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Improved debug messages on NavMesh #122

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Merged
sebsjames merged 1 commit into from
Jan 30, 2026
Merged

Improved debug messages on NavMesh #122

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38 changes: 17 additions & 21 deletions mplot/NavMesh.h
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Original file line number Diff line number Diff line change
Expand Up @@ -1026,10 +1026,11 @@ namespace mplot
this->tn0 = this->triangle_normal (tv_sf);

if constexpr (debug_move) {
std::cout << "\n# compute_mesh_movement: ti0 " << this->ti0[0] << "," << this->ti0[1] << "," << this->ti0[2]
<< " has vertices (sf) at " << tv_sf << " and normal " << this->tn0
<< ". upcoming movement (camframe) is " << mv_camframe << std::endl;
std::cout << "Initial camera location (camloc_sf): " << camloc_sf << std::endl;
std::cout << "\n# compute_mesh_movement:\n"
<< "\nti0: " << this->ti0[0] << "," << this->ti0[1] << "," << this->ti0[2]
<< "\nti0 (sf): " << tv_sf << "\nnormal " << this->tn0
<< "\nmovement (camframe): " << mv_camframe
<< "\nInitial camera location (camloc_sf): " << camloc_sf << "\n\n";
}

// Does camloc_sf in dirn tn0 intersect the tv_sf triangle? This
Expand Down Expand Up @@ -1057,11 +1058,9 @@ namespace mplot
std::tie (isect, hov_sf) = sm::geometry::ray_tri_intersection<float, double> (tv_sf[0], tv_sf[1], tv_sf[2], camloc_sf + (this->tn0 / 2.0f), -this->tn0);
if constexpr (debug_move) {
if (isect == false) {
std::cout << "No isect at start with " << this->ti0[0] << "," << this->ti0[1] << "," << this->ti0[2]
<< " using float OR double internally" << std::endl;
std::cout << "No isect at start with ti0 using float OR double internally" << std::endl;
} else {
std::cout << "Intersection at start with " << this->ti0[0] << "," << this->ti0[1] << "," << this->ti0[2]
<< " using *double* internally" << std::endl;
std::cout << "Intersection at start with ti0 using *double* internally" << std::endl;
}
}
}
Expand Down Expand Up @@ -1095,9 +1094,7 @@ namespace mplot
if (isect == false) {

if constexpr (debug_move2) {
std::cout << "No intersection (at start) with triangle "
<< this->ti0[0] << "," << this->ti0[1] << "," << this->ti0[2]
<< ", so correct ti0 and tn0 (if we can)" << std::endl;
std::cout << "No intersection (at start) with triangle ti0, so correct ti0 and tn0 (if we can)" << std::endl;
}

// When very close to the boundary, ray_tri_intersection may fail. This triggers a
Expand All @@ -1119,7 +1116,7 @@ namespace mplot
std::cout << "Start of move " << (is ? "IS" : "is NOT") << " in " << _ti[0] << "," << _ti[1] << "," << _ti[2] << std::endl;
}
if (is) {
if constexpr (debug_move) { std::cout << "*** Correcting!\n"; }
if constexpr (debug_move) { std::cout << "CORRECT ti0 to " << _ti[0] << "," << _ti[1] << "," << _ti[2] << std::endl; }
// We're in this neighbour, so update ti0/tn0 and mark isect true
this->ti0 = _ti;
tv_sf = tv_lf;
Expand All @@ -1136,8 +1133,7 @@ namespace mplot

if (isect == false) {
if constexpr (debug_move2) {
std::cout << "No intersection (at start) with triangle "
<< this->ti0[0] << "," << this->ti0[1] << "," << this->ti0[2] << " OR neighbours" << std::endl;
std::cout << "DBG No intersection (at start) with triangle ti0 OR neighbours" << std::endl;
}

// Final test to see if we're on boundary?
Expand All @@ -1164,9 +1160,7 @@ namespace mplot

} else {
if constexpr (debug_move) {
std::cout << "First ray_tri_intersected. Start of move is IN triangle "
<< this->ti0[0] << "," << this->ti0[1] << "," << this->ti0[2]
<< " from coord " << camloc_sf << " and dirn " << -this->tn0 << std::endl;
std::cout << "First ray_tri_intersected. Start of move is IN triangle ti0\n";
}
}

Expand Down Expand Up @@ -1234,8 +1228,10 @@ namespace mplot
while (!flags.test (cmm_fl::done)) {

if constexpr (debug_move) {
std::cout << "\n* loopstart: Processing mv_inplane: " << hov_sf << "," << mv_inplane << " ti0 = ("
<< this->ti0[0] << "," << this->ti0[1] << "," << this->ti0[2] << ") with tn0 = " << this->tn0 << std::endl;
std::cout << "\nWHILE LOOP\n"
<< "ti0 = (" << this->ti0[0] << "," << this->ti0[1] << "," << this->ti0[2] << ")\n"
<< "mv_inplane: " << hov_sf << "," << mv_inplane << "\n"
<< "tn0 = " << this->tn0 << ")\n";
}

if (mv_inplane.length() == 0) {
Expand Down Expand Up @@ -1296,8 +1292,8 @@ namespace mplot
_tn = this->triangle_normal (newtv_sf);

if constexpr (debug_move) {
std::cout << "Re-orient to new triangle " << _ti[0] << "," << _ti[1] << "," << _ti[2]
<< "[ " << newtv_sf << " ] with normal " << _tn << "\n";
std::cout << "RE-ORIENT to _ti: " << _ti[0] << "," << _ti[1] << "," << _ti[2]
<< "\n " << newtv_sf << "\n normal " << _tn << "\n";
}

// If a vertex crossing, we have to make an edge that is the cross product of the two triangle normals
Expand Down
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