absence_thelab: 1cffe3409164 src/3deng/3dscene.cpp

absence_thelab

view src/3deng/3dscene.cpp @ 0:1cffe3409164

initial commit

author	John Tsiombikas <nuclear@member.fsf.org>
date	Thu, 23 Oct 2014 01:46:07 +0300
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1 #include <string>

2 #include "3dscene.h"

4 using std::string;

6 Scene::Scene(GraphicsContext *gc) {

7 this->gc = gc;

9 ActiveCamera = 0;

10 Shadows = false;

11 LightHalos = false;

12 HaloSize = 10.0f;

13 UseFog = false;

15 memset(lights, 0, 8 * sizeof(Light*));

17 AmbientLight = Color(0.0f, 0.0f, 0.0f);

18 ManageData = true;

19 }

21 Scene::~Scene() {

23 if(ManageData) {

24 std::list<Object*>::iterator obj = objects.begin();

25 while(obj != objects.end()) {

26 delete *obj++;

27 }

29 std::list<Camera*>::iterator cam = cameras.begin();

30 while(cam != cameras.end()) {

31 delete *cam++;

32 }

34 for(int i=0; i<8; i++) {

35 delete lights[i];

36 }

38 std::list<Curve*>::iterator citer = curves.begin();

39 while(citer != curves.end()) {

40 delete *citer++;

41 }

43 std::list<ShadowVolume>::iterator sv = StaticShadowVolumes.begin();

44 while(sv != StaticShadowVolumes.end()) {

45 delete (*sv++).shadow_mesh;

46 }

47 }

49 }

51 void Scene::SetGraphicsContext(GraphicsContext *gc) {

52 this->gc = gc;

53 }

55 void Scene::AddCamera(Camera *cam) {

56 cameras.push_back(cam);

57 if(!ActiveCamera) ActiveCamera = cam;

58 }

60 void Scene::AddLight(Light *light) {

61 for(int i=0; i<8; i++) {

62 if(!lights[i]) {

63 lights[i] = light;

64 break;

65 }

66 }

67 }

69 void Scene::AddObject(Object *obj) {

70 if(obj->material.Alpha < 1.0f) {

71 objects.push_back(obj);

72 } else {

73 objects.push_front(obj);

74 }

75 }

77 void Scene::AddStaticShadowVolume(TriMesh *mesh, const Light *light) {

78 ShadowVolume svol;

79 svol.shadow_mesh = mesh;

80 svol.light = light;

81 StaticShadowVolumes.push_back(svol);

82 }

84 void Scene::AddCurve(Curve *curve) {

85 curves.push_back(curve);

86 }

89 void Scene::RemoveObject(const Object *obj) {

90 std::list<Object *>::iterator iter = objects.begin();

91 while(iter != objects.end()) {

92 if(obj == *iter) {

93 objects.erase(iter);

94 return;

95 }

96 iter++;

97 }

98 }

100 void Scene::RemoveLight(const Light *light) {

101 for(int i=0; i<8; i++) {

102 if(light = lights[i]) {

103 lights[i] = 0;

104 return;

105 }

106 }

107 }

108

109

110 Camera *Scene::GetCamera(const char *name) {

111 std::list<Camera *>::iterator iter = cameras.begin();

112 while(iter != cameras.end()) {

113 if(!strcmp((*iter)->name.c_str(), name)) return *iter;

114 iter++;

115 }

116 return 0;

117 }

118

119 Light *Scene::GetLight(const char *name) {

120 for(int i=0; i<8; i++) {

121 if(!strcmp(lights[i]->name.c_str(), name)) return lights[i];

122 }

123 return 0;

124 }

125

126 Object *Scene::GetObject(const char *name) {

127 std::list<Object *>::iterator iter = objects.begin();

128 while(iter != objects.end()) {

129 if(!strcmp((*iter)->name.c_str(), name)) return *iter;

130 iter++;

131 }

132 return 0;

133 }

134

135 Curve *Scene::GetCurve(const char *name) {

136 std::list<Curve *>::iterator iter = curves.begin();

137 while(iter != curves.end()) {

138 if(!strcmp((*iter)->name.c_str(), name)) return *iter;

139 iter++;

140 }

141 return 0;

142 }

143

144

145 std::list<Object*> *Scene::GetObjectsList() {

146 return &objects;

147 }

148

149

150 void Scene::SetActiveCamera(Camera *cam) {

151 ActiveCamera = cam;

152 }

153

154 Camera *Scene::GetActiveCamera() const {

155 return ActiveCamera;

156 }

157

158 void Scene::SetShadows(bool enable) {

159 Shadows = enable;

160 }

161

162 void Scene::SetHaloDrawing(bool enable) {

163 LightHalos = enable;

164 }

165

166 void Scene::SetHaloSize(float size) {

167 HaloSize = size;

168 }

169

170 void Scene::SetAmbientLight(Color ambient) {

171 AmbientLight = ambient;

172 }

173

174 Color Scene::GetAmbientLight() const {

175 return AmbientLight;

176 }

177

178 void Scene::SetFog(bool enable, Color FogColor, float Near, float Far) {

179 UseFog = enable;

180 if(enable) {

181 this->FogColor = FogColor;

182 NearFogRange = Near;

183 FarFogRange = Far;

184 }

185 }

186

187

188 void Scene::SetupLights() const {

189 int LightIndex = 0;

190 for(int i=0; i<8; i++) {

191 if(lights[i]) {

192 lights[i]->SetLight(LightIndex++, gc);

193 }

194 }

195 gc->D3DDevice->LightEnable(LightIndex, false);

196 }

197

198

199 void Scene::RenderShadows() const {

200

201 for(int i=0, slight=0; i<8; i++) {

202 if(!lights[i] || !lights[i]->GetShadowCasting()) continue;

203

204 // disable shadow casting light and render the scene (first pass)

205 gc->SetAlphaBlending(true);

206 gc->D3DDevice->LightEnable(i, false);

207 std::list<Object*>::const_iterator iter = objects.begin();

208 while(iter != objects.end()) {

209 Object *obj = *iter++;

210 obj->Render();

211 }

212 gc->D3DDevice->LightEnable(i, true);

213 gc->SetAlphaBlending(false);

214

215 // shadow volume front faces

216 gc->SetZWrite(false);

217 gc->SetColorWrite(false, false, false, false);

218 gc->SetLighting(false);

219

220 gc->SetStencilBuffering(true);

221 gc->SetStencilFunc(CMP_ALWAYS);

222 gc->SetStencilOp(SOP_KEEP, SOP_KEEP, SOP_INC);

223

224 iter = objects.begin();

225 while(iter != objects.end()) {

226 Object *obj = *iter++;

227 TriMesh *mesh = obj->GetShadowVolume(slight);

228 if(mesh) {

229 gc->SetWorldMatrix(obj->GetWorldTransform());

230 gc->Draw(const_cast<Vertex*>(mesh->GetVertexArray()), mesh->GetVertexCount());

231

232 // back faces pass

233 //gc->SetFrontFace(CounterClockwise);

234 //gc->SetStencilOp(SOP_KEEP, SOP_KEEP, SOP_DEC);

235

236 //gc->Draw(const_cast<Vertex*>(mesh->GetVertexArray()), mesh->GetVertexCount());

237 }

238 }

239

240 // static shadow volumes

241 gc->SetWorldMatrix(Matrix4x4());

242 std::list<ShadowVolume>::const_iterator shadow_iter = StaticShadowVolumes.begin();

243 while(shadow_iter != StaticShadowVolumes.end()) {

244 if(shadow_iter->light == lights[i]) {

245 gc->Draw(const_cast<Vertex*>(shadow_iter->shadow_mesh->GetVertexArray()), shadow_iter->shadow_mesh->GetVertexCount());

246 }

247 shadow_iter++;

248 }

249

250 // back faces pass

251 gc->SetFrontFace(CounterClockwise);

252 gc->SetStencilOp(SOP_KEEP, SOP_KEEP, SOP_DEC);

253

254 iter = objects.begin();

255 while(iter != objects.end()) {

256 Object *obj = *iter++;

257 TriMesh *mesh = obj->GetShadowVolume(slight);

258 if(mesh) {

259 gc->SetWorldMatrix(obj->GetWorldTransform());

260 gc->Draw(const_cast<Vertex*>(mesh->GetVertexArray()), mesh->GetVertexCount());

261 }

262 }

263

264 // static shadow volumes

265 gc->SetWorldMatrix(Matrix4x4());

266 shadow_iter = StaticShadowVolumes.begin();

267 while(shadow_iter != StaticShadowVolumes.end()) {

268 if(shadow_iter->light == lights[i]) {

269 gc->Draw(const_cast<Vertex*>(shadow_iter->shadow_mesh->GetVertexArray()), shadow_iter->shadow_mesh->GetVertexCount());

270 }

271 shadow_iter++;

272 }

273

274 gc->SetFrontFace(Clockwise);

275

276 gc->SetLighting(true);

277 gc->SetZWrite(true);

278 gc->SetColorWrite(true, true, true, true);

279

280 gc->SetStencilOp(SOP_KEEP, SOP_KEEP, SOP_KEEP);

281 gc->SetStencilFunc(CMP_EQUAL);

282 gc->SetStencilReference(0);

283

284 gc->SetLighting(true);

285 //SetupLights();

286

287 slight++;

288 }

289 }

290

291 void Scene::Render() const {

292 gc->SetAmbientLight(AmbientLight);

293

294 // set camera

295 if(!ActiveCamera) return;

296 ActiveCamera->CreateCameraMatrix();

297 gc->SetViewMatrix(ActiveCamera->GetCameraMatrix());

298

299 // set projection matrix

300 float NearClip, FarClip;

301 Matrix4x4 ProjMat;

302 ActiveCamera->GetClippingPlanes(&NearClip, &FarClip);

303 CreateProjectionMatrix(&ProjMat, ActiveCamera->GetFOV(), 1.3333333f, NearClip, FarClip);

304 gc->SetProjectionMatrix(ProjMat);

305

306 SetupLights();

307

308 // render shadows

309 if(Shadows) {

310

311 // make array of shadow-casting lights

312 Light *ShadowCasters[8];

313 Light **lptr = ShadowCasters;

314 for(int i=0; i<8; i++) {

315 if(lights[i] && lights[i]->GetShadowCasting()) {

316 *lptr++ = lights[i];

317 }

318 }

319 int ShadowCasterCount = (int)(lptr - ShadowCasters);

320

321 std::list<Object *>::const_iterator iter = objects.begin();

322 while(iter != objects.end()) {

323 Object *obj = *iter++;

324

325 if(obj->GetShadowCasting()) {

326 obj->CalculateShadows((const Light**)ShadowCasters, ShadowCasterCount);

327 }

328 }

329

330 RenderShadows();

331 }

332

333 // render objects

334 std::list<Object *>::const_iterator iter = objects.begin();

335 while(iter != objects.end()) {

336 Object *obj = *iter++;

337

338 obj->Render();

339 }

340

341 if(Shadows) {

342 gc->SetStencilBuffering(false);

343 gc->SetStencilFunc(CMP_ALWAYS);

344 }

345

346 if(LightHalos) {

347 for(int i=0; i<8; i++) {

348 if(lights[i]) lights[i]->Draw(gc, HaloSize);

349 }

350 }

351 }