve( struct Curve *cu);
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void free_curve( struct Curve *cu);
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void BKE_free_editfont(struct Curve *cu);
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struct Curve *add_curve(char *name, int type);
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struct Curve *copy_curve( struct Curve *cu);
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void make_local_curve( struct Curve *cu);
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short curve_type( struct Curve *cu);
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void test_curve_type( struct Object *ob);
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void tex_space_curve( struct Curve *cu);
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int count_curveverts( struct ListBase *nurb);
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int count_curveverts_without_handles( struct ListBase *nurb);
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void freeNurb( struct Nurb *nu);
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void freeNurblist( struct ListBase *lb);
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struct Nurb *duplicateNurb( struct Nurb *nu);
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void duplicateNurblist( struct ListBase *lb1, struct ListBase *lb2);
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void test2DNurb( struct Nurb *nu);
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void minmaxNurb( struct Nurb *nu, float *min, float *max);
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void nurbs_knot_calc_u(struct Nurb *nu);
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void nurbs_knot_calc_v(struct Nurb *nu);
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void makeNurbfaces(struct Nurb *nu, float *coord_array, int rowstride);
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void makeNurbcurve(struct Nurb *nu, float *coord_array, float *tilt_array, float *radius_array, float *weight_array, int resolu, int stride);
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void forward_diff_bezier(float q0, float q1, float q2, float q3, float *p, int it, int stride);
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float *make_orco_curve(struct Scene *scene, struct Object *ob);
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float *make_orco_surf( struct Object *ob);
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void makebevelcurve(struct Scene *scene, struct Object *ob, struct ListBase *disp, int forRender);
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void makeBevelList( struct Object *ob);
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void calchandleNurb( struct BezTriple *bezt, struct BezTriple *prev, struct BezTriple *next, int mode);
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void calchandlesNurb( struct Nurb *nu);
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void testhandlesNurb( struct Nurb *nu);
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void autocalchandlesNurb( struct Nurb *nu, int flag);
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void autocalchandlesNurb_all(ListBase *editnurb, int flag);
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void sethandlesNurb(ListBase *editnurb, short code);
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void switchdirectionNurb( struct Nurb *nu);
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void addNurbPoints(struct Nurb *nu, int number);
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void addNurbPointsBezier(struct Nurb *nu, int number);
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float (*curve_getVertexCos(struct Curve *cu, struct ListBase *lb, int *numVerts_r))[3];
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void curve_applyVertexCos(struct Curve *cu, struct ListBase *lb, float (*vertexCos)[3]);
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float (*curve_getKeyVertexCos(struct Curve *cu, struct ListBase *lb, float *key))[3];
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void curve_applyKeyVertexTilts(struct Curve *cu, struct ListBase *lb, float *key);
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/* nurb checks if they can be drawn, also clamp order func */
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int check_valid_nurb_u( struct Nurb *nu);
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int check_valid_nurb_v( struct Nurb *nu);
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int clamp_nurb_order_u( struct Nurb *nu);
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int clamp_nurb_order_v( struct Nurb *nu);
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ListBase *BKE_curve_nurbs(struct Curve *cu);
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int minmax_curve(struct Curve *cu, float min[3], float max[3]);
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int curve_center_median(struct Curve *cu, float cent[3]);
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int curve_center_bounds(struct Curve *cu, float cent[3]);
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void curve_translate(struct Curve *cu, float offset[3], int do_keys);
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#endif
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