Vec3f QuadParticleSystemDrawer::getQuadNormal(DrawEnv *pEnv, ParticleSystemUnrecPtr System, UInt32 Index)
{
Vec3f Direction;
switch(getNormalSource())
{
case NORMAL_POSITION_CHANGE:
Direction = System->getPositionChange(Index);
Direction.normalize();
break;
case NORMAL_VELOCITY_CHANGE:
Direction = System->getVelocityChange(Index);
Direction.normalize();
break;
case NORMAL_VELOCITY:
Direction = System->getVelocity(Index);
Direction.normalize();
break;
case NORMAL_ACCELERATION:
Direction = System->getAcceleration(Index);
Direction.normalize();
break;
case NORMAL_PARTICLE_NORMAL:
Direction = System->getNormal(Index);
break;
case NORMAL_VIEW_POSITION:
{
//TODO: make this more efficient
Matrix ModelView(pEnv->getCameraViewing());
Pnt3f Position(ModelView[0][3],ModelView[1][3],ModelView[2][3]);
Direction = Position - System->getPosition(Index);
Direction.normalize();
break;
}
case NORMAL_STATIC:
Direction = getNormal();
break;
case NORMAL_VIEW_DIRECTION:
default:
{
Matrix ModelView(pEnv->getCameraViewing());
ModelView.mult(pEnv->getObjectToWorld());
Direction.setValues(ModelView[0][2],ModelView[1][2],ModelView[2][2]);
break;
}
}
return Direction;
}
void DrawTexture::DrawBarrelDistortion(bool leftEye) const {
glBindVertexArray(fVao);
auto shader = Shaders::BarrelDistortion::Make();
shader->EnableProgram();
shader->ConfigureEye(leftEye);
glm::mat4 scale = glm::scale(glm::mat4(1), glm::vec3(2,2,1));
glm::mat4 transl = glm::translate(glm::mat4(1), glm::vec3(-1, -1, 0));
shader->ModelView(transl * scale);
this->DrawBasic();
shader->DisableProgram();
glBindVertexArray(0);
}
Vec3f QuadParticleSystemDrawer::getQuadUpDir(DrawEnv *pEnv, ParticleSystemUnrecPtr System, UInt32 Index)
{
Vec3f Direction;
switch(getUpSource())
{
case UP_POSITION_CHANGE:
Direction = System->getPositionChange(Index);
break;
case UP_VELOCITY_CHANGE:
Direction = System->getVelocityChange(Index);
break;
case UP_VELOCITY:
Direction = System->getVelocity(Index);
break;
case UP_ACCELERATION:
Direction = System->getAcceleration(Index);
break;
case UP_PARTICLE_NORMAL:
Direction = System->getNormal(Index);
break;
case UP_STATIC:
Direction = getUp();
break;
case UP_VIEW_DIRECTION:
default:
{
Matrix ModelView(pEnv->getCameraViewing());
ModelView.mult(pEnv->getObjectToWorld());
Direction.setValues(ModelView[0][1],ModelView[1][1],ModelView[2][1]);
break;
}
}
return Direction;
}
