mirror of
https://github.com/devZoGok/vb01.git
synced 2026-08-26 19:43:30 +00:00
311 lines
7.8 KiB
C++
Executable File
311 lines
7.8 KiB
C++
Executable File
#include"root.h"
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#include"node.h"
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#include"mesh.h"
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#include"particleEmitter.h"
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#include"light.h"
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#include"text.h"
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#include"material.h"
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#include"matrix.h"
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#include<glm.hpp>
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#include<glm/gtc/matrix_inverse.hpp>
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using namespace std;
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using namespace glm;
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namespace vb01{
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Node::Node(Vector3 pos, Quaternion orientation, Vector3 scale,string name){
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this->pos=pos;
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this->scale=scale;
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this->orientation=orientation;
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this->name=name;
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globalAxis[0]=Vector3::VEC_I;
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globalAxis[1]=Vector3::VEC_J;
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globalAxis[2]=Vector3::VEC_K;
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}
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Node::~Node(){
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for(Mesh *m : meshes)
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delete m;
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for(Light *l : lights)
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delete l;
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for(ParticleEmitter *p : emitters)
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delete p;
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for(Text *t : texts)
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delete t;
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for(Node *c : children){
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//dettachChild(c);
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delete c;
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}
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}
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void Node::update(){
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if(visible){
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for(Light *l : lights)
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l->update();
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for(Mesh *m : meshes)
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m->update();
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for(Text *t : texts)
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t->update();
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for(Node *c : children)
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c->update();
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for(ParticleEmitter *p : emitters)
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p->update();
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}
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}
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void Node::attachChild(Node *child){
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child->setParent(this);
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children.push_back(child);
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child->updateAxis();
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}
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void Node::dettachChild(Node *child){
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child->setParent(nullptr);
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int id=-1;
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for(int i=0;i<children.size();i++)
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if(children[i]==child){
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id=i;
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break;
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}
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if(id!=-1)
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children.erase(children.begin()+id);
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}
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void Node::attachMesh(Mesh *mesh){
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meshes.push_back(mesh);
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mesh->setNode(this);
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}
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void Node::attachParticleEmitter(ParticleEmitter *emitter){
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emitters.push_back(emitter);
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emitter->setNode(this);
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}
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void Node::addLight(Light *light){
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Root::getSingleton()->numLights++;
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lights.push_back(light);
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light->setNode(this);
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updateShaders();
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}
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void Node::removeLight(int id){
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Root::getSingleton()->numLights--;
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Light *light=lights[id];
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light->setNode(nullptr);
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lights.erase(lights.begin()+id);
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updateShaders();
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}
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void Node::addText(Text *text){
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texts.push_back(text);
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text->setNode(this);
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}
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void Node::lookAt(Vector3 newDir, Vector3 newUp, Node *node){
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adjustDir(newDir, node);
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adjustUp(newUp, node);
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}
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void Node::lookAt(Vector3 newDir, Node *node){
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adjustDir(newDir, node);
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}
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void Node::adjustDir(Vector3 newDir, Node *node){
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Vector3 parAxis[]{
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node->getGlobalAxis(0),
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node->getGlobalAxis(1),
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node->getGlobalAxis(2)
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};
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newDir=(parAxis[0]*newDir.x+parAxis[1]*newDir.y+parAxis[2]*newDir.z).norm();
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float angle=globalAxis[2].getAngleBetween(newDir);
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Vector3 rotAxis=globalAxis[2].cross(newDir).norm();
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if(rotAxis==Vector3::VEC_ZERO)
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rotAxis=globalAxis[1];
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Quaternion oldRot = node->localToGlobalOrientation(orientation);
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Quaternion newRot = node->globalToLocalOrientation(Quaternion(angle,rotAxis));
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setOrientation(newRot*oldRot);
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}
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void Node::adjustUp(Vector3 newUp, Node *node){
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Vector3 parAxis[]{
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node->getGlobalAxis(0),
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node->getGlobalAxis(1),
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node->getGlobalAxis(2)
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};
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newUp=(parAxis[0]*newUp.x+parAxis[1]*newUp.y+parAxis[2]*newUp.z).norm();
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mat3 mat;
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mat[0][0]=globalAxis[0].x;
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mat[1][0]=globalAxis[0].y;
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mat[2][0]=globalAxis[0].z;
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mat[0][1]=globalAxis[1].x;
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mat[1][1]=globalAxis[1].y;
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mat[2][1]=globalAxis[1].z;
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mat[0][2]=globalAxis[2].x;
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mat[1][2]=globalAxis[2].y;
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mat[2][2]=globalAxis[2].z;
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mat=inverse(mat);
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vec3 nu=vec3(newUp.x,newUp.y,newUp.z)*mat;
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newUp=(globalAxis[0]*nu.x+globalAxis[1]*nu.y).norm();
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float angle=globalAxis[1].getAngleBetween(newUp);
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Quaternion oldRot = node->localToGlobalOrientation(orientation);
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Quaternion newRot = node->globalToLocalOrientation(Quaternion(angle*(nu.x<0?1:-1),globalAxis[2]));
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setOrientation(newRot*oldRot);
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}
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void Node::getDescendants(Node *node, vector<Node*> &descendants){
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for(int i=0;i<node->getNumChildren();i++){
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if(node->getChild(i)->getNumChildren()>0)
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getDescendants(node->getChild(i),descendants);
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else
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descendants.push_back(node->getChild(i));
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}
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}
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vector<Node*> Node::getAncestors(Node *node, Node *topAncestor){
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vector<Node*> ancestors;
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Node *parent = node;
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if(!topAncestor)
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topAncestor = Root::getSingleton()->getRootNode();
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while(parent){
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ancestors.push_back(parent);
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if(parent == topAncestor)
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break;
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parent = parent->getParent();
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}
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return ancestors;
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}
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void Node::updateAxis(){
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Vector3 parGlobalAxis[3]{
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parent->getGlobalAxis(0),
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parent->getGlobalAxis(1),
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parent->getGlobalAxis(2)
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};
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float rotAngle = orientation.getAngle();
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Vector3 rotAxis = orientation.getAxis();
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Vector3 newAxis = (parGlobalAxis[0] * rotAxis.x + parGlobalAxis[1] * rotAxis.y + parGlobalAxis[2] * rotAxis.z).norm();
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Quaternion rotQuat=Quaternion(rotAngle,newAxis);
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for(int i = 0; i < 3; i++)
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globalAxis[i] = (rotQuat * parGlobalAxis[i]).norm();
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for(Node *ch : children)
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ch->updateAxis();
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}
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Vector3 Node::localToGlobalPosition(Vector3 localPos){
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vector<Node*> ancestors = getAncestors(this);
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Vector3 origin = Vector3::VEC_ZERO;
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while(!ancestors.empty()){
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int id=ancestors.size()-1;
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Node *par=ancestors[id]->getParent();
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Vector3 parAxis[]={
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par?par->getGlobalAxis(0):Vector3::VEC_I,
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par?par->getGlobalAxis(1):Vector3::VEC_J,
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par?par->getGlobalAxis(2):Vector3::VEC_K
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};
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Vector3 p=ancestors[id]->getPosition();
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origin=origin+parAxis[0]*p.x+parAxis[1]*p.y+parAxis[2]*p.z;
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ancestors.pop_back();
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}
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return origin + globalAxis[0] * localPos.x + globalAxis[1] * localPos.y + globalAxis[2] * localPos.z;
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}
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Vector3 Node::globalToLocalPosition(Vector3 globalPos){
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mat3 mat;
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mat[0][0]=globalAxis[0].x;
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mat[1][0]=globalAxis[0].y;
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mat[2][0]=globalAxis[0].z;
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mat[0][1]=globalAxis[1].x;
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mat[1][1]=globalAxis[1].y;
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mat[2][1]=globalAxis[1].z;
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mat[0][2]=globalAxis[2].x;
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mat[1][2]=globalAxis[2].y;
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mat[2][2]=globalAxis[2].z;
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mat=inverse(mat);
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vec3 local = vec3(globalPos.x, globalPos.y, globalPos.z) * mat;
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return Vector3(local.x, local.y, local.z);
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}
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Quaternion Node::adjustRot(vector<Node*> ancestors, Quaternion adjustableRot, bool localToGlobal){
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Quaternion rOrigin = localToGlobal ? Quaternion::QUAT_W : adjustableRot;
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while(!ancestors.empty()){
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int id = ancestors.size() - 1;
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Vector3 parAxis[]{
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ancestors[id]->getGlobalAxis(0),
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ancestors[id]->getGlobalAxis(1),
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ancestors[id]->getGlobalAxis(2)
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};
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float angle = ancestors[id]->getOrientation().getAngle();
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Vector3 axis = ancestors[id]->getOrientation().getAxis();
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Vector3 rotAxis = (parAxis[0] * axis.x + parAxis[1] * axis.y + parAxis[2] * axis.z).norm();
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Quaternion o;
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if(localToGlobal){
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o = Quaternion(angle, rotAxis);
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rOrigin = o * rOrigin;
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}
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else{
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o = Quaternion(-angle, rotAxis);
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rOrigin = rOrigin * o;
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}
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ancestors.pop_back();
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}
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return rOrigin;
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}
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Quaternion Node::localToGlobalOrientation(Quaternion localRot){
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vector<Node*> ancestors = getAncestors(this);
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Quaternion origin = adjustRot(ancestors, Quaternion::QUAT_W, true);
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return localRot * origin;
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}
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Quaternion Node::globalToLocalOrientation(Quaternion globalRot){
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vector<Node*> ancestors = getAncestors(this);
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Quaternion origin = adjustRot(ancestors, globalRot, false);
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return origin;
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}
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void Node::updateShaders(){
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Root *root=Root::getSingleton();
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Node *rootNode=Root::getSingleton()->getRootNode();
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vector<Node*> descendants;
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rootNode->getDescendants(rootNode,descendants);
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descendants.push_back(rootNode);
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for(Node *n : descendants){
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vector<Mesh*> meshes=n->getMeshes();
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for(Mesh *m : meshes){
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Material *mat=m->getMaterial();
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string str="const int numLights="+to_string(root->numLights>0?root->numLights:1)+";";
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if(mat){
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//mat->getShader()->editShader(true,'=',';',str);
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mat->getShader()->editShader(Shader::FRAGMENT_SHADER,1,str);
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}
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}
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}
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}
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void Node::setOrientation(Quaternion q){
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this->orientation=q;
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updateAxis();
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}
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}
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