spot light stuff done except it sucks

Author: benpm

include/app.hpp

@@ -101,6 +101,7 @@ class App
         entt::entity ePlane;
         entt::entity eSelectPoint;
         entt::entity eDragArrow;
+        entt::entity eSpotLight;
 
         Vector3f selectPoint;
         entt::entity eSelected = entt::null;

reports/2023-03-16-22-06-47.png

@@ -3,17 +3,20 @@
 
 ![](2023-03-13-23-29-41.png)
 
+![](2023-03-16-22-06-47.png)
+
 > What you implemented
 
-- Point light shadows
+- Spot light shadows
+- Control spot light orientation with shift + left click
 
 > What you could not implement
 
-WIP
+- There are issues with the spot light shadow projection that I don't understand :(
 
 > Additional functionalities beyond project requirements
 
-WIP
+- Point light shadows (they are implemented but not accessible)
 
 > How to use your implementation
 

reports/project7.md

@@ -158,10 +158,11 @@ void main() {
     // C *= shadow;
     // float shadow = textureProj(uSpotShadowMap, vec4(v.x, v.y, v.z / uFarPlane, v.w));
     // C = vec3(shadow);
-    float shadow = textureProj(uSpotShadowMap, vec4(
+    float shadow = texture(uSpotShadowMap, vec3(
         (v.x / 2.0) / v.w + 0.5,
         (v.y / 2.0) / v.w + 0.5,
-        dist / uFarPlane - 0.005, 1.0));
+        dist / uFarPlane - 0.005));
+    // float shadow = texture(uSpotShadowMap, v.xyz / v.w);
     C *= shadow;
 
     C = mix(C, mat.emissionColor, mat.emissionFactor);

resources/shaders/basic.frag

@@ -306,7 +306,7 @@ App::App(cxxopts::ParseResult& args) {
         this->spotShadowCamera->orbitDist(5.0f);
         this->spotShadowCamera->orbitTheta(tau4);
         this->spotShadowCamera->orbitPhi(0.0f);
-        entt::entity e = this->makeSpotLight(
+        this->eSpotLight = this->makeSpotLight(
             this->spotShadowCamera->pos,
             -direction(this->spotShadowCamera->rot),
             Vector3f(1.0f, 1.0f, 0.9f),
@@ -615,6 +615,7 @@ void App::onClick(int button, bool pressed) {
         case GLFW_MOUSE_BUTTON_LEFT:
             this->mouseLeft = pressed;
             this->camera->dragStart();
+            this->spotShadowCamera->dragStart();
             break;
         case GLFW_MOUSE_BUTTON_RIGHT:
             this->mouseRight = pressed;
@@ -745,7 +746,14 @@ void App::simulate(float dt) {
         dragDelta = panDelta * 2.0f;
         dragDelta.y() *= -1.0f;
     }
-    this->camera->control(-this->mouseDeltaPos * dt * 0.15f, dragDelta, keyboardDelta * dt * 20.0f);
+    if (this->pressedKeys.count(GLFW_KEY_LEFT_SHIFT)) {
+        this->spotShadowCamera->control(-this->mouseDeltaPos * dt * 0.15f, dragDelta, keyboardDelta * dt * 20.0f);
+        Light& spotLight = this->reg.get<Light>(this->eSpotLight);
+        spotLight.pos = this->spotShadowCamera->pos;
+        spotLight.dir = -direction(this->spotShadowCamera->rot);
+    } else {
+        this->camera->control(-this->mouseDeltaPos * dt * 0.15f, dragDelta, keyboardDelta * dt * 20.0f);
+    }
 
     // Physics simulation
     // constexpr float dampingFactor = 0.25f;
@@ -1189,15 +1197,15 @@ entt::entity App::makeSpotLight(const Vector3f& pos, const Vector3f& dir, const
 
     this->reg.emplace<uLight>(e);
 
-    DebugRay& debugRay = this->reg.emplace<DebugRay>(e);
-    debugRay.pos = pos;
-    debugRay.rot = vec3(pointSphere(dir));
+    // DebugRay& debugRay = this->reg.emplace<DebugRay>(e);
+    // debugRay.pos = pos;
+    // debugRay.rot = vec3(pointSphere(dir));
 
-    RayTransform& rayTransform = this->reg.emplace<RayTransform>(e);
-    rayTransform.transform = debugRay.transform();
+    // RayTransform& rayTransform = this->reg.emplace<RayTransform>(e);
+    // rayTransform.transform = debugRay.transform();
 
-    DebugColor& debugColor = this->reg.emplace<DebugColor>(e);
-    debugColor.color = {1.0f, 1.0f, 0.2f, 1.0f};
+    // DebugColor& debugColor = this->reg.emplace<DebugColor>(e);
+    // debugColor.color = {1.0f, 1.0f, 0.2f, 1.0f};
 
     return e;
 }