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Correct issue in AABB algorithm

main
Brett 2022-11-16 13:46:07 -05:00
parent 711ddeef17
commit 84b5f4f57b
11 changed files with 102 additions and 92 deletions
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@ -1,3 +1,3 @@
Start testing: Nov 15 21:49 EST
Start testing: Nov 16 13:45 EST
----------------------------------------------------------
End testing: Nov 15 21:49 EST
End testing: Nov 16 13:45 EST

6
Step 3/cmake-build-release/imgui.ini
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@ -9,7 +9,7 @@ Size=550,680
Collapsed=1
[Window][Debug Menu]
Pos=45,46
Pos=47,47
Size=339,226
Collapsed=0
@ -74,8 +74,8 @@ Size=324,211
Collapsed=0
[Window][BVH Data ]
Pos=1221,308
Size=522,476
Pos=1080,448
Size=522,762
Collapsed=0
[Window][Example: Long text display]

49
Step 3/include/engine/math/bvh.h
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@ -70,6 +70,7 @@ namespace Raytracing {
}
BVHHitData doesRayIntersect(const Ray& r, PRECISION_TYPE min, PRECISION_TYPE max){
auto ourHitData = aabb.intersects(r, min, max);
tlog << "Does " << index << " hit? " << ourHitData.hit << "\n";
if (!ourHitData.hit)
return {this, ourHitData, false};
@ -78,20 +79,24 @@ namespace Raytracing {
BVHHitData leftHit{};
BVHHitData rightHit{};
if (left != nullptr)
leftHit = left->doesRayIntersect(r, min, ourHitData.tMax);
leftHit = left->doesRayIntersect(r, min, max);
if (right != nullptr)
rightHit = right->doesRayIntersect(r, min, leftHit.hit ? leftHit.data.tMax : ourHitData.tMax);
rightHit = right->doesRayIntersect(r, min, max);
if (leftHit.data.tMax < rightHit.data.tMax)
if (leftHit.hit && leftHit.data.tMax < rightHit.data.tMax)
return leftHit;
else if (rightHit.data.tMax > leftHit.data.tMax)
else if (rightHit.hit && rightHit.data.tMax > leftHit.data.tMax)
return rightHit;
return {this, ourHitData, true};;
tlog << index << "I " << leftHit.hit << " ? " << rightHit.hit << " " << left << " " << right << " : " << objs.size() << " is empty? " << objs.empty() << "\n" ;
this->hit = !objs.empty();
return {this, ourHitData, !objs.empty()};
}
#ifdef COMPILE_GUI
void draw(Shader& worldShader) {
worldShader.setVec3("color", {1.0, 1.0, 1.0});
if (selected == index || hit) {
aabbVAO->bind();
if (selected == index) {
if (selected == index && ImGui::BeginListBox("", ImVec2(250, 350))) {
std::stringstream strs;
strs << aabb;
@ -106,30 +111,32 @@ namespace Raytracing {
ImGui::EndListBox();
}
aabbVAO->bind();
for (const auto& obj: objs) {
auto transform = getTransform(obj.aabb);
worldShader.setMatrix("transform", transform);
aabbVAO->draw(worldShader);
}
if (hit == 1)
worldShader.setVec3("color", {0.0, 0.0, 1.0});
else if (hit == 2)
worldShader.setVec3("color", {0.0, 1.0, 0.0});
else if (hit == 0)
worldShader.setVec3("color", {1.0, 1.0, 1.0});
else
worldShader.setVec3("color", {1.0, 0.5, 0.5});
auto transform = getTransform(aabb);
worldShader.setMatrix("transform", transform);
aabbVAO->draw(worldShader);
auto splitAABBs = aabb.splitByLongestAxis();
/*auto splitAABBs = aabb.splitByLongestAxis();
transform = getTransform(splitAABBs.second);
worldShader.setMatrix("transform", transform);
aabbVAO->draw(worldShader);
transform = getTransform(splitAABBs.first);
worldShader.setMatrix("transform", transform);
aabbVAO->draw(worldShader);*/
}
if (hit){
if (hit == 1)
worldShader.setVec3("color", {0.0, 0.0, 1.0});
else if (hit == 2)
worldShader.setVec3("color", {0.0, 1.0, 0.0});
else
worldShader.setVec3("color", {1.0, 0.5, 0.5});
auto transform = getTransform(aabb);
worldShader.setMatrix("transform", transform);
aabbVAO->draw(worldShader);
}
}
@ -215,7 +222,10 @@ namespace Raytracing {
if (!partitionedObjs.right.empty())
right = addObjectsRecur(partitionedObjs.right, partitionedObjs);
return new BVHNode(objects, world, left, right);
if (left == nullptr && right == nullptr)
return new BVHNode(objects, world, left, right);
else
return new BVHNode({}, world, left, right);
}
#ifdef COMPILE_GUI
void drawNodesRecur(Shader& worldShader, BVHNode* node) {
@ -277,10 +287,9 @@ namespace Raytracing {
RTAssert(root != nullptr);
auto results = root->doesRayIntersect(ray, min, max);
RTAssert(results.ptr != nullptr);
if (results.hit) {
results.ptr->hit = 1;
if (results.hit)
return results.ptr->objs;
}else
else
return {};
}
void resetNodes(){

6
Step 3/src/engine/math/colliders.cpp
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@ -84,8 +84,8 @@ namespace Raytracing {
PRECISION_TYPE tx1 = (min.x() - ray.getStartingPoint().x())*ray.getInverseDirection().x();
PRECISION_TYPE tx2 = (max.x() - ray.getStartingPoint().x())*ray.getInverseDirection().x();
tmin = std::min(tmin, std::min(tx1, tx2));
tmax = std::max(tmax, std::max(tx1, tx2));
tmin = std::max(tmin, std::min(tx1, tx2));
tmax = std::min(tmax, std::max(tx1, tx2));
PRECISION_TYPE ty1 = (min.y() - ray.getStartingPoint().y())*ray.getInverseDirection().y();
PRECISION_TYPE ty2 = (max.y() - ray.getStartingPoint().y())*ray.getInverseDirection().y();
@ -102,7 +102,7 @@ namespace Raytracing {
tmin = std::max(tmin, 0.0);
// TODO: nans?
//tlog << "TMin: " << tmin << " TMax: " << tmax << " Case: " << (tmax > tmin) << "\n";
tlog << "TMin: " << tmin << " TMax: " << tmax << " Case: " << (tmax > tmin) << "\n";
AABBHitData data{};
data.hit = tmax > tmin;
data.tMin = tmin;