#include "object_viewer_view.h"
#include "world_view.h"
#include "l3d.h"
#include "frame.h"
#include "player.h"
#include "space.h"

ObjectViewerView::ObjectViewerView(void) : View() {
  SetTransparency(true);
  viewingDist = 1000.0f;

  m_infoLabel = new Gui::Label("");
  Add(m_infoLabel, 2, 2);
}

void ObjectViewerView::Draw3D(void) {
  static float rot;
  rot += 0.1;
  glClearColor(0, 0, 0, 0);
  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
  glMatrixMode(GL_PROJECTION);
  glLoadIdentity();
  float fracH = L3D::GetScrHeight() / (float)L3D::GetScrWidth();
  glFrustum(-1, 1, -fracH, fracH, 1.0f, 10000.0f);
  glMatrixMode(GL_MODELVIEW);
  glLoadIdentity();

  matrix4x4d camRot;
  camRot = matrix4x4d::RotateXMatrix(-DEG2RAD(rot));
  camRot = matrix4x4d::RotateYMatrix(-DEG2RAD(rot)) * camRot;
  vector3d pos = camRot * vector3d(0,0,viewingDist);

  float lightPos[4] = { 1, 1, 1, 0 };
  glLightfv(GL_LIGHT0, GL_POSITION, lightPos);

  Body* body = L3D::player->GetNavTarget();
  if(body) {
    Frame cam_frame(body->GetFrame(), "", Frame::TEMP_VIEWING);
    cam_frame.SetOrientation(camRot);
    cam_frame.SetPosition(body->GetPosition()+pos);
    body->Render(&cam_frame);
    body->GetFrame()->RemoveChild(&cam_frame);
  }
}

void ObjectViewerView::Update(void) {
  if(L3D::KeyState(SDLK_EQUALS))  viewingDist *= 0.99;
  if(L3D::KeyState(SDLK_MINUS))   viewingDist *= 1.01;
  viewingDist = CLAMP(viewingDist, 10, 1e10);

  char buf[128];
  Body* body = L3D::player->GetNavTarget();
  if(body && body != lastTarget) {
    /* Reset view distance for new target. */
    viewingDist = body->GetRadius() * 2.0f;
    lastTarget = body;
  }
  snprintf(buf, sizeof(buf), "View dist: %.2f   Object: %s", viewingDist, (body ? body->GetLabel().c_str() : "<none>"));
  m_infoLabel->SetText(buf);
}