/*
* Portions of this file are copyright Rebirth contributors and licensed as
* described in COPYING.txt.
* Portions of this file are copyright Parallax Software and licensed
* according to the Parallax license below.
* See COPYING.txt for license details.
THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
COPYRIGHT 1993-1998 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
*/
/*
*
* Functions for sizing segments
*
*/
#include <stdlib.h>
#include "inferno.h"
#include "editor.h"
#include "editor/esegment.h"
#include "dxxerror.h"
#include "gameseg.h"
#include "kdefs.h"
#include "compiler-range_for.h"
#include "d_range.h"
#define XDIM 0
#define YDIM 1
#define ZDIM 2
#define MAX_MODIFIED_VERTICES 32
static std::array<int, MAX_MODIFIED_VERTICES> Modified_vertices;
int Modified_vertex_index = 0;
namespace dsx {
// ------------------------------------------------------------------------------------------
static void validate_modified_segments(void)
{
auto &LevelSharedVertexState = LevelSharedSegmentState.get_vertex_state();
auto &Vertices = LevelSharedVertexState.get_vertices();
int v0;
visited_segment_bitarray_t modified_segments;
auto &vcvertptr = Vertices.vcptr;
for (int v=0; v<Modified_vertex_index; v++) {
v0 = Modified_vertices[v];
range_for (const auto &&segp, vmsegptridx)
{
if (segp->segnum != segment_none)
{
if (modified_segments[segp])
continue;
range_for (const auto w, segp->verts)
if (w == v0)
{
modified_segments[segp] = true;
validate_segment(vcvertptr, segp);
for (unsigned s=0; s<MAX_SIDES_PER_SEGMENT; s++) {
Num_tilings = 1;
assign_default_uvs_to_side(segp, s);
}
break;
}
}
}
}
}
// ------------------------------------------------------------------------------------------
// Scale vertex *vertp by vector *vp, scaled by scale factor scale_factor
static void scale_vert_aux(const unsigned vertex_ind, const vms_vector &vp, const fix scale_factor)
{
auto &LevelSharedVertexState = LevelSharedSegmentState.get_vertex_state();
auto &Vertices = LevelSharedVertexState.get_vertices();
auto &vmvertptr = Vertices.vmptr;
auto &vertp = *vmvertptr(vertex_ind);
vertp.x += fixmul(vp.x,scale_factor)/2;
vertp.y += fixmul(vp.y,scale_factor)/2;
vertp.z += fixmul(vp.z,scale_factor)/2;
Assert(Modified_vertex_index < MAX_MODIFIED_VERTICES);
Modified_vertices[Modified_vertex_index++] = vertex_ind;
}
// ------------------------------------------------------------------------------------------
static void scale_vert(const shared_segment &sp, const unsigned vertex_ind, const vms_vector &vp, const fix scale_factor)
{
auto &verts = sp.verts;
switch (SegSizeMode) {
case SEGSIZEMODE_FREE:
if (is_free_vertex(vertex_ind))
scale_vert_aux(vertex_ind, vp, scale_factor);
break;
case SEGSIZEMODE_ALL:
scale_vert_aux(vertex_ind, vp, scale_factor);
break;
case SEGSIZEMODE_CURSIDE: {
range_for (const auto v, Side_to_verts[Curside])
if (verts[v] == vertex_ind)
scale_vert_aux(vertex_ind, vp, scale_factor);
break;
}
case SEGSIZEMODE_EDGE: {
range_for (const int v, xrange(2u))
if (verts[Side_to_verts[Curside][(Curedge+v)%4]] == vertex_ind)
scale_vert_aux(vertex_ind, vp, scale_factor);
break;
}
case SEGSIZEMODE_VERTEX:
if (verts[Side_to_verts[Curside][Curvert]] == vertex_ind)
scale_vert_aux(vertex_ind, vp, scale_factor);
break;
default:
Error("Unsupported SegSizeMode in ksegsize.c/scale_vert = %i\n", SegSizeMode);
}
}
// ------------------------------------------------------------------------------------------
static void scale_free_verts(const vmsegptr_t sp, const vms_vector &vp, int side, fix scale_factor)
{
int vertex_ind;
range_for (auto &v, Side_to_verts[side])
{
vertex_ind = sp->verts[v];
if (SegSizeMode || is_free_vertex(vertex_ind))
scale_vert(sp, vertex_ind, vp, scale_factor);
}
}
// -----------------------------------------------------------------------------
// Make segment *sp bigger in dimension dimension by amount amount.
static void med_scale_segment_new(const vmsegptr_t sp, int dimension, fix amount)
{
vms_matrix mat;
Modified_vertex_index = 0;
med_extract_matrix_from_segment(sp, mat);
const vms_vector *vec;
unsigned side0, side1;
switch (dimension) {
case XDIM:
side0 = WLEFT;
side1 = WRIGHT;
vec = &mat.rvec;
break;
case YDIM:
side0 = WBOTTOM;
side1 = WTOP;
vec = &mat.uvec;
break;
case ZDIM:
side0 = WFRONT;
side1 = WBACK;
vec = &mat.fvec;
break;
default:
return;
}
scale_free_verts(sp, *vec, side0, -amount);
scale_free_verts(sp, *vec, side1, +amount);
validate_modified_segments();
}
// ------------------------------------------------------------------------------------------
// Extract a vector from a segment. The vector goes from the start face to the end face.
// The point on each face is the average of the four points forming the face.
static void extract_vector_from_segment_side(const vmsegptr_t sp, const unsigned side, vms_vector &vp, const unsigned vla, const unsigned vlb, const unsigned vra, const unsigned vrb)
{
auto &LevelSharedVertexState = LevelSharedSegmentState.get_vertex_state();
auto &Vertices = LevelSharedVertexState.get_vertices();
auto &sv = Side_to_verts[side];
auto &verts = sp->verts;
auto &vcvertptr = Vertices.vcptr;
const auto v1 = vm_vec_sub(vcvertptr(verts[sv[vra]]), vcvertptr(verts[sv[vla]]));
const auto v2 = vm_vec_sub(vcvertptr(verts[sv[vrb]]), vcvertptr(verts[sv[vlb]]));
vm_vec_add(vp, v1, v2);
vm_vec_scale(vp, F1_0/2);
}
// ------------------------------------------------------------------------------------------
// Extract the right vector from segment *sp, return in *vp.
// The forward vector is defined to be the vector from the the center of the left face of the segment
// to the center of the right face of the segment.
void med_extract_right_vector_from_segment_side(const vmsegptr_t sp, int sidenum, vms_vector &vp)
{
extract_vector_from_segment_side(sp, sidenum, vp, 3, 2, 0, 1);
}
// ------------------------------------------------------------------------------------------
// Extract the up vector from segment *sp, return in *vp.
// The forward vector is defined to be the vector from the the center of the bottom face of the segment
// to the center of the top face of the segment.
void med_extract_up_vector_from_segment_side(const vmsegptr_t sp, int sidenum, vms_vector &vp)
{
extract_vector_from_segment_side(sp, sidenum, vp, 1, 2, 0, 3);
}
// -----------------------------------------------------------------------------
// Increase the size of Cursegp in dimension dimension by amount
static int segsize_common(int dimension, fix amount)
{
auto &LevelSharedVertexState = LevelSharedSegmentState.get_vertex_state();
auto &Vertices = LevelSharedVertexState.get_vertices();
vms_vector uvec, rvec, fvec, scalevec;
Degenerate_segment_found = 0;
med_scale_segment_new(Cursegp, dimension, amount);
med_extract_up_vector_from_segment_side(Cursegp, Curside, uvec);
med_extract_right_vector_from_segment_side(Cursegp, Curside, rvec);
auto &vcvertptr = Vertices.vcptr;
extract_forward_vector_from_segment(vcvertptr, Cursegp, fvec);
scalevec.x = vm_vec_mag(rvec);
scalevec.y = vm_vec_mag(uvec);
scalevec.z = vm_vec_mag(fvec);
if (Degenerate_segment_found) {
Degenerate_segment_found = 0;
editor_status("Applying scale would create degenerate segments. Aborting scale.");
med_scale_segment_new(Cursegp, dimension, -amount);
return 1;
}
med_create_new_segment(scalevec);
// For all segments to which Cursegp is connected, propagate tmap (uv coordinates) from the connected
// segment back to Cursegp. This will meaningfully propagate uv coordinates to all sides which havve
// an incident edge. It will also do some sides more than once. And it is probably just not what you want.
std::array<int, MAX_SIDES_PER_SEGMENT> propagated = {};
for (int i=0; i<MAX_SIDES_PER_SEGMENT; i++)
{
const auto c = Cursegp->children[i];
if (IS_CHILD(c))
{
range_for (auto &s, propagated)
++s;
propagated[static_cast<int>(Side_opposite[i])]--;
med_propagate_tmaps_to_segments(vmsegptridx(c), Cursegp, 1);
}
}
// Now, for all sides that were not adjacent to another side, and therefore did not get tmaps
// propagated to them, treat as a back side.
for (int i=0; i<MAX_SIDES_PER_SEGMENT; i++)
if (!propagated[i]) {
med_propagate_tmaps_to_back_side(Cursegp, i, 1);
}
// New stuff, assign default texture to all affected sides.
Update_flags |= UF_WORLD_CHANGED;
mine_changed = 1;
return 1;
}
// -----------------------------------------------------------------------------
// ---------- segment size control ----------
int IncreaseSegLength()
{
return segsize_common(ZDIM,+F1_0);
}
int DecreaseSegLength()
{
return segsize_common(ZDIM,-F1_0);
}
int DecreaseSegWidth()
{
return segsize_common(XDIM,-F1_0);
}
int IncreaseSegWidth()
{
return segsize_common(XDIM,+F1_0);
}
int IncreaseSegHeight()
{
return segsize_common(YDIM,+F1_0);
}
int DecreaseSegHeight()
{
return segsize_common(YDIM,-F1_0);
}
int IncreaseSegLengthBig()
{
return segsize_common(ZDIM,+5 * F1_0);
}
int DecreaseSegLengthBig()
{
return segsize_common(ZDIM,-5 * F1_0);
}
int DecreaseSegWidthBig()
{
return segsize_common(XDIM,-5 * F1_0);
}
int IncreaseSegWidthBig()
{
return segsize_common(XDIM,+5 * F1_0);
}
int IncreaseSegHeightBig()
{
return segsize_common(YDIM,+5 * F1_0);
}
int DecreaseSegHeightBig()
{
return segsize_common(YDIM,-5 * F1_0);
}
int IncreaseSegLengthDefault()
{
return segsize_common(ZDIM,+40 *F1_0);
}
int DecreaseSegLengthDefault()
{
return segsize_common(ZDIM,-40*F1_0);
}
int IncreaseSegWidthDefault()
{
return segsize_common(XDIM,+40*F1_0);
}
int DecreaseSegWidthDefault()
{
return segsize_common(XDIM,-40*F1_0);
}
int IncreaseSegHeightDefault()
{
return segsize_common(YDIM,+40 * F1_0);
}
int DecreaseSegHeightDefault()
{
return segsize_common(YDIM,-40 * F1_0);
}
// ---------------------------------------------------------------------------
int ToggleSegSizeMode(void)
{
SegSizeMode++;
if (SegSizeMode > SEGSIZEMODE_MAX)
SegSizeMode = SEGSIZEMODE_MIN;
return 1;
}
// ---------------------------------------------------------------------------
static int PerturbCursideCommon(fix amount)
{
auto &LevelSharedVertexState = LevelSharedSegmentState.get_vertex_state();
auto &Vertices = LevelSharedVertexState.get_vertices();
int saveSegSizeMode = SegSizeMode;
vms_vector fvec, rvec, uvec;
fix fmag, rmag, umag;
SegSizeMode = SEGSIZEMODE_CURSIDE;
Modified_vertex_index = 0;
auto &vcvertptr = Vertices.vcptr;
extract_forward_vector_from_segment(vcvertptr, Cursegp, fvec);
extract_right_vector_from_segment(vcvertptr, Cursegp, rvec);
extract_up_vector_from_segment(vcvertptr, Cursegp, uvec);
fmag = vm_vec_mag(fvec);
rmag = vm_vec_mag(rvec);
umag = vm_vec_mag(uvec);
range_for (const auto v, Side_to_verts[Curside])
{
vms_vector perturb_vec;
perturb_vec.x = fixmul(rmag, d_rand()*2 - 32767);
perturb_vec.y = fixmul(umag, d_rand()*2 - 32767);
perturb_vec.z = fixmul(fmag, d_rand()*2 - 32767);
scale_vert(Cursegp, Cursegp->verts[v], perturb_vec, amount);
}
// validate_segment(Cursegp);
// if (SegSizeMode) {
// for (i=0; i<MAX_SIDES_PER_SEGMENT; i++)
// if (Cursegp->children[i] != -1)
// validate_segment(&Segments[Cursegp->children[i]]);
// }
validate_modified_segments();
SegSizeMode = saveSegSizeMode;
Update_flags |= UF_WORLD_CHANGED;
mine_changed = 1;
return 1;
}
// ---------------------------------------------------------------------------
int PerturbCurside(void)
{
PerturbCursideCommon(F1_0/10);
return 1;
}
// ---------------------------------------------------------------------------
int PerturbCursideBig(void)
{
PerturbCursideCommon(F1_0/2);
return 1;
}
}