101 lines
2.9 KiB
C
101 lines
2.9 KiB
C
/* SPDX-FileCopyrightText: 2001-2002 NaN Holding BV. All rights reserved.
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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#pragma once
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/** \file
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* \ingroup bke
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* \brief display list (or rather multi purpose list) stuff.
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*/
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#include "BKE_customdata.h"
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#include "DNA_customdata_types.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** #DispList.type */
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enum {
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/** A closed polygon (that can be filled). */
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DL_POLY = 0,
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/** An open polygon. */
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DL_SEGM = 1,
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/** A grid surface that respects #DL_CYCL_U & #DL_CYCL_V. */
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DL_SURF = 2,
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/** Triangles. */
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DL_INDEX3 = 4,
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// DL_VERTCOL = 6, /* UNUSED */
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/** Isolated points. */
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DL_VERTS = 7,
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};
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/** #DispList.type */
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enum {
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/** U/V swapped here compared with #Nurb.flagu, #Nurb.flagv and #CU_NURB_CYCLIC */
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DL_CYCL_U = (1 << 0),
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DL_CYCL_V = (1 << 1),
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DL_FRONT_CURVE = (1 << 2),
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DL_BACK_CURVE = (1 << 3),
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};
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/* prototypes */
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struct Depsgraph;
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struct ListBase;
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struct Object;
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struct Scene;
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/* Used for curves, nurbs, meta-balls. */
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typedef struct DispList {
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struct DispList *next, *prev;
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short type, flag;
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int parts, nr;
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short col, rt; /* Currently only used for smooth flag. */
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float *verts, *nors;
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int *index;
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int charidx;
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int totindex; /* indexed array drawing surfaces */
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} DispList;
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DispList *BKE_displist_find(struct ListBase *lb, int type);
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void BKE_displist_free(struct ListBase *lb);
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void BKE_displist_make_curveTypes(struct Depsgraph *depsgraph,
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const struct Scene *scene,
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struct Object *ob,
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bool for_render);
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void BKE_curve_calc_modifiers_pre(struct Depsgraph *depsgraph,
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const struct Scene *scene,
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struct Object *ob,
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struct ListBase *source_nurb,
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struct ListBase *target_nurb,
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bool for_render);
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bool BKE_displist_surfindex_get(
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const struct DispList *dl, int a, int *b, int *p1, int *p2, int *p3, int *p4);
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/**
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* \param normal_proj: Optional normal that's used to project the scan-fill verts into 2D coords.
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* Pass this along if known since it saves time calculating the normal.
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* This is also used to initialize #DispList.nors (one normal per display list).
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* \param flip_normal: Flip the normal (same as passing \a normal_proj negated).
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*/
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void BKE_displist_fill(const struct ListBase *dispbase,
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struct ListBase *to,
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const float normal_proj[3],
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bool flip_normal);
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float BKE_displist_calc_taper(struct Depsgraph *depsgraph,
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const struct Scene *scene,
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struct Object *taperobj,
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int cur,
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int tot);
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void BKE_displist_minmax(const struct ListBase *dispbase, float min[3], float max[3]);
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#ifdef __cplusplus
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}
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#endif
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