/*
* 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.
*/
/*
*
* Texture map assignment.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <math.h>
#include <string.h>
#include "inferno.h"
#include "segment.h"
#include "seguvs.h"
#include "editor.h"
#include "editor/esegment.h"
#include "maths.h"
#include "dxxerror.h"
#include "kdefs.h"
#include "compiler-range_for.h"
static uvl compute_uv_side_center(const unique_segment &segp, sidenum_fast_t sidenum);
static void rotate_uv_points_on_side(unique_segment &segp, sidenum_fast_t sidenum, const std::array<fix, 4> &rotmat, const uvl &uvcenter);
// -----------------------------------------------------------
int TexFlipX()
{
const auto uvcenter = compute_uv_side_center(Cursegp, Curside);
std::array<fix, 4> rotmat;
// Create a rotation matrix
rotmat[0] = -0xffff;
rotmat[1] = 0;
rotmat[2] = 0;
rotmat[3] = 0xffff;
rotate_uv_points_on_side(Cursegp, Curside, rotmat, uvcenter);
Update_flags |= UF_WORLD_CHANGED;
return 1;
}
// -----------------------------------------------------------
int TexFlipY()
{
const auto uvcenter = compute_uv_side_center(Cursegp, Curside);
std::array<fix, 4> rotmat;
// Create a rotation matrix
rotmat[0] = 0xffff;
rotmat[1] = 0;
rotmat[2] = 0;
rotmat[3] = -0xffff;
rotate_uv_points_on_side(Cursegp, Curside, rotmat, uvcenter);
Update_flags |= UF_WORLD_CHANGED;
return 1;
}
// -----------------------------------------------------------
static int DoTexSlideLeft(int value)
{
auto &LevelSharedVertexState = LevelSharedSegmentState.get_vertex_state();
auto &Vertices = LevelSharedVertexState.get_vertices();
uvl duvl03;
fix dist;
auto &vp = Side_to_verts[Curside];
auto &uvls = Cursegp->unique_segment::sides[Curside].uvls;
auto &vcvertptr = Vertices.vcptr;
dist = vm_vec_dist(vcvertptr(Cursegp->verts[vp[3]]), vcvertptr(Cursegp->verts[vp[0]]));
dist *= value;
if (dist < F1_0/(64*value))
dist = F1_0/(64*value);
duvl03.u = fixdiv(uvls[3].u - uvls[0].u,dist);
duvl03.v = fixdiv(uvls[3].v - uvls[0].v,dist);
range_for (auto &v, uvls)
{
v.u -= duvl03.u;
v.v -= duvl03.v;
}
Update_flags |= UF_WORLD_CHANGED;
return 1;
}
int TexSlideLeft()
{
return DoTexSlideLeft(3);
}
int TexSlideLeftBig()
{
return DoTexSlideLeft(1);
}
// -----------------------------------------------------------
static int DoTexSlideUp(int value)
{
auto &LevelSharedVertexState = LevelSharedSegmentState.get_vertex_state();
auto &Vertices = LevelSharedVertexState.get_vertices();
uvl duvl03;
fix dist;
auto &vp = Side_to_verts[Curside];
auto &uvls = Cursegp->unique_segment::sides[Curside].uvls;
auto &vcvertptr = Vertices.vcptr;
dist = vm_vec_dist(vcvertptr(Cursegp->verts[vp[1]]), vcvertptr(Cursegp->verts[vp[0]]));
dist *= value;
if (dist < F1_0/(64*value))
dist = F1_0/(64*value);
duvl03.u = fixdiv(uvls[1].u - uvls[0].u,dist);
duvl03.v = fixdiv(uvls[1].v - uvls[0].v,dist);
range_for (auto &v, uvls)
{
v.u -= duvl03.u;
v.v -= duvl03.v;
}
Update_flags |= UF_WORLD_CHANGED;
return 1;
}
int TexSlideUp()
{
return DoTexSlideUp(3);
}
int TexSlideUpBig()
{
return DoTexSlideUp(1);
}
// -----------------------------------------------------------
static int DoTexSlideDown(int value)
{
auto &LevelSharedVertexState = LevelSharedSegmentState.get_vertex_state();
auto &Vertices = LevelSharedVertexState.get_vertices();
uvl duvl03;
fix dist;
auto &vp = Side_to_verts[Curside];
auto &uvls = Cursegp->unique_segment::sides[Curside].uvls;
auto &vcvertptr = Vertices.vcptr;
dist = vm_vec_dist(vcvertptr(Cursegp->verts[vp[1]]), vcvertptr(Cursegp->verts[vp[0]]));
dist *= value;
if (dist < F1_0/(64*value))
dist = F1_0/(64*value);
duvl03.u = fixdiv(uvls[1].u - uvls[0].u,dist);
duvl03.v = fixdiv(uvls[1].v - uvls[0].v,dist);
range_for (auto &v, uvls)
{
v.u += duvl03.u;
v.v += duvl03.v;
}
Update_flags |= UF_WORLD_CHANGED;
return 1;
}
int TexSlideDown()
{
return DoTexSlideDown(3);
}
int TexSlideDownBig()
{
return DoTexSlideDown(1);
}
// -----------------------------------------------------------
// Compute the center of the side in u,v coordinates.
static uvl compute_uv_side_center(const unique_segment &segp, const sidenum_fast_t sidenum)
{
uvl uvcenter{};
range_for (auto &v, segp.sides[sidenum].uvls)
{
uvcenter.u += v.u;
uvcenter.v += v.v;
}
uvcenter.u /= 4;
uvcenter.v /= 4;
return uvcenter;
}
// -----------------------------------------------------------
// rotate point *uv by matrix rotmat, return *uvrot
static uvl rotate_uv_point(const std::array<fix, 4> &rotmat, const uvl &uv, const uvl &uvcenter)
{
const auto centered_u = uv.u - uvcenter.u;
const auto centered_v = uv.v - uvcenter.v;
return {
fixmul(centered_u, rotmat[0]) + fixmul(centered_v, rotmat[1]) + uvcenter.u,
fixmul(centered_u, rotmat[2]) + fixmul(centered_v, rotmat[3]) + uvcenter.v,
0
};
}
// -----------------------------------------------------------
// Compute the center of the side in u,v coordinates.
static void rotate_uv_points_on_side(unique_segment &segp, const sidenum_fast_t sidenum, const std::array<fix, 4> &rotmat, const uvl &uvcenter)
{
range_for (auto &v, segp.sides[sidenum].uvls)
{
v = rotate_uv_point(rotmat, v, uvcenter);
}
}
// -----------------------------------------------------------
// ang is in 0..ffff = 0..359.999 degrees
// rotmat is filled in with 4 fixes
static std::array<fix, 4> create_2d_rotation_matrix(fix ang)
{
const auto &&a = fix_sincos(ang);
const auto &sinang = a.sin;
const auto &cosang = a.cos;
return {{
cosang,
sinang,
-sinang,
cosang
}};
}
// -----------------------------------------------------------
static int DoTexRotateLeft(int value)
{
const auto uvcenter = compute_uv_side_center(Cursegp, Curside);
// Create a rotation matrix
const auto rotmat = create_2d_rotation_matrix(-F1_0/value);
rotate_uv_points_on_side(Cursegp, Curside, rotmat, uvcenter);
Update_flags |= UF_WORLD_CHANGED;
return 1;
}
int TexRotateLeft()
{
return DoTexRotateLeft(192);
}
int TexRotateLeftBig()
{
return DoTexRotateLeft(64);
}
// -----------------------------------------------------------
static int DoTexSlideRight(int value)
{
auto &LevelSharedVertexState = LevelSharedSegmentState.get_vertex_state();
auto &Vertices = LevelSharedVertexState.get_vertices();
uvl duvl03;
fix dist;
auto &vp = Side_to_verts[Curside];
auto &uvls = Cursegp->unique_segment::sides[Curside].uvls;
auto &vcvertptr = Vertices.vcptr;
dist = vm_vec_dist(vcvertptr(Cursegp->verts[vp[3]]), vcvertptr(Cursegp->verts[vp[0]]));
dist *= value;
if (dist < F1_0/(64*value))
dist = F1_0/(64*value);
duvl03.u = fixdiv(uvls[3].u - uvls[0].u,dist);
duvl03.v = fixdiv(uvls[3].v - uvls[0].v,dist);
range_for (auto &v, uvls)
{
v.u += duvl03.u;
v.v += duvl03.v;
}
Update_flags |= UF_WORLD_CHANGED;
return 1;
}
int TexSlideRight()
{
return DoTexSlideRight(3);
}
int TexSlideRightBig()
{
return DoTexSlideRight(1);
}
// -----------------------------------------------------------
static int DoTexRotateRight(int value)
{
const auto uvcenter = compute_uv_side_center(Cursegp, Curside);
// Create a rotation matrix
const auto rotmat = create_2d_rotation_matrix(F1_0/value);
rotate_uv_points_on_side(Cursegp, Curside, rotmat, uvcenter);
Update_flags |= UF_WORLD_CHANGED;
return 1;
}
int TexRotateRight()
{
return DoTexRotateRight(192);
}
int TexRotateRightBig()
{
return DoTexRotateRight(64);
}
// -----------------------------------------------------------
int TexSelectActiveEdge()
{
return 1;
}
// -----------------------------------------------------------
int TexRotate90Degrees()
{
const auto uvcenter = compute_uv_side_center(Cursegp, Curside);
// Create a rotation matrix
const auto rotmat = create_2d_rotation_matrix(F1_0/4);
rotate_uv_points_on_side(Cursegp, Curside, rotmat, uvcenter);
Update_flags |= UF_WORLD_CHANGED;
return 1;
}
// -----------------------------------------------------------
int TexSetDefault()
{
Num_tilings = 1;
Stretch_scale_x = F1_0;
Stretch_scale_y = F1_0;
assign_default_uvs_to_side(Cursegp,Curside);
Update_flags |= UF_GAME_VIEW_CHANGED;
return 1;
}
// -----------------------------------------------------------
int TexIncreaseTiling()
{
Num_tilings++;
assign_default_uvs_to_side(Cursegp, Curside);
Update_flags |= UF_GAME_VIEW_CHANGED;
return 1;
}
// -----------------------------------------------------------
int TexDecreaseTiling()
{
if (--Num_tilings < 1)
Num_tilings = 1;
assign_default_uvs_to_side(Cursegp, Curside);
Update_flags |= UF_GAME_VIEW_CHANGED;
return 1;
}
// direction = -1 or 1 depending on direction
static int TexStretchCommon(int direction)
{
fix *sptr;
if ((Curedge == 0) || (Curedge == 2))
sptr = &Stretch_scale_x;
else
sptr = &Stretch_scale_y;
*sptr += direction*F1_0/64;
if (*sptr < F1_0/16)
*sptr = F1_0/16;
if (*sptr > 2*F1_0)
*sptr = 2*F1_0;
stretch_uvs_from_curedge(Cursegp, Curside);
editor_status_fmt("Stretch scale = %7.4f, use Set Default to return to 1.0", f2fl(*sptr));
Update_flags |= UF_GAME_VIEW_CHANGED;
return 1;
}
int TexStretchDown(void)
{
return TexStretchCommon(-1);
}
int TexStretchUp(void)
{
return TexStretchCommon(1);
}