458 lines
13 KiB
C++
458 lines
13 KiB
C++
/*
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* Portions of this file are copyright Rebirth contributors and licensed as
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* described in COPYING.txt.
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* Portions of this file are copyright Parallax Software and licensed
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* according to the Parallax license below.
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* See COPYING.txt for license details.
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THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
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SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
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END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
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ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
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IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
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SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
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FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
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CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
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AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
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COPYRIGHT 1993-1998 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
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*/
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/*
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*
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* Functions for sizing segments
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*
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*/
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#include <stdlib.h>
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#include "editor.h"
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#include "editor/esegment.h"
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#include "dxxerror.h"
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#include "gameseg.h"
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#include "kdefs.h"
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#include "compiler-range_for.h"
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#include "d_range.h"
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#define XDIM 0
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#define YDIM 1
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#define ZDIM 2
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#define MAX_MODIFIED_VERTICES 32
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namespace {
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static std::array<vertnum_t, MAX_MODIFIED_VERTICES> Modified_vertices;
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int Modified_vertex_index = 0;
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}
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namespace dsx {
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namespace {
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// ------------------------------------------------------------------------------------------
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static void validate_modified_segments(void)
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{
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auto &LevelSharedVertexState = LevelSharedSegmentState.get_vertex_state();
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auto &Vertices = LevelSharedVertexState.get_vertices();
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visited_segment_bitarray_t modified_segments;
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auto &vcvertptr = Vertices.vcptr;
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for (int v=0; v<Modified_vertex_index; v++) {
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const auto v0 = Modified_vertices[v];
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range_for (const auto &&segp, vmsegptridx)
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{
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if (segp->segnum != segment_none)
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{
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if (modified_segments[segp])
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continue;
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range_for (const auto w, segp->verts)
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if (w == v0)
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{
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modified_segments[segp] = true;
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validate_segment(vcvertptr, segp);
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for (const auto s : MAX_SIDES_PER_SEGMENT)
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{
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Num_tilings = 1;
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assign_default_uvs_to_side(segp, s);
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}
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break;
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}
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}
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}
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}
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}
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// ------------------------------------------------------------------------------------------
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// Scale vertex *vertp by vector *vp, scaled by scale factor scale_factor
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static void scale_vert_aux(const vertnum_t vertex_ind, const vms_vector &vp, const fix scale_factor)
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{
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auto &LevelSharedVertexState = LevelSharedSegmentState.get_vertex_state();
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auto &Vertices = LevelSharedVertexState.get_vertices();
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auto &vmvertptr = Vertices.vmptr;
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auto &vertp = *vmvertptr(vertex_ind);
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vertp.x += fixmul(vp.x,scale_factor)/2;
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vertp.y += fixmul(vp.y,scale_factor)/2;
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vertp.z += fixmul(vp.z,scale_factor)/2;
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Assert(Modified_vertex_index < MAX_MODIFIED_VERTICES);
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Modified_vertices[Modified_vertex_index++] = vertex_ind;
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}
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// ------------------------------------------------------------------------------------------
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static void scale_vert(const shared_segment &sp, const vertnum_t vertex_ind, const vms_vector &vp, const fix scale_factor)
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{
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auto &verts = sp.verts;
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switch (SegSizeMode) {
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case SEGSIZEMODE_FREE:
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if (is_free_vertex(vcsegptr, vertex_ind))
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scale_vert_aux(vertex_ind, vp, scale_factor);
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break;
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case SEGSIZEMODE_ALL:
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scale_vert_aux(vertex_ind, vp, scale_factor);
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break;
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case SEGSIZEMODE_CURSIDE: {
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range_for (const auto v, Side_to_verts[Curside])
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if (verts[v] == vertex_ind)
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scale_vert_aux(vertex_ind, vp, scale_factor);
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break;
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}
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case SEGSIZEMODE_EDGE: {
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auto &sv = Side_to_verts[Curside];
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const auto edge = Curedge;
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range_for (const int v, xrange(2u))
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if (verts[sv[next_side_vertex(edge, v)]] == vertex_ind)
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scale_vert_aux(vertex_ind, vp, scale_factor);
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break;
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}
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case SEGSIZEMODE_VERTEX:
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if (verts[Side_to_verts[Curside][Curvert]] == vertex_ind)
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scale_vert_aux(vertex_ind, vp, scale_factor);
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break;
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default:
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Error("Unsupported SegSizeMode in ksegsize.c/scale_vert = %i\n", SegSizeMode);
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}
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}
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// ------------------------------------------------------------------------------------------
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static void scale_free_verts(const shared_segment &sp, const vms_vector &vp, const sidenum_t side, fix scale_factor)
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{
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range_for (auto &v, Side_to_verts[side])
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{
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const auto vertex_ind = sp.verts[v];
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if (SegSizeMode || is_free_vertex(vcsegptr, vertex_ind))
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scale_vert(sp, vertex_ind, vp, scale_factor);
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}
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}
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// -----------------------------------------------------------------------------
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// Make segment *sp bigger in dimension dimension by amount amount.
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static void med_scale_segment_new(const shared_segment &sp, const int dimension, const fix amount)
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{
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vms_matrix mat;
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Modified_vertex_index = 0;
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med_extract_matrix_from_segment(sp, mat);
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const vms_vector *vec;
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sidenum_t side0, side1;
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switch (dimension) {
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case XDIM:
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side0 = sidenum_t::WLEFT;
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side1 = sidenum_t::WRIGHT;
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vec = &mat.rvec;
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break;
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case YDIM:
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side0 = sidenum_t::WBOTTOM;
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side1 = sidenum_t::WTOP;
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vec = &mat.uvec;
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break;
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case ZDIM:
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side0 = sidenum_t::WFRONT;
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side1 = sidenum_t::WBACK;
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vec = &mat.fvec;
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break;
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default:
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return;
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}
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scale_free_verts(sp, *vec, side0, -amount);
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scale_free_verts(sp, *vec, side1, +amount);
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validate_modified_segments();
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}
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// ------------------------------------------------------------------------------------------
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// Extract a vector from a segment. The vector goes from the start face to the end face.
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// The point on each face is the average of the four points forming the face.
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static void extract_vector_from_segment_side(const shared_segment &sp, const sidenum_t side, vms_vector &vp, const side_relative_vertnum vla, const side_relative_vertnum vlb, const side_relative_vertnum vra, const side_relative_vertnum vrb)
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{
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auto &LevelSharedVertexState = LevelSharedSegmentState.get_vertex_state();
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auto &Vertices = LevelSharedVertexState.get_vertices();
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auto &sv = Side_to_verts[side];
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auto &verts = sp.verts;
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auto &vcvertptr = Vertices.vcptr;
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const auto v1 = vm_vec_sub(vcvertptr(verts[sv[vra]]), vcvertptr(verts[sv[vla]]));
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const auto v2 = vm_vec_sub(vcvertptr(verts[sv[vrb]]), vcvertptr(verts[sv[vlb]]));
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vm_vec_add(vp, v1, v2);
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vm_vec_scale(vp, F1_0/2);
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}
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}
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// ------------------------------------------------------------------------------------------
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// Extract the right vector from segment *sp, return in *vp.
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// The forward vector is defined to be the vector from the the center of the left face of the segment
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// to the center of the right face of the segment.
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void med_extract_right_vector_from_segment_side(const shared_segment &sp, const sidenum_t sidenum, vms_vector &vp)
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{
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extract_vector_from_segment_side(sp, sidenum, vp, side_relative_vertnum::_3, side_relative_vertnum::_2, side_relative_vertnum::_0, side_relative_vertnum::_1);
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}
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// ------------------------------------------------------------------------------------------
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// Extract the up vector from segment *sp, return in *vp.
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// The forward vector is defined to be the vector from the the center of the bottom face of the segment
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// to the center of the top face of the segment.
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void med_extract_up_vector_from_segment_side(const shared_segment &sp, const sidenum_t sidenum, vms_vector &vp)
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{
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extract_vector_from_segment_side(sp, sidenum, vp, side_relative_vertnum::_1, side_relative_vertnum::_2, side_relative_vertnum::_0, side_relative_vertnum::_3);
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}
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namespace {
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// -----------------------------------------------------------------------------
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// Increase the size of Cursegp in dimension dimension by amount
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static int segsize_common(int dimension, fix amount)
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{
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auto &LevelSharedVertexState = LevelSharedSegmentState.get_vertex_state();
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auto &Vertices = LevelSharedVertexState.get_vertices();
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vms_vector uvec, rvec, fvec, scalevec;
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Degenerate_segment_found = 0;
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med_scale_segment_new(Cursegp, dimension, amount);
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med_extract_up_vector_from_segment_side(Cursegp, Curside, uvec);
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med_extract_right_vector_from_segment_side(Cursegp, Curside, rvec);
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auto &vcvertptr = Vertices.vcptr;
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extract_forward_vector_from_segment(vcvertptr, Cursegp, fvec);
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scalevec.x = vm_vec_mag(rvec);
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scalevec.y = vm_vec_mag(uvec);
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scalevec.z = vm_vec_mag(fvec);
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if (Degenerate_segment_found) {
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Degenerate_segment_found = 0;
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editor_status("Applying scale would create degenerate segments. Aborting scale.");
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med_scale_segment_new(Cursegp, dimension, -amount);
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return 1;
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}
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med_create_new_segment(scalevec);
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// For all segments to which Cursegp is connected, propagate tmap (uv coordinates) from the connected
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// segment back to Cursegp. This will meaningfully propagate uv coordinates to all sides which havve
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// an incident edge. It will also do some sides more than once. And it is probably just not what you want.
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per_side_array<int> propagated{};
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for (const auto i : MAX_SIDES_PER_SEGMENT)
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{
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const auto c = Cursegp->children[i];
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if (IS_CHILD(c))
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{
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range_for (auto &s, propagated)
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++s;
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-- propagated[Side_opposite[i]];
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med_propagate_tmaps_to_segments(vmsegptridx(c), Cursegp, 1);
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}
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}
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// Now, for all sides that were not adjacent to another side, and therefore did not get tmaps
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// propagated to them, treat as a back side.
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for (const auto i : MAX_SIDES_PER_SEGMENT)
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if (!propagated[i]) {
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med_propagate_tmaps_to_back_side(Cursegp, i, 1);
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}
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// New stuff, assign default texture to all affected sides.
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Update_flags |= UF_WORLD_CHANGED;
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mine_changed = 1;
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return 1;
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}
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}
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// -----------------------------------------------------------------------------
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// ---------- segment size control ----------
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int IncreaseSegLength()
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{
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return segsize_common(ZDIM,+F1_0);
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}
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int DecreaseSegLength()
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{
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return segsize_common(ZDIM,-F1_0);
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}
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int DecreaseSegWidth()
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{
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return segsize_common(XDIM,-F1_0);
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}
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int IncreaseSegWidth()
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{
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return segsize_common(XDIM,+F1_0);
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}
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int IncreaseSegHeight()
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{
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return segsize_common(YDIM,+F1_0);
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}
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int DecreaseSegHeight()
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{
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return segsize_common(YDIM,-F1_0);
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}
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int IncreaseSegLengthBig()
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{
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return segsize_common(ZDIM,+5 * F1_0);
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}
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int DecreaseSegLengthBig()
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{
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return segsize_common(ZDIM,-5 * F1_0);
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}
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int DecreaseSegWidthBig()
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{
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return segsize_common(XDIM,-5 * F1_0);
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}
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int IncreaseSegWidthBig()
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{
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return segsize_common(XDIM,+5 * F1_0);
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}
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int IncreaseSegHeightBig()
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{
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return segsize_common(YDIM,+5 * F1_0);
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}
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int DecreaseSegHeightBig()
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{
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return segsize_common(YDIM,-5 * F1_0);
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}
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int IncreaseSegLengthDefault()
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{
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return segsize_common(ZDIM,+40 *F1_0);
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}
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int DecreaseSegLengthDefault()
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{
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return segsize_common(ZDIM,-40*F1_0);
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}
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int IncreaseSegWidthDefault()
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{
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return segsize_common(XDIM,+40*F1_0);
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}
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int DecreaseSegWidthDefault()
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{
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return segsize_common(XDIM,-40*F1_0);
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}
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int IncreaseSegHeightDefault()
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{
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return segsize_common(YDIM,+40 * F1_0);
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}
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int DecreaseSegHeightDefault()
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{
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return segsize_common(YDIM,-40 * F1_0);
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}
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// ---------------------------------------------------------------------------
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int ToggleSegSizeMode(void)
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{
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SegSizeMode++;
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if (SegSizeMode > SEGSIZEMODE_MAX)
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SegSizeMode = SEGSIZEMODE_MIN;
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return 1;
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}
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namespace {
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// ---------------------------------------------------------------------------
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static int PerturbCursideCommon(fix amount)
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{
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auto &LevelSharedVertexState = LevelSharedSegmentState.get_vertex_state();
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auto &Vertices = LevelSharedVertexState.get_vertices();
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int saveSegSizeMode = SegSizeMode;
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vms_vector fvec, rvec, uvec;
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SegSizeMode = SEGSIZEMODE_CURSIDE;
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Modified_vertex_index = 0;
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auto &vcvertptr = Vertices.vcptr;
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extract_forward_vector_from_segment(vcvertptr, Cursegp, fvec);
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extract_right_vector_from_segment(vcvertptr, Cursegp, rvec);
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extract_up_vector_from_segment(vcvertptr, Cursegp, uvec);
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const auto fmag = vm_vec_mag(fvec);
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const auto rmag = vm_vec_mag(rvec);
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const auto umag = vm_vec_mag(uvec);
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range_for (const auto v, Side_to_verts[Curside])
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{
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vms_vector perturb_vec;
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perturb_vec.x = fixmul(rmag, d_rand()*2 - 32767);
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perturb_vec.y = fixmul(umag, d_rand()*2 - 32767);
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perturb_vec.z = fixmul(fmag, d_rand()*2 - 32767);
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scale_vert(Cursegp, Cursegp->verts[v], perturb_vec, amount);
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}
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// validate_segment(Cursegp);
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// if (SegSizeMode) {
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// for (i=0; i<MAX_SIDES_PER_SEGMENT; i++)
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// if (Cursegp->children[i] != -1)
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// validate_segment(&Segments[Cursegp->children[i]]);
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// }
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validate_modified_segments();
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SegSizeMode = saveSegSizeMode;
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Update_flags |= UF_WORLD_CHANGED;
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mine_changed = 1;
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return 1;
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}
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}
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// ---------------------------------------------------------------------------
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int PerturbCurside(void)
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{
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PerturbCursideCommon(F1_0/10);
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return 1;
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}
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// ---------------------------------------------------------------------------
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int PerturbCursideBig(void)
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{
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PerturbCursideCommon(F1_0/2);
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return 1;
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}
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}
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