3 types of lights

supported number of n lights

light.cpp

@@ -0,0 +1,66 @@
+#include"light.h"
+#include"node.h"
+#include"root.h"
+#include"material.h"
+#include"mesh.h"
+#include<glm/glm.hpp>
+
+using namespace glm;
+using namespace std;
+
+namespace vb01{
+	Light::Light(){
+	
+	}
+
+	Light::~Light(){}
+
+	void Light::update(){
+		Node *rootNode=Root::getSingleton()->getRootNode();
+		std::vector<Node*> descendants=rootNode->getDescendants();
+		descendants.push_back(rootNode);
+		std::vector<Material*> materials;
+		int numLights=0,thisId=-1;
+		for(Node *n : descendants){
+			std::vector<Light*> lights=n->getLights();
+			if(n->getMesh()){
+				Material *mat=n->getMesh()->getMaterial();
+				if(mat&&mat->isLightingEnabled())
+					materials.push_back(mat);
+			}
+			for(Light *l : lights){
+				if(l){
+					numLights++;
+					if(l==this)
+						thisId=numLights-1;
+				}	
+			}
+		}
+		for(Material *m : materials){
+			Shader *shader=m->getShader();
+			shader->use();
+			shader->setInt((int)type,"light["+to_string(thisId)+"].type");
+			shader->setVec3(vec3(color.x,color.y,color.z),"light["+to_string(thisId)+"].color");
+			switch(type){
+				case POINT:
+					shader->setVec3(vec3(pos.x,pos.y,pos.z),"light["+to_string(thisId)+"].pos");
+					shader->setFloat(attenuationValues.x,"light["+to_string(thisId)+"].a");
+					shader->setFloat(attenuationValues.y,"light["+to_string(thisId)+"].b");
+					shader->setFloat(attenuationValues.z,"light["+to_string(thisId)+"].c");
+					break;
+				case DIRECTIONAL:
+					shader->setVec3(vec3(direction.x,direction.y,direction.z),"light["+to_string(thisId)+"].direction");
+					break;
+				case SPOT:
+					shader->setVec3(vec3(pos.x,pos.y,pos.z),"light["+to_string(thisId)+"].pos");
+					shader->setVec3(vec3(direction.x,direction.y,direction.z),"light["+to_string(thisId)+"].direction");
+					shader->setFloat(attenuationValues.x,"light["+to_string(thisId)+"].a");
+					shader->setFloat(attenuationValues.y,"light["+to_string(thisId)+"].b");
+					shader->setFloat(attenuationValues.z,"light["+to_string(thisId)+"].c");
+					shader->setFloat(innerAngle,"light["+to_string(thisId)+"].innerAngle");
+					shader->setFloat(outerAngle,"light["+to_string(thisId)+"].outerAngle");
+					break;
+			}
+		}
+	}
+}