add pview

panda/src/testbed/pview.cxx

@@ -0,0 +1,195 @@
+// Filename: pview.cxx
+// Created by:  drose (25Feb02)
+//
+////////////////////////////////////////////////////////////////////
+//
+// PANDA 3D SOFTWARE
+// Copyright (c) 2001, Disney Enterprises, Inc.  All rights reserved
+//
+// All use of this software is subject to the terms of the Panda 3d
+// Software license.  You should have received a copy of this license
+// along with this source code; you will also find a current copy of
+// the license at http://www.panda3d.org/license.txt .
+//
+// To contact the maintainers of this program write to
+// panda3d@yahoogroups.com .
+//
+////////////////////////////////////////////////////////////////////
+
+#include "graphicsWindow.h"
+#include "graphicsChannel.h"
+#include "graphicsLayer.h"
+#include "graphicsEngine.h"
+#include "graphicsPipe.h"
+#include "interactiveGraphicsPipe.h"
+#include "displayRegion.h"
+#include "camera.h"
+#include "perspectiveLens.h"
+#include "pandaNode.h"
+#include "textureAttrib.h"
+#include "clockObject.h"
+#include "qpgeomNode.h"
+#include "geomTri.h"
+#include "texture.h"
+#include "texturePool.h"
+
+PT(GraphicsPipe)
+make_pipe() {
+  // We use the GraphicsPipe factory to make us a renderable pipe
+  // without knowing exactly what kind of pipes we have available.  We
+  // don't care, so long as we can render to it interactively.
+
+  // This depends on the shared library or libraries (DLL's to you
+  // Windows folks) that have been loaded in at runtime from the
+  // load-display Configrc variable.
+  GraphicsPipe::resolve_modules();
+
+  cerr << "Known pipe types:" << endl;
+  GraphicsPipe::get_factory().write_types(cerr, 2);
+
+  PT(GraphicsPipe) pipe;
+  pipe = GraphicsPipe::get_factory().
+    make_instance(InteractiveGraphicsPipe::get_class_type());
+
+  if (pipe == (GraphicsPipe*)0L) {
+    cerr << "No interactive pipe is available!  Check your Configrc!\n";
+    exit(1);
+  }
+
+  return pipe;
+}
+
+PT(Camera)
+setup_window(GraphicsPipe *pipe, GraphicsEngine *engine) {
+  // Now create a window on that pipe.
+  GraphicsWindow::Properties window_prop;
+  window_prop._xorg = 0;
+  window_prop._yorg = 0;
+  window_prop._xsize = 640;
+  window_prop._ysize = 480;
+  window_prop._title = "Panda Viewer";
+  //  window_prop._fullscreen = true;
+
+  PT(GraphicsWindow) window = pipe->make_window(window_prop);
+  engine->add_window(window);
+
+  // Get the first channel on the window.  This will be the only
+  // channel on non-SGI hardware.
+  PT(GraphicsChannel) channel = window->get_channel(0);
+
+  // Make a layer on the channel to hold our display region.
+  PT(GraphicsLayer) layer = channel->make_layer();
+
+  // And create a display region that covers the entire window.
+  PT(DisplayRegion) dr = layer->make_display_region();
+
+  // Finally, we need a camera to associate with the display region.
+  PT(Camera) camera = new Camera;
+  PT(Lens) lens = new PerspectiveLens;
+  lens->set_film_size(640, 480);
+  camera->set_lens(lens);
+  dr->set_camera(camera);
+
+  return camera;
+}
+
+
+void
+make_default_geometry(PandaNode *parent) {
+  PTA_Vertexf coords;
+  PTA_TexCoordf uvs;
+  PTA_Normalf norms;
+  PTA_Colorf colors;
+  PTA_ushort cindex;
+  
+  coords.push_back(Vertexf::rfu(0.0, 20.0, 0.0));
+  coords.push_back(Vertexf::rfu(1.0, 20.0, 0.0));
+  coords.push_back(Vertexf::rfu(0.0, 20.0, 1.0));
+  uvs.push_back(TexCoordf(0.0, 0.0));
+  uvs.push_back(TexCoordf(1.0, 0.0));
+  uvs.push_back(TexCoordf(0.0, 1.0));
+  norms.push_back(Normalf::back());
+  colors.push_back(Colorf(0.5, 0.5, 1.0, 1.0));
+  cindex.push_back(0);
+  cindex.push_back(0);
+  cindex.push_back(0);
+  
+  PT(GeomTri) geom = new GeomTri;
+  geom->set_num_prims(1);
+  geom->set_coords(coords);
+  geom->set_texcoords(uvs, G_PER_VERTEX);
+  geom->set_normals(norms, G_PER_PRIM);
+  geom->set_colors(colors, G_PER_VERTEX, cindex);
+  
+  qpGeomNode *geomnode = new qpGeomNode("tri");
+  parent->add_child(geomnode);
+  geomnode->add_geom(geom, RenderState::make_empty());
+  
+  Texture *tex = TexturePool::load_texture("rock-floor.rgb");
+  if (tex != (Texture *)NULL) {
+    tex->set_minfilter(Texture::FT_linear);
+    tex->set_magfilter(Texture::FT_linear);
+    geomnode->set_attrib(TextureAttrib::make(tex));
+  }
+}
+
+void
+get_models(PandaNode *parent, int argc, char *argv[]) {
+  make_default_geometry(parent);
+  /*
+  Loader loader;
+
+  for (int i = 1; i < argc; i++) {
+    Filename filename = argv[i];
+
+    cerr << "Loading " << filename << "\n";
+    PT_Node node = loader.load_sync(filename);
+    if (node == (Node *)NULL) {
+      cerr << "Unable to load " << filename << "\n";
+    } else {
+      new RenderRelation(parent, node);
+    }
+  }
+  */
+}
+
+
+int
+main(int argc, char *argv[]) {
+  // First, we need a GraphicsPipe, before we can open a window.
+  PT(GraphicsPipe) pipe = make_pipe();
+
+  // We also need a GraphicsEngine to manage the rendering process.
+  GraphicsEngine *engine = new GraphicsEngine;
+
+  // Now open a window and get a camera.
+  PT(Camera) camera = setup_window(pipe, engine);
+
+  // Now we just need to make a scene graph for the camera to render.
+  PT(PandaNode) render = new PandaNode("render");
+  camera->set_qpscene(render);
+
+  // Put something in the scene graph to look at.
+  get_models(render, argc, argv);
+
+  /*
+  // Put the scene a distance in front of our face so we can see it.
+  LMatrix4f mat = LMatrix4f::translate_mat(0, 20, 0);
+  TransformTransition *tt = new TransformTransition(mat);
+  render_arc->set_transition(tt);
+  */
+
+
+  // This is our main update loop.  Run for 5 seconds, then shut down.
+  ClockObject *clock = ClockObject::get_global_clock();
+  clock->tick();
+  double now = clock->get_frame_time();
+  while (clock->get_frame_time() - now < 5.0) {
+    clock->tick();
+    engine->render_frame();
+  } 
+
+  cerr << "Exiting.\n";
+  delete engine;
+  return (0);
+}