#include "quakedef.h"
+#include "polygon.h"
#define MAXRECURSIVEPORTALPLANES 1024
#define MAXRECURSIVEPORTALS 256
static int portal_markid = 0;
static float boxpoints[4*3];
-int Portal_ClipPolygonToPlane(float *in, float *out, int inpoints, int maxoutpoints, tinyplane_t *p)
-{
- int i, outpoints, prevside, side;
- float *prevpoint, prevdist, dist, dot;
-
- if (inpoints < 3)
- return inpoints;
- // begin with the last point, then enter the loop with the first point as current
- prevpoint = in + 3 * (inpoints - 1);
- prevdist = DotProduct(prevpoint, p->normal) - p->dist;
- prevside = prevdist >= 0 ? SIDE_FRONT : SIDE_BACK;
- i = 0;
- outpoints = 0;
- goto begin;
- for (;i < inpoints;i++)
- {
- prevpoint = in;
- prevdist = dist;
- prevside = side;
- in += 3;
-
-begin:
- dist = DotProduct(in, p->normal) - p->dist;
- side = dist >= 0 ? SIDE_FRONT : SIDE_BACK;
-
- if (prevside == SIDE_FRONT)
- {
- if (outpoints >= maxoutpoints)
- return -1;
- VectorCopy(prevpoint, out);
- out += 3;
- outpoints++;
- if (side == SIDE_FRONT)
- continue;
- }
- else if (side == SIDE_BACK)
- continue;
-
- // generate a split point
- if (outpoints >= maxoutpoints)
- return -1;
- dot = prevdist / (prevdist - dist);
- out[0] = prevpoint[0] + dot * (in[0] - prevpoint[0]);
- out[1] = prevpoint[1] + dot * (in[1] - prevpoint[1]);
- out[2] = prevpoint[2] + dot * (in[2] - prevpoint[2]);
- out += 3;
- outpoints++;
- }
-
- return outpoints;
-}
-
-
int Portal_PortalThroughPortalPlanes(tinyplane_t *clipplanes, int clipnumplanes, float *targpoints, int targnumpoints, float *out, int maxpoints)
{
int numpoints, i;
memcpy(&portaltemppoints[0][0][0], targpoints, numpoints * 3 * sizeof(float));
for (i = 0;i < clipnumplanes;i++)
{
- numpoints = Portal_ClipPolygonToPlane(&portaltemppoints[0][0][0], &portaltemppoints[1][0][0], numpoints, 256, clipplanes + i);
+ PolygonF_Divide(numpoints, &portaltemppoints[0][0][0], clipplanes[i].normal[0], clipplanes[i].normal[1], clipplanes[i].normal[2], clipplanes[i].dist, 1.0f/32.0f, 256, &portaltemppoints[1][0][0], &numpoints, 0, NULL, NULL);
if (numpoints < 3)
return numpoints;
memcpy(&portaltemppoints[0][0][0], &portaltemppoints[1][0][0], numpoints * 3 * sizeof(float));
{
if (Portal_RecursiveFlowSearch(p->past, eye, firstclipplane + numclipplanes, newpoints))
return true;
- }
+ }
else
{
if (Portal_RecursiveFlowSearch(p->past, eye, firstclipplane, numclipplanes))
return true;
- }
+ }
}
}
}
float *p;
loc0:
- if (node->contents < 0)
+ if (!node->plane)
{
((mleaf_t *)node)->portalmarkid = portal_markid;
return;
vec3_t center, v1, v2;
// if there is no model, it can not block visibility
- if (model == NULL)
+ if (model == NULL || !model->brush.PointInLeaf)
return true;
portal_markid++;
Mod_CheckLoaded(model);
- Portal_PolygonRecursiveMarkLeafs(model->nodes, polypoints, numpoints);
+ Portal_PolygonRecursiveMarkLeafs(model->brush.data_nodes, polypoints, numpoints);
- eyeleaf = Mod_PointInLeaf(eye, model);
+ eyeleaf = model->brush.PointInLeaf(model, eye);
// find the center by averaging
VectorClear(center);
typedef struct portalrecursioninfo_s
{
int exact;
- float nradius;
- qbyte *surfacemark;
- qbyte *leafmark;
+ int numfrustumplanes;
+ vec3_t boxmins;
+ vec3_t boxmaxs;
+ int numsurfaces;
+ int *surfacelist;
+ qbyte *surfacepvs;
+ int numleafs;
+ int *leaflist;
+ qbyte *leafpvs;
model_t *model;
vec3_t eye;
+ float *updateleafsmins;
+ float *updateleafsmaxs;
}
portalrecursioninfo_t;
-void Portal_RecursiveFlow_ExactMarkSurfaces(portalrecursioninfo_t *info, int *mark, int nummarksurfaces, int firstclipplane, int numclipplanes)
-{
- int i, j, *elements;
- msurface_t *surf;
- surfmesh_t *surfmesh;
- for (i = 0;i < nummarksurfaces;i++, mark++)
- {
- if (!info->surfacemark[*mark])
- {
- surf = info->model->surfaces + *mark;
- if (surf->poly_numverts)
- {
- if (surf->flags & SURF_PLANEBACK)
- {
- if (DotProduct(info->eye, surf->plane->normal) > surf->plane->dist)
- continue;
- }
- else
- {
- if (DotProduct(info->eye, surf->plane->normal) < surf->plane->dist)
- continue;
- }
- if (Portal_PortalThroughPortalPlanes(&portalplanes[firstclipplane], numclipplanes, surf->poly_verts, surf->poly_numverts, &portaltemppoints2[0][0], 256) < 3)
- continue;
- }
- else
- {
- for (surfmesh = surf->mesh;surfmesh;surfmesh = surfmesh->chain)
- {
- for (j = 0, elements = surfmesh->index;j < surfmesh->numtriangles;j++, elements += 3)
- {
- VectorCopy((surfmesh->verts + elements[0] * 4), trianglepoints[0]);
- VectorCopy((surfmesh->verts + elements[1] * 4), trianglepoints[1]);
- VectorCopy((surfmesh->verts + elements[2] * 4), trianglepoints[2]);
- if ((info->eye[0] - trianglepoints[0][0]) * ((trianglepoints[0][1] - trianglepoints[1][1]) * (trianglepoints[2][2] - trianglepoints[1][2]) - (trianglepoints[0][2] - trianglepoints[1][2]) * (trianglepoints[2][1] - trianglepoints[1][1]))
- + (info->eye[1] - trianglepoints[0][1]) * ((trianglepoints[0][2] - trianglepoints[1][2]) * (trianglepoints[2][0] - trianglepoints[1][0]) - (trianglepoints[0][0] - trianglepoints[1][0]) * (trianglepoints[2][2] - trianglepoints[1][2]))
- + (info->eye[2] - trianglepoints[0][2]) * ((trianglepoints[0][0] - trianglepoints[1][0]) * (trianglepoints[2][1] - trianglepoints[1][1]) - (trianglepoints[0][1] - trianglepoints[1][1]) * (trianglepoints[2][0] - trianglepoints[1][0])) > 0
- && Portal_PortalThroughPortalPlanes(&portalplanes[firstclipplane], numclipplanes, trianglepoints[0], 3, &portaltemppoints2[0][0], 256) >= 3)
- break;
- }
- if (j < surfmesh->numtriangles)
- break;
- }
- if (surfmesh == NULL)
- continue;
- }
- info->surfacemark[*mark] = true;
- }
- }
-}
-
void Portal_RecursiveFlow (portalrecursioninfo_t *info, mleaf_t *leaf, int firstclipplane, int numclipplanes)
{
mportal_t *p;
vec3_t center, v1, v2;
tinyplane_t *newplanes;
- if (info->leafmark)
- info->leafmark[leaf - info->model->leafs] = true;
+ for (i = 0;i < 3;i++)
+ {
+ if (info->updateleafsmins && info->updateleafsmins[i] > leaf->mins[i]) info->updateleafsmins[i] = leaf->mins[i];
+ if (info->updateleafsmaxs && info->updateleafsmaxs[i] < leaf->maxs[i]) info->updateleafsmaxs[i] = leaf->maxs[i];
+ }
+
+
+ if (info->leafpvs)
+ {
+ int leafindex = leaf - info->model->brush.data_leafs;
+ if (!CHECKPVSBIT(info->leafpvs, leafindex))
+ {
+ SETPVSBIT(info->leafpvs, leafindex);
+ info->leaflist[info->numleafs++] = leafindex;
+ }
+ }
// mark surfaces in leaf that can be seen through portal
- if (leaf->nummarksurfaces && info->surfacemark)
+ if (leaf->numleafsurfaces && info->surfacepvs)
{
- if (info->exact)
- Portal_RecursiveFlow_ExactMarkSurfaces(info, leaf->firstmarksurface, leaf->nummarksurfaces, firstclipplane, numclipplanes);
- else
- for (i = 0;i < leaf->nummarksurfaces;i++)
- info->surfacemark[leaf->firstmarksurface[i]] = true;
+ for (i = 0;i < leaf->numleafsurfaces;i++)
+ {
+ int surfaceindex = leaf->firstleafsurface[i];
+ if (!CHECKPVSBIT(info->surfacepvs, surfaceindex))
+ {
+ msurface_t *surface = info->model->data_surfaces + surfaceindex;
+ if (BoxesOverlap(surface->mins, surface->maxs, info->boxmins, info->boxmaxs))
+ {
+ if (info->exact)
+ {
+ int j;
+ const int *elements;
+ const float *vertex3f;
+ float v[9], trimins[3], trimaxs[3];
+ vertex3f = surface->groupmesh->data_vertex3f;
+ elements = (surface->groupmesh->data_element3i + 3 * surface->num_firsttriangle);
+ for (j = 0;j < surface->num_triangles;j++, elements += 3)
+ {
+ VectorCopy(vertex3f + elements[0] * 3, v + 0);
+ VectorCopy(vertex3f + elements[1] * 3, v + 3);
+ VectorCopy(vertex3f + elements[2] * 3, v + 6);
+ if (PointInfrontOfTriangle(info->eye, v + 0, v + 3, v + 6))
+ {
+ trimins[0] = min(v[0], min(v[3], v[6]));
+ trimaxs[0] = max(v[0], max(v[3], v[6]));
+ trimins[1] = min(v[1], min(v[4], v[7]));
+ trimaxs[1] = max(v[1], max(v[4], v[7]));
+ trimins[2] = min(v[2], min(v[5], v[8]));
+ trimaxs[2] = max(v[2], max(v[5], v[8]));
+ if (BoxesOverlap(trimins, trimaxs, info->boxmins, info->boxmaxs) && Portal_PortalThroughPortalPlanes(&portalplanes[firstclipplane], numclipplanes, v, 3, &portaltemppoints2[0][0], 256) >= 3)
+ {
+ SETPVSBIT(info->surfacepvs, surfaceindex);
+ info->surfacelist[info->numsurfaces++] = surfaceindex;
+ break;
+ }
+ }
+ }
+ }
+ else
+ {
+ SETPVSBIT(info->surfacepvs, surfaceindex);
+ info->surfacelist[info->numsurfaces++] = surfaceindex;
+ }
+ }
+ }
+ }
}
// follow portals into other leafs
for (p = leaf->portals;p;p = p->next)
{
- // only flow through portals facing away from the viewer
+ // only flow through portals facing the viewer
dist = PlaneDiff(info->eye, (&p->plane));
- if (dist < 0 && dist >= info->nradius)
+ if (dist < 0 && BoxesOverlap(p->past->mins, p->past->maxs, info->boxmins, info->boxmaxs))
{
newpoints = Portal_PortalThroughPortalPlanes(&portalplanes[firstclipplane], numclipplanes, (float *) p->points, p->numpoints, &portaltemppoints2[0][0], 256);
if (newpoints < 3)
newplanes = &portalplanes[firstclipplane + numclipplanes];
for (prev = newpoints - 1, i = 0;i < newpoints;prev = i, i++)
{
- VectorSubtract(info->eye, portaltemppoints2[i], v1);
- VectorSubtract(portaltemppoints2[prev], portaltemppoints2[i], v2);
+ VectorSubtract(portaltemppoints2[prev], portaltemppoints2[i], v1);
+ VectorSubtract(info->eye, portaltemppoints2[i], v2);
CrossProduct(v1, v2, newplanes[i].normal);
VectorNormalizeFast(newplanes[i].normal);
newplanes[i].dist = DotProduct(info->eye, newplanes[i].normal);
}
}
-void Portal_Visibility(model_t *model, const vec3_t eye, qbyte *leafmark, qbyte *surfacemark, const mplane_t *frustumplanes, int numfrustumplanes, int exact, float radius)
+void Portal_RecursiveFindLeafForFlow(portalrecursioninfo_t *info, mnode_t *node)
+{
+ if (node->plane)
+ {
+ float f = DotProduct(info->eye, node->plane->normal) - node->plane->dist;
+ if (f > -0.1)
+ Portal_RecursiveFindLeafForFlow(info, node->children[0]);
+ if (f < 0.1)
+ Portal_RecursiveFindLeafForFlow(info, node->children[1]);
+ }
+ else
+ {
+ mleaf_t *leaf = (mleaf_t *)node;
+ if (leaf->portals)
+ Portal_RecursiveFlow(info, leaf, 0, info->numfrustumplanes);
+ }
+}
+
+void Portal_Visibility(model_t *model, const vec3_t eye, int *leaflist, qbyte *leafpvs, int *numleafspointer, int *surfacelist, qbyte *surfacepvs, int *numsurfacespointer, const mplane_t *frustumplanes, int numfrustumplanes, int exact, const float *boxmins, const float *boxmaxs, float *updateleafsmins, float *updateleafsmaxs)
{
int i;
portalrecursioninfo_t info;
// if there is no model, it can not block visibility
if (model == NULL)
- Host_Error("Portal_Visibility: NULL model\n");
+ {
+ Con_Print("Portal_Visibility: NULL model\n");
+ return;
+ }
Mod_CheckLoaded(model);
- if (model->type != mod_brush)
- Host_Error("Portal_Visibility: not a brush model\n");
+ if (!model->brush.num_portals)
+ {
+ Con_Print("Portal_Visibility: not a brush model\n");
+ return;
+ }
// put frustum planes (if any) into tinyplane format at start of buffer
for (i = 0;i < numfrustumplanes;i++)
ranoutofportalplanes = false;
ranoutofportals = false;
- info.nradius = -radius;
+ VectorCopy(boxmins, info.boxmins);
+ VectorCopy(boxmaxs, info.boxmaxs);
info.exact = exact;
- info.surfacemark = surfacemark;
- info.leafmark = leafmark;
+ info.numsurfaces = 0;
+ info.surfacelist = surfacelist;
+ info.surfacepvs = surfacepvs;
+ info.numleafs = 0;
+ info.leaflist = leaflist;
+ info.leafpvs = leafpvs;
info.model = model;
VectorCopy(eye, info.eye);
+ info.numfrustumplanes = numfrustumplanes;
+ info.updateleafsmins = updateleafsmins;
+ info.updateleafsmaxs = updateleafsmaxs;
- Portal_RecursiveFlow(&info, Mod_PointInLeaf(eye, model), 0, numfrustumplanes);
+ Portal_RecursiveFindLeafForFlow(&info, model->brush.data_nodes);
if (ranoutofportalplanes)
Con_Printf("Portal_RecursiveFlow: ran out of %d plane stack when recursing through portals\n", MAXRECURSIVEPORTALPLANES);
if (ranoutofportals)
Con_Printf("Portal_RecursiveFlow: ran out of %d portal stack when recursing through portals\n", MAXRECURSIVEPORTALS);
+ if (numsurfacespointer)
+ *numsurfacespointer = info.numsurfaces;
+ if (numleafspointer)
+ *numleafspointer = info.numleafs;
}
projects / xonotic / darkplaces.git / blobdiff