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open_toontown_panda3d/panda/src/framework/windowFramework.cxx

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// Filename: windowFramework.cxx
// Created by: drose (02Apr02)
//
////////////////////////////////////////////////////////////////////
//
// PANDA 3D SOFTWARE
// Copyright (c) 2001 - 2004, 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://etc.cmu.edu/panda3d/docs/license/ .
//
// To contact the maintainers of this program write to
// panda3d-general@lists.sourceforge.net .
//
////////////////////////////////////////////////////////////////////
#include "windowFramework.h"
#include "pandaFramework.h"
#include "displayRegion.h"
#include "buttonThrower.h"
#include "transform2sg.h"
#include "dSearchPath.h"
#include "filename.h"
#include "loader.h"
#include "keyboardButton.h"
#include "geomTri.h"
#include "qpgeom.h"
#include "qpgeomTriangles.h"
#include "qpgeomTristrips.h"
#include "qpgeomVertexData.h"
#include "qpgeomVertexFormat.h"
#include "qpgeomVertexWriter.h"
#include "texturePool.h"
#include "textureAttrib.h"
#include "colorAttrib.h"
#include "perspectiveLens.h"
#include "orthographicLens.h"
#include "auto_bind.h"
#include "ambientLight.h"
#include "directionalLight.h"
#include "lightAttrib.h"
#include "boundingSphere.h"
#include "deg_2_rad.h"
#include "config_framework.h"
#include "depthTestAttrib.h"
#include "depthWriteAttrib.h"
#include "cullFaceAttrib.h"
#include "rescaleNormalAttrib.h"
#include "shadeModelAttrib.h"
#include "pgTop.h"
#include "geomNode.h"
#include "geomTristrip.h"
#include "texture.h"
#include "pnmImage.h"
#include "loaderFileTypeRegistry.h"
#include "pnmFileTypeRegistry.h"
#include "pnmImage.h"
#include "virtualFileSystem.h"
// This is generated data for the standard texture we apply to the
// blue triangle.
#include "rock_floor_src.cxx"
// This number is chosen arbitrarily to override any settings in model
// files.
static const int override_priority = 100;
TypeHandle WindowFramework::_type_handle;
////////////////////////////////////////////////////////////////////
// Function: WindowFramework::Constructor
// Access: Protected
// Description:
////////////////////////////////////////////////////////////////////
WindowFramework::
WindowFramework(PandaFramework *panda_framework) :
_panda_framework(panda_framework)
{
_alight = (AmbientLight *)NULL;
_dlight = (DirectionalLight *)NULL;
_got_keyboard = false;
_got_trackball = false;
_got_lights = false;
_wireframe_enabled = false;
_texture_enabled = true;
_two_sided_enabled = false;
_one_sided_reverse_enabled = false;
_lighting_enabled = false;
_background_type = BT_default;
}
////////////////////////////////////////////////////////////////////
// Function: WindowFramework::Copy Constructor
// Access: Protected
// Description:
////////////////////////////////////////////////////////////////////
WindowFramework::
WindowFramework(const WindowFramework &copy, DisplayRegion *display_region) :
_panda_framework(copy._panda_framework),
_window(copy._window),
_display_region_3d(display_region)
{
_alight = (AmbientLight *)NULL;
_dlight = (DirectionalLight *)NULL;
_got_keyboard = false;
_got_trackball = false;
_got_lights = false;
_wireframe_enabled = false;
_texture_enabled = true;
_two_sided_enabled = false;
_one_sided_reverse_enabled = false;
_lighting_enabled = false;
_background_type = BT_default;
set_background_type(copy._background_type);
// Set up a 3-d camera for the window by default.
make_camera();
}
////////////////////////////////////////////////////////////////////
// Function: WindowFramework::Destructor
// Access: Public, Virtual
// Description:
////////////////////////////////////////////////////////////////////
WindowFramework::
~WindowFramework() {
close_window();
}
////////////////////////////////////////////////////////////////////
// Function: WindowFramework::open_window
// Access: Protected
// Description: Opens the actual window. This is normally called
// only from PandaFramework::open_window().
////////////////////////////////////////////////////////////////////
GraphicsWindow *WindowFramework::
open_window(const WindowProperties &props, GraphicsEngine *engine,
GraphicsPipe *pipe, GraphicsStateGuardian *gsg) {
nassertr(_window == (GraphicsWindow *)NULL, _window);
PT(GraphicsStateGuardian) ptgsg = gsg;
// If we were not given a gsg in the arguments, create a new one
// just for this window.
if (ptgsg == (GraphicsStateGuardian *)NULL) {
ptgsg = engine->make_gsg(pipe);
if (ptgsg == (GraphicsStateGuardian *)NULL) {
// No GSG, no window.
framework_cat.fatal() << "open_window: failed to create gsg object!\n";
return NULL;
}
}
static int next_window_index = 1;
ostringstream stream;
stream << "window" << next_window_index;
next_window_index++;
string name = stream.str();
_window = engine->make_window(ptgsg, name, 0);
if (_window != (GraphicsWindow *)NULL) {
_window->request_properties(props);
// Create a display region that covers the entire window.
_display_region_3d = _window->make_display_region();
// Make sure the DisplayRegion does the clearing, not the window,
// so we can have multiple DisplayRegions of different colors.
_window->set_clear_color_active(false);
_window->set_clear_depth_active(false);
set_background_type(_background_type);
// Set up a 3-d camera for the window by default.
make_camera();
if (show_frame_rate_meter) {
_frame_rate_meter = new FrameRateMeter("frame_rate_meter");
_frame_rate_meter->setup_window(_window);
}
}
return _window;
}
////////////////////////////////////////////////////////////////////
// Function: WindowFramework::close_window
// Access: Protected
// Description: Closes the window. This is normally called
// from PandaFramework::close_window().
////////////////////////////////////////////////////////////////////
void WindowFramework::
close_window() {
_window.clear();
_camera_group.remove_node();
_render.remove_node();
_render_2d.remove_node();
_mouse.remove_node();
_alight = (AmbientLight *)NULL;
_dlight = (DirectionalLight *)NULL;
_got_keyboard = false;
_got_trackball = false;
_got_lights = false;
_wireframe_enabled = false;
_texture_enabled = true;
_two_sided_enabled = false;
_one_sided_reverse_enabled = false;
_lighting_enabled = false;
_frame_rate_meter = (FrameRateMeter *)NULL;
}
////////////////////////////////////////////////////////////////////
// Function: WindowFramework::get_camera_group
// Access: Public
// Description: Returns the node above the collection of 3-d cameras
// in the scene graph. This node may be moved around to
// represent the viewpoint.
////////////////////////////////////////////////////////////////////
const NodePath &WindowFramework::
get_camera_group() {
if (_camera_group.is_empty()) {
_camera_group = get_render().attach_new_node("camera_group");
}
return _camera_group;
}
////////////////////////////////////////////////////////////////////
// Function: WindowFramework::get_render
// Access: Public
// Description: Returns the root of the 3-d scene graph.
////////////////////////////////////////////////////////////////////
const NodePath &WindowFramework::
get_render() {
if (_render.is_empty()) {
_render = NodePath("render");
_render.node()->set_attrib(RescaleNormalAttrib::make_default());
_render.node()->set_attrib(ShadeModelAttrib::make(ShadeModelAttrib::M_smooth));
// This is maybe here temporarily, and maybe not.
_render.set_two_sided(0);
}
return _render;
}
////////////////////////////////////////////////////////////////////
// Function: WindowFramework::get_render_2d
// Access: Public
// Description: Returns the root of the 2-d scene graph.
////////////////////////////////////////////////////////////////////
const NodePath &WindowFramework::
get_render_2d() {
if (_render_2d.is_empty()) {
_render_2d = NodePath("render_2d");
// Some standard properties for the 2-d display.
// It's particularly important to turn off the depth test,
// since we'll be keeping the same depth buffer already filled
// by the previously-drawn 3-d scene--we don't want to pay for
// a clear operation, but we also don't want to collide with
// that depth buffer.
CPT(RenderAttrib) dt = DepthTestAttrib::make(DepthTestAttrib::M_none);
CPT(RenderAttrib) dw = DepthWriteAttrib::make(DepthWriteAttrib::M_off);
_render_2d.node()->set_attrib(dt, 1);
_render_2d.node()->set_attrib(dw, 1);
_render_2d.set_material_off(1);
_render_2d.set_two_sided(1, 1);
// Now set up a 2-d camera to view render_2d.
// Create a display region that matches the size of the 3-d
// display region.
float l, r, b, t;
_display_region_3d->get_dimensions(l, r, b, t);
_display_region_2d = _window->make_display_region(l, r, b, t);
// Finally, we need a camera to associate with the display region.
PT(Camera) camera = new Camera("camera2d");
NodePath camera_np = _render_2d.attach_new_node(camera);
PT(Lens) lens = new OrthographicLens;
static const float left = -1.0f;
static const float right = 1.0f;
static const float bottom = -1.0f;
static const float top = 1.0f;
lens->set_film_size(right - left, top - bottom);
lens->set_film_offset((right + left) * 0.5, (top + bottom) * 0.5);
lens->set_near_far(-1000, 1000);
camera->set_lens(lens);
_display_region_2d->set_camera(camera_np);
}
return _render_2d;
}
////////////////////////////////////////////////////////////////////
// Function: WindowFramework::get_aspect_2d
// Access: Public
// Description: Returns the node under the 2-d scene graph that is
// scaled to suit the window's aspect ratio.
////////////////////////////////////////////////////////////////////
const NodePath &WindowFramework::
get_aspect_2d() {
if (_aspect_2d.is_empty()) {
PGTop *top = new PGTop("aspect_2d");
_aspect_2d = get_render_2d().attach_new_node(top);
// Tell the PGTop about our MouseWatcher object, so the PGui
// system can operate.
PandaNode *mouse_node = get_mouse().node();
if (mouse_node->is_of_type(MouseWatcher::get_class_type())) {
top->set_mouse_watcher(DCAST(MouseWatcher, mouse_node));
}
float this_aspect_ratio = aspect_ratio;
if (this_aspect_ratio == 0.0f) {
// An aspect ratio of 0.0 means to try to infer it.
this_aspect_ratio = 1.0f;
WindowProperties properties = _window->get_properties();
if (!properties.has_size()) {
properties = _window->get_requested_properties();
}
if (properties.has_size() && properties.get_y_size() != 0.0f) {
this_aspect_ratio =
(float)properties.get_x_size() / (float)properties.get_y_size();
}
}
_aspect_2d.set_scale(1.0f / this_aspect_ratio, 1.0f, 1.0f);
}
return _aspect_2d;
}
////////////////////////////////////////////////////////////////////
// Function: WindowFramework::get_mouse
// Access: Public
// Description: Returns the node in the data graph corresponding to
// the mouse associated with this window.
////////////////////////////////////////////////////////////////////
const NodePath &WindowFramework::
get_mouse() {
if (_mouse.is_empty()) {
NodePath mouse = _panda_framework->get_mouse(_window);
// Create a MouseWatcher to filter the mouse input. We do this
// mainly so we can constrain the mouse input to our particular
// display region, if we have one. This means the node we return
// from get_mouse() is actually a MouseWatcher, but since it
// presents the same interface as a Mouse, no one should mind.
// Another advantage to using a MouseWatcher is that it the PGTop
// of aspect2d likes it better.
PT(MouseWatcher) mw = new MouseWatcher("watcher");
mw->set_display_region(_display_region_3d);
_mouse = mouse.attach_new_node(mw);
}
return _mouse;
}
////////////////////////////////////////////////////////////////////
// Function: WindowFramework::enable_keyboard
// Access: Public
// Description: Creates a ButtonThrower to listen to button presses
// and throw them as events.
////////////////////////////////////////////////////////////////////
void WindowFramework::
enable_keyboard() {
if (_got_keyboard) {
return;
}
if (_window->get_num_input_devices() > 0) {
NodePath mouse = get_mouse();
// Create a button thrower to listen for our keyboard events and
// associate this WindowFramework pointer with each one.
PT(ButtonThrower) bt = new ButtonThrower("kb-events");
bt->add_parameter(EventParameter(this));
ModifierButtons mods;
mods.add_button(KeyboardButton::shift());
mods.add_button(KeyboardButton::control());
mods.add_button(KeyboardButton::alt());
bt->set_modifier_buttons(mods);
mouse.attach_new_node(bt);
}
_got_keyboard = true;
}
////////////////////////////////////////////////////////////////////
// Function: WindowFramework::setup_trackball
// Access: Public
// Description: Sets up the mouse to trackball around the camera.
////////////////////////////////////////////////////////////////////
void WindowFramework::
setup_trackball() {
if (_got_trackball) {
return;
}
if (_window->get_num_input_devices() > 0) {
NodePath mouse = get_mouse();
NodePath camera = get_camera_group();
_trackball = new Trackball("trackball");
_trackball->set_pos(LVector3f::forward() * 50.0);
mouse.attach_new_node(_trackball);
PT(Transform2SG) tball2cam = new Transform2SG("tball2cam");
tball2cam->set_node(camera.node());
_trackball->add_child(tball2cam);
}
_got_trackball = true;
}
////////////////////////////////////////////////////////////////////
// Function: WindowFramework::center_trackball
// Access: Public
// Description: Centers the trackball on the indicated object, and
// scales the trackball motion suitably.
////////////////////////////////////////////////////////////////////
void WindowFramework::
center_trackball(const NodePath &object) {
if (_trackball == (Trackball *)NULL) {
return;
}
PT(BoundingVolume) volume = object.get_bounds();
// We expect at least a geometric bounding volume around the world.
nassertv(volume != (BoundingVolume *)NULL);
nassertv(volume->is_of_type(GeometricBoundingVolume::get_class_type()));
GeometricBoundingVolume *gbv = DCAST(GeometricBoundingVolume, volume);
// Determine the bounding sphere around the world. The topmost
// BoundingVolume might itself be a sphere (it's likely), but since
// it might not, we'll take no chances and make our own sphere.
PT(BoundingSphere) sphere = new BoundingSphere;
if (!sphere->extend_by(gbv)) {
framework_cat.warning()
<< "Cannot determine bounding volume of " << object << "\n";
return;
}
if (sphere->is_infinite()) {
framework_cat.warning()
<< "Infinite bounding volume for " << object << "\n";
return;
}
if (sphere->is_empty()) {
framework_cat.warning()
<< "Empty bounding volume for " << object << "\n";
return;
}
LPoint3f center = sphere->get_center();
float radius = sphere->get_radius();
float distance = 50.0f;
// Choose a suitable distance to view the whole volume in our frame.
// This is based on the camera lens in use. Determine the lens
// based on the first camera; this will be the default camera.
Lens *lens = (Lens *)NULL;
if (!_cameras.empty()) {
Cameras::const_iterator ci;
for (ci = _cameras.begin();
ci != _cameras.end() && lens == (Lens *)NULL;
++ci) {
lens = (*ci)->get_lens();
}
}
if (lens != (Lens *)NULL) {
LVecBase2f fov = lens->get_fov();
distance = radius / ctan(deg_2_rad(min(fov[0], fov[1]) / 2.0f));
// Ensure the far plane is far enough back to see the entire object.
float ideal_far_plane = distance + radius;
lens->set_far(max(lens->get_default_far(), ideal_far_plane));
// And that the near plane is far enough forward.
float ideal_near_plane = distance - radius;
lens->set_near(min(lens->get_default_near(), ideal_near_plane));
}
_trackball->set_origin(center);
_trackball->set_pos(LVector3f::forward() * distance);
// Also set the movement scale on the trackball to be consistent
// with the size of the model and the lens field-of-view.
_trackball->set_forward_scale(distance * 0.006);
}
////////////////////////////////////////////////////////////////////
// Function: WindowFramework::load_models
// Access: Public
// Description: Loads up all the model files listed in the indicated
// argument list. If first_arg is supplied, it is the
// first argument in the list to consider.
//
// Returns true if all models loaded successfully, or
// false if at least one of them had an error.
////////////////////////////////////////////////////////////////////
bool WindowFramework::
load_models(const NodePath &parent, int argc, char *argv[], int first_arg) {
pvector<Filename> files;
for (int i = first_arg; i < argc && argv[i] != (char *)NULL; i++) {
files.push_back(Filename::from_os_specific(argv[i]));
}
return load_models(parent, files);
}
////////////////////////////////////////////////////////////////////
// Function: WindowFramework::load_models
// Access: Public
// Description: Loads up all the model files listed in the indicated
// argument list.
//
// Returns true if all models loaded successfully, or
// false if at least one of them had an error.
////////////////////////////////////////////////////////////////////
bool WindowFramework::
load_models(const NodePath &parent, const pvector<Filename> &files) {
bool all_ok = true;
pvector<Filename>::const_iterator fi;
for (fi = files.begin(); fi != files.end(); ++fi) {
const Filename &filename = (*fi);
NodePath model = load_model(parent, filename);
if (model.is_empty()) {
all_ok = false;
}
}
return all_ok;
}
////////////////////////////////////////////////////////////////////
// Function: WindowFramework::load_model
// Access: Public
// Description: Loads up the indicated model and returns the new
// NodePath, or the empty NodePath if the model could
// not be loaded.
////////////////////////////////////////////////////////////////////
NodePath WindowFramework::
load_model(const NodePath &parent, Filename filename) {
nout << "Loading " << filename << "\n";
// If the filename already exists where it is, or if it is fully
// qualified, don't search along the model path for it.
VirtualFileSystem *vfs = VirtualFileSystem::get_global_ptr();
bool search = !(filename.is_fully_qualified() || vfs->exists(filename));
// We allow loading image files here. Check to see if it might be
// an image file, based on the filename extension.
bool is_image = false;
string extension = filename.get_extension();
if (!extension.empty()) {
LoaderFileTypeRegistry *reg = LoaderFileTypeRegistry::get_global_ptr();
LoaderFileType *model_type =
reg->get_type_from_extension(extension);
if (model_type == (LoaderFileType *)NULL) {
// The extension isn't a known model file type, is it a known
// image extension?
PNMFileTypeRegistry *reg = PNMFileTypeRegistry::get_global_ptr();
PNMFileType *image_type =
reg->get_type_from_extension(extension);
if (image_type != (PNMFileType *)NULL) {
// It is a known image extension.
is_image = true;
}
}
}
Loader loader;
PT(PandaNode) node;
if (is_image) {
node = load_image_as_model(filename);
} else {
node = loader.load_sync(filename, search);
}
if (node == (PandaNode *)NULL) {
nout << "Unable to load " << filename << "\n";
return NodePath::not_found();
}
return parent.attach_new_node(node);
}
////////////////////////////////////////////////////////////////////
// Function: WindowFramework::load_default_model
// Access: Public
// Description: Loads our favorite blue triangle. This is intended
// to provide some default geometry to have *something*
// to look at for testing, when no other models are
// provided.
////////////////////////////////////////////////////////////////////
NodePath WindowFramework::
load_default_model(const NodePath &parent) {
CPT(RenderState) state = RenderState::make_empty();
// Get the default texture to apply to the triangle; it's compiled
// into the code these days.
string rock_floor_string((const char *)rock_floor, rock_floor_len);
istringstream rock_floor_strm(rock_floor_string);
PNMImage rock_floor_pnm;
if (rock_floor_pnm.read(rock_floor_strm, "rock-floor.rgb")) {
PT(Texture) tex = new Texture;
tex->set_name("rock-floor.rgb");
tex->load(rock_floor_pnm);
tex->set_minfilter(Texture::FT_linear);
tex->set_magfilter(Texture::FT_linear);
state = state->add_attrib(TextureAttrib::make(tex));
}
GeomNode *geomnode = new GeomNode("tri");
if (use_qpgeom) {
// New, experimental Geom code.
PT(qpGeomVertexData) vdata = new qpGeomVertexData
(string(), qpGeomVertexFormat::get_v3n3cpt2(),
qpGeom::UH_static);
qpGeomVertexWriter vertex(vdata, InternalName::get_vertex());
qpGeomVertexWriter normal(vdata, InternalName::get_normal());
qpGeomVertexWriter color(vdata, InternalName::get_color());
qpGeomVertexWriter texcoord(vdata, InternalName::get_texcoord());
vertex.add_data3f(Vertexf::rfu(0.0, 0.0, 0.0));
vertex.add_data3f(Vertexf::rfu(1.0, 0.0, 0.0));
vertex.add_data3f(Vertexf::rfu(0.0, 0.0, 1.0));
normal.add_data3f(Normalf::back());
normal.add_data3f(Normalf::back());
normal.add_data3f(Normalf::back());
color.add_data4f(0.5, 0.5, 1.0, 1.0);
color.add_data4f(0.5, 0.5, 1.0, 1.0);
color.add_data4f(0.5, 0.5, 1.0, 1.0);
texcoord.add_data2f(0.0, 0.0);
texcoord.add_data2f(1.0, 0.0);
texcoord.add_data2f(0.0, 1.0);
PT(qpGeomTriangles) tri = new qpGeomTriangles(qpGeom::UH_static);
tri->add_consecutive_vertices(0, 3);
tri->close_primitive();
PT(qpGeom) geom = new qpGeom;
geom->set_vertex_data(vdata);
geom->add_primitive(tri);
geomnode->add_geom(geom, state);
} else {
// Original, tried-and-true Geom code.
PTA_Vertexf coords;
PTA_TexCoordf uvs;
PTA_Normalf norms;
PTA_Colorf colors;
PTA_ushort cindex;
coords.push_back(Vertexf::rfu(0.0, 0.0, 0.0));
coords.push_back(Vertexf::rfu(1.0, 0.0, 0.0));
coords.push_back(Vertexf::rfu(0.0, 0.0, 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);
geomnode->add_geom(geom, state);
}
return parent.attach_new_node(geomnode);
}
////////////////////////////////////////////////////////////////////
// Function: WindowFramework::loop_animations
// Access: Public
// Description: Looks for characters and their matching animation
// files in the scene graph; binds and loops any
// matching animations found.
////////////////////////////////////////////////////////////////////
void WindowFramework::
loop_animations() {
// If we happened to load up both a character file and its matching
// animation file, attempt to bind them together now and start the
// animations looping.
auto_bind(get_render().node(), _anim_controls, ~0);
_anim_controls.loop_all(true);
}
////////////////////////////////////////////////////////////////////
// Function: WindowFramework::split_window
// Access: Public
// Description: Divides the window into two display regions, each of
// which gets its own trackball and keyboard events.
// The new window pointer is returned.
//
// There is not an interface for recombining divided
// windows.
////////////////////////////////////////////////////////////////////
WindowFramework *WindowFramework::
split_window(SplitType split_type) {
DisplayRegion *new_region = NULL;
if (split_type == ST_default) {
// Choose either horizontal or vertical according to the largest
// dimension.
if (_display_region_3d->get_pixel_width() >
_display_region_3d->get_pixel_height()) {
split_type = ST_horizontal;
} else {
split_type = ST_vertical;
}
}
float left, right, bottom, top;
_display_region_3d->get_dimensions(left, right, bottom, top);
new_region = _display_region_3d->get_window()->make_display_region();
if (split_type == ST_vertical) {
_display_region_3d->set_dimensions(left, right, bottom, (top + bottom) / 2.0f);
if (_display_region_2d != (DisplayRegion *)NULL) {
_display_region_2d->set_dimensions(left, right, bottom, (top + bottom) / 2.0f);
}
new_region->set_dimensions(left, right, (top + bottom) / 2.0f, top);
} else {
_display_region_3d->set_dimensions(left, (left + right) / 2.0f, bottom, top);
if (_display_region_2d != (DisplayRegion *)NULL) {
_display_region_2d->set_dimensions(left, (left + right) / 2.0f, bottom, top);
}
new_region->set_dimensions((left + right) / 2.0f, right, bottom, top);
}
PT(WindowFramework) wf = new WindowFramework(*this, new_region);
_panda_framework->_windows.push_back(wf);
return wf;
}
////////////////////////////////////////////////////////////////////
// Function: WindowFramework::set_wireframe
// Access: Public
// Description: Forces wireframe state (true) or restores default
// rendering (false).
////////////////////////////////////////////////////////////////////
void WindowFramework::
set_wireframe(bool enable) {
if (enable == _wireframe_enabled) {
return;
}
NodePath render = get_render();
if (enable) {
render.set_render_mode_wireframe(override_priority);
render.set_two_sided(true, override_priority);
} else {
render.clear_render_mode();
if (!_two_sided_enabled) {
render.clear_two_sided();
}
if (_one_sided_reverse_enabled) {
CPT(RenderAttrib) attrib = CullFaceAttrib::make_reverse();
render.node()->set_attrib(attrib);
}
}
_wireframe_enabled = enable;
}
////////////////////////////////////////////////////////////////////
// Function: WindowFramework::set_texture
// Access: Public
// Description: Forces textures off (false) or restores default
// rendering (true).
////////////////////////////////////////////////////////////////////
void WindowFramework::
set_texture(bool enable) {
if (enable == _texture_enabled) {
return;
}
NodePath render = get_render();
if (!enable) {
render.set_texture_off(override_priority);
} else {
render.clear_texture();
}
_texture_enabled = enable;
}
////////////////////////////////////////////////////////////////////
// Function: WindowFramework::set_two_sided
// Access: Public
// Description: Forces two-sided rendering (true) or restores default
// rendering (false).
////////////////////////////////////////////////////////////////////
void WindowFramework::
set_two_sided(bool enable) {
if (enable == _two_sided_enabled) {
return;
}
NodePath render = get_render();
if (enable) {
render.set_two_sided(true, override_priority);
} else {
if (!_wireframe_enabled) {
render.clear_two_sided();
}
}
_two_sided_enabled = enable;
_one_sided_reverse_enabled = false;
}
////////////////////////////////////////////////////////////////////
// Function: WindowFramework::set_one_sided_reverse
// Access: Public
// Description: Toggles one-sided reverse mode. In this mode, the
// front sides of one-sided polygons are culled instead
// of the back side.
////////////////////////////////////////////////////////////////////
void WindowFramework::
set_one_sided_reverse(bool enable) {
if (enable == _one_sided_reverse_enabled) {
return;
}
NodePath render = get_render();
if (!_wireframe_enabled) {
if (enable) {
CPT(RenderAttrib) attrib = CullFaceAttrib::make_reverse();
render.node()->set_attrib(attrib);
} else {
render.clear_two_sided();
}
}
_two_sided_enabled = false;
_one_sided_reverse_enabled = enable;
}
////////////////////////////////////////////////////////////////////
// Function: WindowFramework::set_lighting
// Access: Public
// Description: Turns lighting on (true) or off (false).
////////////////////////////////////////////////////////////////////
void WindowFramework::
set_lighting(bool enable) {
if (enable == _lighting_enabled) {
return;
}
NodePath render = get_render();
if (enable) {
if (!_got_lights) {
setup_lights();
}
render.node()->set_attrib(LightAttrib::make(LightAttrib::O_add,
_alight, _dlight));
} else {
render.node()->clear_attrib(LightAttrib::get_class_type());
}
_lighting_enabled = enable;
}
////////////////////////////////////////////////////////////////////
// Function: WindowFramework::set_background_type
// Access: Public
// Description: Sets the background of the window to one of the
// pre-canned background types (or to BT_other, which
// indicates the user intends to set up his own special
// background mode).
////////////////////////////////////////////////////////////////////
void WindowFramework::
set_background_type(WindowFramework::BackgroundType type) {
_background_type = type;
if (_display_region_3d == (DisplayRegion *)NULL) {
return;
}
switch (_background_type) {
case BT_other:
break;
case BT_default:
_display_region_3d->set_clear_color_active(true);
_display_region_3d->set_clear_depth_active(true);
_display_region_3d->set_clear_color(_window->get_clear_color());
_display_region_3d->set_clear_depth(_window->get_clear_depth());
break;
case BT_black:
_display_region_3d->set_clear_color_active(true);
_display_region_3d->set_clear_depth_active(true);
_display_region_3d->set_clear_color(Colorf(0.0f, 0.0f, 0.0f, 0.0f));
_display_region_3d->set_clear_depth(1.0f);
break;
case BT_gray:
_display_region_3d->set_clear_color_active(true);
_display_region_3d->set_clear_depth_active(true);
_display_region_3d->set_clear_color(Colorf(0.3f, 0.3f, 0.3f, 0.0f));
_display_region_3d->set_clear_depth(1.0f);
break;
case BT_white:
_display_region_3d->set_clear_color_active(true);
_display_region_3d->set_clear_depth_active(true);
_display_region_3d->set_clear_color(Colorf(1.0f, 1.0f, 1.0f, 0.0f));
_display_region_3d->set_clear_depth(1.0f);
break;
case BT_none:
_display_region_3d->set_clear_color_active(false);
_display_region_3d->set_clear_depth_active(false);
break;
}
}
////////////////////////////////////////////////////////////////////
// Function: WindowFramework::make_camera
// Access: Protected
// Description: Makes a new 3-d camera for the window.
////////////////////////////////////////////////////////////////////
PT(Camera) WindowFramework::
make_camera() {
// Finally, we need a camera to associate with the display region.
PT(Camera) camera = new Camera("camera");
NodePath camera_np = get_camera_group().attach_new_node(camera);
_cameras.push_back(camera);
PT(Lens) lens = new PerspectiveLens;
if (aspect_ratio != 0.0f) {
// If we're given an explict aspect ratio, use it
lens->set_aspect_ratio(aspect_ratio);
} else {
// Otherwise, infer the aspect ratio from the window size. This
// does assume we have square pixels on our output device.
WindowProperties properties = _window->get_properties();
if (!properties.has_size()) {
properties = _window->get_requested_properties();
}
if (properties.has_size()) {
lens->set_film_size(properties.get_x_size(), properties.get_y_size());
}
}
camera->set_lens(lens);
_display_region_3d->set_camera(camera_np);
return camera;
}
////////////////////////////////////////////////////////////////////
// Function: WindowFramework::setup_lights
// Access: Protected
// Description: Makes light nodes and attaches them to the camera for
// viewing the scene.
////////////////////////////////////////////////////////////////////
void WindowFramework::
setup_lights() {
if (_got_lights) {
return;
}
NodePath camera_group = get_camera_group();
NodePath light_group = camera_group.attach_new_node("lights");
_alight = new AmbientLight("ambient");
_alight->set_color(Colorf(0.2f, 0.2f, 0.2f, 1.0f));
_dlight = new DirectionalLight("directional");
light_group.attach_new_node(_alight);
light_group.attach_new_node(_dlight);
_got_lights = true;
}
////////////////////////////////////////////////////////////////////
// Function: WindowFramework::load_image_as_model
// Access: Private
// Description: Loads the indicated image file as a texture, and
// creates a polygon to render it. Returns the new
// model.
////////////////////////////////////////////////////////////////////
PT(PandaNode) WindowFramework::
load_image_as_model(const Filename &filename) {
PNMImageHeader header;
if (!header.read_header(filename)) {
return NULL;
}
int x_size = header.get_x_size();
int y_size = header.get_y_size();
bool has_alpha = header.has_alpha();
// Yes, it is an image file; make a texture out of it.
PT(Texture) tex = new Texture;
if (!tex->read(filename)) {
return NULL;
}
tex->set_minfilter(Texture::FT_linear_mipmap_linear);
tex->set_magfilter(Texture::FT_linear);
// Ok, now make a polygon to show the texture.
// Choose the dimensions of the polygon appropriately.
float left = -x_size / 2.0;
float right = x_size / 2.0;
float bottom = -y_size / 2.0;
float top = y_size / 2.0;
PT(GeomNode) card_node = new GeomNode("card");
card_node->set_attrib(ColorAttrib::make_flat(Colorf(1.0f, 1.0f, 1.0f, 1.0f)));
card_node->set_attrib(TextureAttrib::make(tex));
if (has_alpha) {
card_node->set_attrib(TransparencyAttrib::make(TransparencyAttrib::M_alpha));
}
if (use_qpgeom) {
PT(qpGeomVertexData) vdata = new qpGeomVertexData
(string(), qpGeomVertexFormat::get_v3t2(),
qpGeom::UH_static);
qpGeomVertexWriter vertex(vdata, InternalName::get_vertex());
qpGeomVertexWriter texcoord(vdata, InternalName::get_texcoord());
vertex.add_data3f(Vertexf::rfu(left, 0.02f, top));
vertex.add_data3f(Vertexf::rfu(left, 0.02f, bottom));
vertex.add_data3f(Vertexf::rfu(right, 0.02f, top));
vertex.add_data3f(Vertexf::rfu(right, 0.02f, bottom));
texcoord.add_data2f(0.0f, 1.0f);
texcoord.add_data2f(0.0f, 0.0f);
texcoord.add_data2f(1.0f, 1.0f);
texcoord.add_data2f(1.0f, 0.0f);
PT(qpGeomTristrips) strip = new qpGeomTristrips(qpGeom::UH_static);
strip->add_consecutive_vertices(0, 4);
strip->close_primitive();
PT(qpGeom) geom = new qpGeom;
geom->set_vertex_data(vdata);
geom->add_primitive(strip);
card_node->add_geom(geom);
} else {
GeomTristrip *geom = new GeomTristrip;
PTA_int lengths=PTA_int::empty_array(0);
lengths.push_back(4);
PTA_Vertexf verts;
verts.push_back(Vertexf::rfu(left, 0.02f, top));
verts.push_back(Vertexf::rfu(left, 0.02f, bottom));
verts.push_back(Vertexf::rfu(right, 0.02f, top));
verts.push_back(Vertexf::rfu(right, 0.02f, bottom));
geom->set_num_prims(1);
geom->set_lengths(lengths);
geom->set_coords(verts);
PTA_TexCoordf uvs;
uvs.push_back(TexCoordf(0.0f, 1.0f));
uvs.push_back(TexCoordf(0.0f, 0.0f));
uvs.push_back(TexCoordf(1.0f, 1.0f));
uvs.push_back(TexCoordf(1.0f, 0.0f));
geom->set_texcoords(uvs, G_PER_VERTEX);
card_node->add_geom(geom);
}
return card_node.p();
}
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