… | |
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48 | |
48 | |
49 | void octant::clear_visibility (visibility_base *vs) |
49 | void octant::clear_visibility (visibility_base *vs) |
50 | { |
50 | { |
51 | ((oct_visibility *)vs)->vismap.clear (); |
51 | ((oct_visibility *)vs)->vismap.clear (); |
52 | } |
52 | } |
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53 | |
53 | octant::~octant () |
54 | octant::~octant () |
54 | { |
55 | { |
55 | for (fill = 8; fill--; ) |
56 | for (fill = 8; fill--; ) |
56 | delete sub[fill]; |
57 | delete sub[fill]; |
57 | } |
58 | } |
… | |
… | |
105 | |
106 | |
106 | void octant::remove (entity *e) |
107 | void octant::remove (entity *e) |
107 | { |
108 | { |
108 | } |
109 | } |
109 | |
110 | |
110 | bool octant::depth_pass (view &ctx) |
111 | bool octant::detect_visibility (view &ctx) |
111 | { |
112 | { |
112 | oct_visibility &vs = *(oct_visibility *)get_visibility (ctx); |
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113 | |
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114 | GLfloat extent2 = 0.5F * (GLfloat)extent; |
113 | GLfloat extent2 = 0.5F * (GLfloat)extent; |
115 | sector centeri = orig + (extent >> 1) - ctx.orig; |
114 | sector centeri = orig + (extent >> 1) - ctx.orig; |
116 | point centerf = point (centeri) + ((extent & 1) ? 0.5F : 0.F); |
115 | point centerf = point (centeri) + ((extent & 1) ? 0.5F : 0.F); |
117 | |
116 | |
118 | GLfloat rad = ctx.diagfact * extent2; |
117 | GLfloat rad = ctx.diagfact * extent2; |
119 | |
118 | |
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119 | if (!overlap (ctx.frustum.c, sphere (centerf, rad))) |
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120 | return false; |
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121 | |
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122 | oct_visibility &vs = *(oct_visibility *)get_visibility (ctx); |
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123 | |
120 | if (orig <= ctx.orig && ctx.orig <= orig + extent) |
124 | if (orig <= ctx.orig && ctx.orig <= orig + extent) |
121 | vs.state = PARTIAL; |
125 | vs.state = PARTIAL; |
122 | else |
126 | else |
123 | { |
127 | { |
124 | if (ctx.frustum.t.distance (centerf) < -rad) return false; |
128 | if (distance (ctx.frustum.t, centerf) < -rad) return false; |
125 | if (ctx.frustum.b.distance (centerf) < -rad) return false; |
129 | if (distance (ctx.frustum.b, centerf) < -rad) return false; |
126 | if (ctx.frustum.l.distance (centerf) < -rad) return false; |
130 | if (distance (ctx.frustum.l, centerf) < -rad) return false; |
127 | if (ctx.frustum.r.distance (centerf) < -rad) return false; |
131 | if (distance (ctx.frustum.r, centerf) < -rad) return false; |
128 | if (ctx.frustum.n.distance (centerf) < -rad) return false; |
132 | if (distance (ctx.frustum.n, centerf) < -rad) return false; |
129 | |
133 | |
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134 | #if 0 |
130 | GLfloat fd = ctx.frustum.f.distance (centerf); |
135 | GLfloat fd = distance (ctx.frustum.f, centerf); |
131 | |
136 | |
132 | if (fd < -(ctx.c_far - ctx.z_far) -rad * 3.F) |
137 | if (fd < -(ctx.c_far - ctx.z_far) -rad * 3.F) |
133 | return false; |
138 | return false; |
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139 | #endif |
134 | } |
140 | } |
135 | |
141 | |
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142 | #if 0 |
136 | if (vs.state == OCCLUDED) |
143 | if (vs.state == OCCLUDED) |
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144 | { |
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145 | if (size ()) |
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146 | ctx.vislist.push_back (this); |
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147 | //return false; |
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148 | } |
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149 | #endif |
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150 | |
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151 | GLfloat z = ctx.z_near + distance (ctx.frustum.n, centerf) + rad; |
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152 | if (ctx.perspfact * extent / z < 1.) // very crude "too small to see" check |
137 | return false; |
153 | return false; |
138 | |
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139 | GLfloat z = ctx.z_near + ctx.frustum.n.distance (centerf) + rad; |
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140 | //printf ("z %f, perspfact %f, z*p %f\n", z, ctx.perspfact, ctx.perspfact / z); |
154 | //printf ("z %f, perspfact %f, z*p %f\n", z, ctx.perspfact, ctx.perspfact / z); |
141 | |
155 | |
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156 | #if 0 |
142 | if (vs.state == PARTIAL || vs.state == FULL) |
157 | if (vs.state == PARTIAL || vs.state == FULL) |
143 | ctx.nc_far = max (ctx.nc_far, z); |
158 | ctx.nc_far = max (ctx.nc_far, z); |
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159 | #endif |
144 | |
160 | |
145 | // node to start with |
161 | // node to start with |
146 | unsigned char si = centeri.x > 0 ? 1 : 0 |
162 | unsigned char si = centeri.x > 0 ? 1 : 0 |
147 | | centeri.y > 0 ? 2 : 0 |
163 | | centeri.y > 0 ? 2 : 0 |
148 | | centeri.z > 0 ? 4 : 0; |
164 | | centeri.z > 0 ? 4 : 0; |
149 | |
165 | |
150 | //printf ("si %d C %Ld,%Ld,%Ld\n", si, centeri.x, centeri.y, centeri.z); |
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151 | |
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152 | // bit-toggle to find next child for front-to-back order |
166 | // bit-toggle to find next child for front-to-back order |
153 | static unsigned char toggle[8+1] |
167 | static unsigned char toggle[8+1] |
154 | = { 0, 0^1, 1^2, 2^4, 4^3, 3^5, 5^6, 6^7, 0 }; |
168 | = { 0, 0^1, 1^2, 2^4, 4^3, 3^5, 5^6, 6^7, 0 }; |
155 | |
169 | |
156 | unsigned char *next = toggle; |
170 | unsigned char *next = toggle; |
157 | do |
171 | do |
158 | { |
172 | { |
159 | si ^= *next; |
173 | si ^= *next; |
160 | |
174 | |
161 | if (sub[si]) |
175 | if (sub[si]) |
162 | sub[si]->depth_pass (ctx); |
176 | sub[si]->detect_visibility (ctx); |
163 | } |
177 | } |
164 | while (*++next); |
178 | while (*++next); |
165 | |
179 | |
166 | if (size () |
180 | if (size () |
167 | && (vs.state == PARTIAL || vs.state == FULL)) |
181 | && (vs.state == PARTIAL || vs.state == FULL || vs.state == OCCLUDED)) |
168 | { |
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169 | ctx.nz_far = max (ctx.nz_far, z); |
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170 | display (ctx); |
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171 | ctx.vislist.push_back (this); |
182 | ctx.vislist.push_back (this); |
172 | } |
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173 | |
183 | |
174 | return true; |
184 | return true; |
175 | } |
185 | } |
176 | |
186 | |
177 | void octant::display (view &ctx) |
187 | void octant::display (view &ctx) |
… | |
… | |
202 | #endif |
212 | #endif |
203 | oct_visibility &vs = *(oct_visibility *)get_visibility (ctx); |
213 | oct_visibility &vs = *(oct_visibility *)get_visibility (ctx); |
204 | |
214 | |
205 | if (vs.state == OCCLUDED) |
215 | if (vs.state == OCCLUDED) |
206 | { |
216 | { |
207 | abort (); |
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208 | if (ctx.pass == view::POSTDEPTH) |
217 | if (ctx.pass == view::POSTDEPTH) |
209 | { |
218 | { |
210 | if (!vb_bbox) |
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211 | { |
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212 | sector s = orig - ctx.orig; |
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213 | gl::gen_bbox (vb_bbox, s, s + extent); |
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214 | } |
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215 | |
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216 | ctx.begin_occ_query (*this, 0); |
219 | ctx.begin_occ_query (*this, 0); |
217 | vb_bbox.draw (gl::bbox_mode, 0, gl::bbox_count); |
220 | sector s = orig - ctx.orig; |
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221 | gl::draw_bbox (s, s + extent); |
218 | ctx.end_occ_query (); |
222 | ctx.end_occ_query (); |
219 | } |
223 | } |
220 | } |
224 | } |
221 | else |
225 | else |
222 | { |
226 | { |
223 | for (iterator i = end (); i != begin (); ) |
227 | int nvis = 0; |
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228 | |
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229 | for (iterator i = begin (); i != end (); ) |
224 | { |
230 | { |
225 | entity *e = *--i; |
231 | entity *e = *i++; |
226 | |
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227 | if (!ctx.may_draw (e)) |
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228 | continue; |
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229 | |
232 | |
230 | evis &evs = vs.vismap[e]; |
233 | evis &evs = vs.vismap[e]; |
231 | |
234 | |
232 | if (ctx.pass == view::POSTDEPTH) |
235 | if (ctx.pass == view::POSTDEPTH) |
233 | { |
236 | { |
234 | if (evs.state == OCCLUDED) |
237 | if (evs.state == OCCLUDED) |
235 | { |
238 | { |
236 | if (!e->vb_bbox) |
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237 | gl::gen_bbox (e->vb_bbox, e->a - ctx.orig, e->b - ctx.orig); |
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238 | |
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239 | ctx.begin_occ_query (*this, e); |
239 | ctx.begin_occ_query (*this, e); |
240 | e->vb_bbox.draw (gl::bbox_mode, 0, gl::bbox_count); |
240 | gl::draw_bbox (e->a - ctx.orig, e->b - ctx.orig); |
241 | ctx.end_occ_query (); |
241 | ctx.end_occ_query (); |
242 | } |
242 | } |
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243 | else |
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244 | nvis++; |
243 | } |
245 | } |
244 | else |
246 | else |
245 | { |
247 | { |
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248 | if (!ctx.may_draw (e)) |
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249 | continue; |
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250 | |
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251 | |
246 | if (evs.state != OCCLUDED) |
252 | if (evs.state != OCCLUDED) |
247 | { |
253 | { |
248 | sector center = ((e->a + e->b) >> 1) - ctx.orig; |
254 | sector center = ((e->a + e->b) >> 1) - ctx.orig; |
249 | GLfloat z = norm (vec3 (center)); |
255 | GLfloat z = length (vec3 (center)); |
250 | ctx.pixfact = ctx.perspfact / z; |
256 | ctx.pixfact = ctx.perspfact / z; |
251 | |
257 | |
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258 | ctx.nz_far = max (ctx.nz_far, z + extent); |
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259 | ctx.nz_near = min (ctx.nz_near, z - extent); |
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260 | |
252 | if (ctx.pass == view::DEPTH || evs.last + 1. > timer.now) |
261 | if (ctx.pass == view::DEPTH || evs.last + 0.3 > timer.now) |
253 | e->draw (ctx); |
262 | e->draw (ctx); |
254 | else |
263 | else |
255 | { |
264 | { |
256 | evs.last = timer.now; |
265 | evs.last = timer.now; |
257 | ctx.begin_occ_query (*this, e); |
266 | ctx.begin_occ_query (*this, e); |
… | |
… | |
259 | ctx.end_occ_query (); |
268 | ctx.end_occ_query (); |
260 | } |
269 | } |
261 | } |
270 | } |
262 | } |
271 | } |
263 | } |
272 | } |
264 | } |
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265 | } |
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266 | |
273 | |
267 | #if 0 |
274 | #if 1 |
268 | void octant::draw_bbox (view &ctx) |
275 | if (ctx.pass == view::POSTDEPTH && nvis == 0 && size ()) |
269 | { |
276 | vs.state = OCCLUDED; |
270 | sector s = orig - ctx.orig; |
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271 | |
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272 | gl::draw_bbox (ctx, s, s + extent); |
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273 | } |
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274 | #endif |
277 | #endif |
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278 | } |
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279 | } |
275 | |
280 | |
276 | void octant::event (occ_query &ev) |
281 | void octant::event (occ_query &ev) |
277 | { |
282 | { |
278 | oct_visibility &vs = *(oct_visibility *)get_visibility (ev.ctx); |
283 | oct_visibility &vs = *(oct_visibility *)get_visibility (ev.ctx); |
279 | entity *e = (entity *)ev.id; |
284 | entity *e = (entity *)ev.id; |
… | |
… | |
282 | { |
287 | { |
283 | evis &evs = vs.vismap[e]; |
288 | evis &evs = vs.vismap[e]; |
284 | evs.state = ev.count ? FULL : OCCLUDED; |
289 | evs.state = ev.count ? FULL : OCCLUDED; |
285 | } |
290 | } |
286 | else |
291 | else |
287 | { |
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288 | vs.state = ev.count ? FULL : OCCLUDED; |
292 | vs.state = ev.count ? FULL : OCCLUDED; |
289 | } |
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290 | |
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291 | #if 0 |
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292 | visibility_state &vs = ev.v.vismap[this]; |
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293 | |
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294 | vs.last = timer.now; |
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295 | vs.state = ev.r <= 0 |
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296 | ? visibility_state::OCCLUDED |
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297 | : visibility_state::FULL; |
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298 | #endif |
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299 | } |
293 | } |
300 | |
294 | |
301 | |
295 | |