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/* RCSid $Id: RtraceSimulManager.h,v 2.14 2024/09/16 19:18:32 greg Exp $ */ |
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/* |
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* RtraceSimulManager.h |
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* |
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* Rtrace simulation manager class declaration (along with base class) |
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* Enqueuing rays will block caller iff #rays >= ThreadsAvail() |
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* Reporting call-backs made from EnqueBundle() and FlushQueue() |
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* |
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* Created by Greg Ward on 11/10/22. |
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*/ |
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|
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#ifndef RtraceSimulManager_h |
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#define RtraceSimulManager_h |
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|
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#include "ray.h" |
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#include "abitmap.h" |
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|
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extern char * octname; // global octree name |
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|
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extern int castonly; // doing ray-casting only? |
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|
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/// Ray reporting callback method -- returns # successfully reported, -1 to abort |
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typedef int RayReportCall(RAY *r, void *cd); |
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|
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/// Multi-threaded simulation manager base class |
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class RadSimulManager { |
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char * header; // header (less intro and format) |
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int hlen; // header string length |
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protected: |
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// Assign ray to subthread (fails if NThreads()<2) |
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bool SplitRay(RAY *r); |
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public: |
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RadSimulManager(const char *octn = NULL) { |
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header = NULL; hlen = 0; |
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LoadOctree(octn); |
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} |
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~RadSimulManager() { |
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Cleanup(); |
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} |
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/// Load octree and prepare renderer |
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bool LoadOctree(const char *octn); |
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/// Prepare header from previous input (or clear) |
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/// Normally called during octree load |
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bool NewHeader(const char *inspec = NULL); |
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/// Add a line to header (adds newline if none) |
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bool AddHeader(const char *str); |
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/// Append program line to header |
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bool AddHeader(int ac, char *av[]); |
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/// Get header lines or empty string |
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const char * GetHeadStr() const { |
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return hlen ? header : ""; |
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} |
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/// Look for specific header keyword, return value |
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const char * GetHeadStr(const char *key, bool inOK = false) const; |
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/// How many cores are available? |
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static int GetNCores(); |
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/// Set number of computation threads (0 => #cores) |
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int SetThreadCount(int nt = 0); |
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/// Check thread count (1 means no multi-threading) |
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int NThreads() const { |
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return ray_pnprocs + !ray_pnprocs; |
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} |
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/// How many threads are currently unoccupied? |
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int ThreadsAvailable() const; |
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/// Are we ready? |
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bool Ready() const { |
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return (octname && nobjects > 0); |
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} |
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/// Process a ray (in subthread), optional result |
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bool ProcessRay(RAY *r); |
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/// Wait for next result (or fail) |
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bool WaitResult(RAY *r); |
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/// Close octree, free data, return status |
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int Cleanup(bool everything = false); |
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}; |
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|
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/// Flags to control rendering operations |
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enum {RTdoFIFO=1, RTtraceSources=2, RTlimDist=4, RTimmIrrad=8, RTmask=15}; |
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|
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/// rtrace-like simulation manager (at most one such object) |
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class RtraceSimulManager : public RadSimulManager { |
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RayReportCall * cookedCall; // callback for cooked primary rays |
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void * ccData; // client data for cooked primary rays |
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RayReportCall * traceCall; // call for every ray in tree |
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void * tcData; // client data for traced rays |
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int curFlags; // current operating flags |
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ABitMap srcFollowed; // source flags changed |
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// Call-back for global ray-tracing context |
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static void RTracer(RAY *r); |
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// Call-back for FIFO |
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static int Rfifout(RAY *r); |
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// Check for changes to render flags, etc. |
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bool UpdateMode(); |
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protected: |
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RNUMBER lastRayID; // last ray ID assigned |
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public: |
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int rtFlags; // operation (RT*) flags |
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RtraceSimulManager(RayReportCall *cb = NULL, void *cd = NULL, |
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const char *octn = NULL) : RadSimulManager(octn) { |
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lastRayID = 0; |
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rtFlags = curFlags = 0; |
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SetCookedCall(cb, cd); |
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traceCall = NULL; tcData = NULL; |
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} |
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~RtraceSimulManager() { |
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FlushQueue(); |
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} |
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/// Set number of computation threads (0 => #cores) |
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int SetThreadCount(int nt = 0) { |
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if (nt <= 0) nt = castonly ? 1 : GetNCores(); |
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if (nt == NThreads()) return nt; |
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if (nt < NThreads() && FlushQueue() < 0) return 0; |
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return RadSimulManager::SetThreadCount(nt); |
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} |
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/// Add ray bundle to queue w/ optional 1st ray ID |
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int EnqueueBundle(const FVECT orig_direc[], int n, |
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RNUMBER rID0 = 0); |
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/// Enqueue a single ray w/ optional ray ID |
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bool EnqueueRay(const FVECT org, const FVECT dir, |
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RNUMBER rID = 0) { |
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if (dir == org+1) |
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return(EnqueueBundle((const FVECT *)org, 1, rID) > 0); |
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FVECT orgdir[2]; |
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VCOPY(orgdir[0], org); VCOPY(orgdir[1], dir); |
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return(EnqueueBundle(orgdir, 1, rID) > 0); |
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} |
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/// Set/change cooked ray callback |
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void SetCookedCall(RayReportCall *cb, void *cd = NULL) { |
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if (cookedCall && (cookedCall != cb) | (ccData != cd)) |
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FlushQueue(); |
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cookedCall = cb; |
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ccData = cb ? cd : NULL; |
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} |
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/// Set/change trace callback (before threading) |
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void SetTraceCall(RayReportCall *cb, void *cd = NULL) { |
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traceCall = cb; |
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tcData = cb ? cd : NULL; |
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} |
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/// Are we ready? |
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bool Ready() const { |
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return (cookedCall != NULL) | (traceCall != NULL) && |
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RadSimulManager::Ready(); |
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} |
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/// Finish pending rays and complete callbacks (return #sent) |
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int FlushQueue(); |
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/// Close octree, free data, return status |
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int Cleanup(bool everything = false) { |
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SetCookedCall(NULL); |
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SetTraceCall(NULL); |
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rtFlags = 0; |
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UpdateMode(); |
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lastRayID = 0; |
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return RadSimulManager::Cleanup(everything); |
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} |
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}; |
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|
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/// Determine if vector is all zeroes |
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inline bool |
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IsZeroVec(const FVECT vec) |
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{ |
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return (vec[0] == 0.0) & (vec[1] == 0.0) & (vec[2] == 0.0); |
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} |
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|
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#endif /* RtraceSimulManager_h */ |
