423 lines
11 KiB
C
423 lines
11 KiB
C
/*
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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 "inferno.h"
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#include "editor.h"
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#include "error.h"
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#include "segment.h"
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#include "gameseg.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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int Modified_vertices[MAX_MODIFIED_VERTICES];
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int Modified_vertex_index = 0;
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// ------------------------------------------------------------------------------------------
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void validate_modified_segments(void)
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{
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int v,w,v0,seg;
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char modified_segments[MAX_SEGMENTS];
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for (v=0; v<=Highest_segment_index; v++)
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modified_segments[v] = 0;
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for (v=0; v<Modified_vertex_index; v++) {
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v0 = Modified_vertices[v];
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for (seg = 0; seg <= Highest_segment_index; seg++) {
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short *vp = Segments[seg].verts;
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if (Segments[seg].segnum != -1)
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for (w=0; w<MAX_VERTICES_PER_SEGMENT; w++)
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if (*vp++ == v0)
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modified_segments[seg] = 1;
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}
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}
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for (v=0; v<=Highest_segment_index; v++)
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if (modified_segments[v]) {
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int s;
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validate_segment(&Segments[v]);
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for (s=0; s<MAX_SIDES_PER_SEGMENT; s++) {
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Num_tilings = 1;
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assign_default_uvs_to_side(&Segments[v], s);
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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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void scale_vert_aux(int vertex_ind, vms_vector *vp, fix scale_factor)
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{
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vms_vector *vertp = &Vertices[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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void scale_vert(segment *sp, int vertex_ind, vms_vector *vp, fix scale_factor)
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{
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switch (SegSizeMode) {
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case SEGSIZEMODE_FREE:
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if (is_free_vertex(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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int v;
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for (v=0; v<4; v++)
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if (sp->verts[Side_to_verts[Curside][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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int v;
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for (v=0; v<2; v++)
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if (sp->verts[Side_to_verts[Curside][(Curedge+v)%4]] == 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 (sp->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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void scale_free_verts(segment *sp, vms_vector *vp, int side, fix scale_factor)
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{
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int v;
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sbyte *verts;
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int vertex_ind;
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verts = Side_to_verts[side];
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for (v=0; v<4; v++) {
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vertex_ind = sp->verts[(int) verts[v]];
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if (SegSizeMode || is_free_vertex(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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void med_scale_segment_new(segment *sp, int dimension, 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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switch (dimension) {
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case XDIM:
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scale_free_verts(sp, &mat.rvec, WLEFT, -amount);
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scale_free_verts(sp, &mat.rvec, WRIGHT, +amount);
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break;
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case YDIM:
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scale_free_verts(sp, &mat.uvec, WBOTTOM, -amount);
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scale_free_verts(sp, &mat.uvec, WTOP, +amount);
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break;
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case ZDIM:
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scale_free_verts(sp, &mat.fvec, WFRONT, -amount);
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scale_free_verts(sp, &mat.fvec, WBACK, +amount);
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break;
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}
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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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void extract_vector_from_segment_side(segment *sp, int side, vms_vector *vp, int vla, int vlb, int vra, int vrb)
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{
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vms_vector v1, v2;
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vm_vec_sub(&v1,&Vertices[sp->verts[Side_to_verts[side][vra]]],&Vertices[sp->verts[Side_to_verts[side][vla]]]);
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vm_vec_sub(&v2,&Vertices[sp->verts[Side_to_verts[side][vrb]]],&Vertices[sp->verts[Side_to_verts[side][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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// 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(segment *sp, int sidenum, vms_vector *vp)
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{
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extract_vector_from_segment_side(sp, sidenum, vp, 3, 2, 0, 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(segment *sp, int sidenum, vms_vector *vp)
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{
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extract_vector_from_segment_side(sp, sidenum, vp, 1, 2, 0, 3);
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}
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// -----------------------------------------------------------------------------
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// Increase the size of Cursegp in dimension dimension by amount
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int segsize_common(int dimension, fix amount)
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{
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int i;
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int propagated[MAX_SIDES_PER_SEGMENT];
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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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extract_forward_vector_from_segment(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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for (i=0; i<MAX_SIDES_PER_SEGMENT; i++)
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propagated[i] = 0;
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for (i=0; i<MAX_SIDES_PER_SEGMENT; i++)
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if (IS_CHILD(Cursegp->children[i])) {
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int s;
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for (s=0; s<MAX_SIDES_PER_SEGMENT; s++)
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propagated[s]++;
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propagated[(int) Side_opposite[i]]--;
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med_propagate_tmaps_to_segments(&Segments[Cursegp->children[i]],Cursegp,1);
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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 (i=0; i<MAX_SIDES_PER_SEGMENT; i++)
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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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// ---------- 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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// ---------------------------------------------------------------------------
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int PerturbCursideCommon(fix amount)
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{
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int saveSegSizeMode = SegSizeMode;
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vms_vector fvec, rvec, uvec;
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fix fmag, rmag, umag;
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int v;
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SegSizeMode = SEGSIZEMODE_CURSIDE;
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Modified_vertex_index = 0;
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extract_forward_vector_from_segment(Cursegp, &fvec);
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extract_right_vector_from_segment(Cursegp, &rvec);
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extract_up_vector_from_segment(Cursegp, &uvec);
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fmag = vm_vec_mag(&fvec);
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rmag = vm_vec_mag(&rvec);
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umag = vm_vec_mag(&uvec);
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for (v=0; v<4; v++) {
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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[Side_to_verts[Curside][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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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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