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arosg.cpp
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/*
* arosg.cpp
* artoolkitX
*
* This file is part of artoolkitX.
*
* artoolkitX is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* artoolkitX is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with artoolkitX. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders of this library give you
* permission to link this library with independent modules to produce an
* executable, regardless of the license terms of these independent modules, and to
* copy and distribute the resulting executable under terms of your choice,
* provided that you also meet, for each linked independent module, the terms and
* conditions of the license of that module. An independent module is a module
* which is neither derived from nor based on this library. If you modify this
* library, you may extend this exception to your version of the library, but you
* are not obligated to do so. If you do not wish to do so, delete this exception
* statement from your version.
*
* Copyright 2020 Mozilla.
* Copyright 2018 Realmax, Inc.
* Copyright 2015-2016 Daqri, LLC.
* Copyright 2009-2015 ARToolworks, Inc.
*
* Author(s): Philip Lamb
*
*/
#include "arosg.h"
#include <stdio.h>
#include <string.h>
#include <cmath>
#include <osg/GL>
#include <osg/Node>
#include <osg/ShapeDrawable>
#include <osg/FrontFace>
#include <osg/MatrixTransform>
#include <osg/LightModel>
#include <osgViewer/Viewer>
#include <osgDB/ReadFile>
#include <osgFX/Outline>
#include <osg/AnimationPath>
#include <osg/NodeVisitor>
#include <osg/Texture2D>
#include <osg/TextureRectangle>
#include <osgDB/FileNameUtils>
#include <osgUtil/Optimizer>
#include <osgText/Text>
#include <osg/ComputeBoundsVisitor>
#if ARX_TARGET_PLATFORM_IOS || ARX_TARGET_PLATFORM_ANDROID || defined(__EMSCRIPTEN__)
# include "osgPlugins.h"
#endif
#ifndef OSG_GL_FIXED_FUNCTION_AVAILABLE
# include "shaders.h"
#endif
#ifdef _WIN32
# include <windows.h>
# define MAXPATHLEN MAX_PATH
#else
# include <sys/param.h> // MAXPATHLEN
#endif
#ifdef __EMSCRIPTEN__
# include <emscripten/html5.h>
# include "emscripten_err_desc.h"
#endif
#define AR_OSG_NODE_MASK_DRAWABLE 0x01
#define AR_OSG_NODE_MASK_SELECTABLE 0x02
class Logger;
// Debugging hint. To get more log detail from OSG, wrap the call with these directives:
// osg::setNotifyLevel(osg::DEBUG_INFO);
// (OSG call here)
// osg::setNotifyLevel(osg::NOTICE);
struct _AROSG {
osg::ref_ptr<osgViewer::Viewer> viewer;
osg::observer_ptr<osgViewer::GraphicsWindow> window;
osg::ref_ptr<osg::Group> sg;
int prevIndex;
int maxModels;
osg::ref_ptr<osg::MatrixTransform> *models;
osg::ref_ptr<osg::MatrixTransform> rays[AR_OSG_RAYS_MAX];
bool rayHit[AR_OSG_RAYS_MAX];
osg::Vec3f rayHitPos[AR_OSG_RAYS_MAX];
osg::Vec3f rayHitNorm[AR_OSG_RAYS_MAX];
int rayHitModelIndex[AR_OSG_RAYS_MAX];
int frontFaceWinding;
double time;
#ifndef OSG_GL_FIXED_FUNCTION_AVAILABLE
// global programs
osg::ref_ptr<osg::Program> _vertColorProgram;
osg::ref_ptr<osg::Program> _textureProgram;
#endif
#ifdef __EMSCRIPTEN__
EMSCRIPTEN_WEBGL_CONTEXT_HANDLE webGLCtx;
#endif
osg::ref_ptr<Logger> logger;
osg::ref_ptr<osgText::Font> font;
};
static const std::string imageExtensions[] = {
"jpeg", "jpg", "jpe", "tiff", "tif", "gif", "png", "psd", "tga",
"bmp", "rgb", "rgba", "sgi", "int", "inta", "bw",
"pnm", "ppm", "pgm", "pbm", "pic", "hdr", "dds",
"mov", "avi", "mpeg", "mpg", "mpe", "mpv", "mp4", "m4v", "dv", "flv", "m2v", "m1v",
"" // List must end with empty string.
};
//
// Shape drawables sometimes use gl_quads so use this function to convert
//
void optimizeNode(osg::Node* node) {
osgUtil::Optimizer optimizer;
optimizer.optimize(node, osgUtil::Optimizer::TRISTRIP_GEOMETRY);
}
class ManageAnimationNodesVisitor : public osg::NodeVisitor
{
public:
ManageAnimationNodesVisitor(): osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN)
{
}
virtual ~ManageAnimationNodesVisitor()
{
}
virtual void apply(osg::Transform& transform)
{
osg::AnimationPathCallback* apc = dynamic_cast<osg::AnimationPathCallback*>(transform.getUpdateCallback());
if (apc) {
_selectedCallbacks.push_back(apc);
}
traverse(transform); // Can have children, so need to traverse always.
}
void setLoopMode(osg::AnimationPath::LoopMode mode)
{
for (SelectedCallbacks::iterator itr = _selectedCallbacks.begin(); itr != _selectedCallbacks.end(); ++itr) {
osg::AnimationPathCallback* apc = itr->get();
osg::AnimationPath* ap = apc->getAnimationPath();
if (ap) ap->setLoopMode(mode);
}
}
void setPause(bool animationPaused, double simulationTime)
{
for (SelectedCallbacks::iterator itr = _selectedCallbacks.begin(); itr != _selectedCallbacks.end(); ++itr) {
osg::AnimationPathCallback* apc = itr->get();
apc->_latestTime = simulationTime;
apc->setPause(animationPaused);
}
}
double getAnimationTime(void)
{
if (_selectedCallbacks.size() < 1) return (0.0);
return (_selectedCallbacks[0]->getAnimationTime()); // Hardcoded [0] = gets the time on only the first callback found.
}
typedef std::vector< osg::ref_ptr<osg::AnimationPathCallback> > SelectedCallbacks;
SelectedCallbacks _selectedCallbacks;
}; // class ManageAnimationNodesVisitor.
// Reset is handled separately, as we actually need to have access to the node.
class ResetAnimationNodesVisitor : public osg::NodeVisitor
{
public:
ResetAnimationNodesVisitor() : osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN)
{
}
virtual ~ResetAnimationNodesVisitor()
{
}
virtual void apply(osg::Transform& transform)
{
osg::AnimationPathCallback* apc = dynamic_cast<osg::AnimationPathCallback*>(transform.getUpdateCallback());
if (apc) {
// Here we encounter a bug in OSG. If the animation path callback is paused, reset() doesn't actually reset the
// animation itself, but resets only the animation time. The animation is only updated when the animation
// is unpaused (and therefore update()s on the animation path callback are processed again).
// To workaround this, we do a rather complicated sequence if it's paused. including an update().
if (apc->getPause()) {
apc->setPause(false); // Moves _firstTime forward by the amount of time since pause started.
double animationTime = apc->getAnimationTime(); // (_latestTime-_firstTime)-_timeOffset
apc->setTimeOffset(animationTime); // Now animationTime will calculate as 0.0, and pause is off, so update() will actually do something.
apc->update(transform);
apc->setTimeOffset(0.0); // Get rid if the offset we used temporarily.
apc->reset(); // Reset the other times.
apc->setPause(true);
} else {
apc->reset();
apc->update(transform);
}
}
traverse(transform); // Can have children, so need to traverse always.
}
};
#ifdef __EMSCRIPTEN__
class SwizzleBGRTexturesVisitor : public osg::NodeVisitor
{
public:
SwizzleBGRTexturesVisitor(): osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN)
{
}
virtual void apply(osg::Node& node)
{
if (node.getStateSet()) apply(*node.getStateSet());
traverse(node);
}
virtual void apply(osg::Geode& node)
{
if (node.getStateSet()) apply(*node.getStateSet());
for(unsigned int i = 0; i < node.getNumDrawables(); ++i) {
osg::Drawable* drawable = node.getDrawable(i);
if (drawable && drawable->getStateSet()) apply(*drawable->getStateSet());
}
traverse(node);
}
virtual void apply(osg::StateSet& stateset)
{
// Search for the existence of any textures in BGR format.
for (unsigned int i = 0; i < stateset.getTextureAttributeList().size(); ++i) {
osg::Texture* texture = dynamic_cast<osg::Texture*>(stateset.getTextureAttribute(i, osg::StateAttribute::TEXTURE));
if (texture) {
_textureSet.insert(texture);
}
}
}
void swizzle()
{
osg::ref_ptr<osg::State> state = new osg::State;
state->initializeExtensionProcs();
int swizzleCount = 0;
for (TextureSet::iterator itr = _textureSet.begin(); itr != _textureSet.end(); ++itr) {
osg::Texture* texture = const_cast<osg::Texture*>(itr->get());
osg::Texture2D* texture2D = dynamic_cast<osg::Texture2D*>(texture);
if (texture2D) {
osg::ref_ptr<osg::Image> image = texture2D->getImage();
if (image && image.valid() && (image->getPixelFormat() == GL_BGR || image->getPixelFormat() == GL_BGRA)) {
int pixelSize = image->getPixelFormat() == GL_BGR ? 3 : 4;
for (osg::Image::DataIterator img_itr(image); img_itr.valid(); ++img_itr) {
uint8_t *p = (uint8_t *)img_itr.data();
size_t c = img_itr.size() / pixelSize;
for (size_t i = 0; i < c; i++) {
uint8_t t = *p;
*p = *(p + 2);
*(p + 2) = t;
p += pixelSize;
}
}
image->setPixelFormat(image->getPixelFormat() == GL_BGR ? GL_RGB : GL_RGBA);
texture->apply(*state);
swizzleCount++;
}
}
}
if (swizzleCount) ARLOGi("Swizzled %d textures from BGR format.\n", swizzleCount);
}
typedef std::set< osg::ref_ptr<osg::Texture> > TextureSet;
TextureSet _textureSet;
};
#endif // __EMSCRIPTEN__
osg::Geometry* myCreateTexturedQuadGeometry(const osg::Vec3& pos,float width,float height, osg::Image* image, bool useTextureRectangle, bool xyPlane, bool option_flip);
osg::Geometry* myCreateTexturedQuadGeometry(const osg::Vec3& pos,float width,float height, osg::Image* image, bool useTextureRectangle, bool xyPlane, bool option_flip)
{
bool flip = image->getOrigin()==osg::Image::TOP_LEFT;
if (option_flip) flip = !flip;
if (useTextureRectangle)
{
osg::Geometry* pictureQuad = osg::createTexturedQuadGeometry(pos,
osg::Vec3(width,0.0f,0.0f), // widthVec
xyPlane ? osg::Vec3(0.0f,height,0.0f) : osg::Vec3(0.0f,0.0f,height), // heightVec
0.0f, flip ? image->t() : 0.0, image->s(), flip ? 0.0 : image->t()); // left, bottom, right, top
osg::TextureRectangle* texture = new osg::TextureRectangle(image);
texture->setWrap(osg::Texture::WRAP_S, osg::Texture::CLAMP_TO_EDGE);
texture->setWrap(osg::Texture::WRAP_T, osg::Texture::CLAMP_TO_EDGE);
pictureQuad->getOrCreateStateSet()->setTextureAttributeAndModes(0,
texture,
osg::StateAttribute::ON);
return pictureQuad;
}
else
{
osg::Geometry* pictureQuad = osg::createTexturedQuadGeometry(pos,
osg::Vec3(width,0.0f,0.0f),
xyPlane ? osg::Vec3(0.0f,height,0.0f) : osg::Vec3(0.0f,0.0f,height),
0.0f, flip ? 1.0f : 0.0f , 1.0f, flip ? 0.0f : 1.0f);
osg::Texture2D* texture = new osg::Texture2D(image);
texture->setResizeNonPowerOfTwoHint(false);
texture->setFilter(osg::Texture::MIN_FILTER,osg::Texture::LINEAR);
texture->setWrap(osg::Texture::WRAP_S, osg::Texture::CLAMP_TO_EDGE);
texture->setWrap(osg::Texture::WRAP_T, osg::Texture::CLAMP_TO_EDGE);
pictureQuad->getOrCreateStateSet()->setTextureAttributeAndModes(0,
texture,
osg::StateAttribute::ON);
return pictureQuad;
}
}
// This class prints OpenSceneGraph notifications to console.
class Logger : public osg::NotifyHandler
{
public:
Logger() { }
virtual ~Logger() { }
// Override NotifyHandler::notify() to receive OpenSceneGraph notifications.
void notify(osg::NotifySeverity severity, const char *message)
{
switch (severity) {
case osg::ALWAYS:
case osg::FATAL:
ARLOGe("%s", message);
break;
case osg::WARN:
ARLOGw("%s", message);
break;
case osg::NOTICE:
case osg::INFO:
ARLOGi("%s", message);
break;
case osg::DEBUG_INFO:
case osg::DEBUG_FP:
ARLOGd("%s", message);
break;
default:
break;
}
}
};
extern "C" {
unsigned int AR_OSG_EXTDEF arOSGGetVersion()
{
return (0x10000000u * ((unsigned int)AR_HEADER_VERSION_MAJOR / 10u) +
0x01000000u * ((unsigned int)AR_HEADER_VERSION_MAJOR % 10u) +
0x00100000u * ((unsigned int)AR_HEADER_VERSION_MINOR / 10u) +
0x00010000u * ((unsigned int)AR_HEADER_VERSION_MINOR % 10u) +
0x00001000u * ((unsigned int)AR_HEADER_VERSION_TINY / 10u) +
0x00000100u * ((unsigned int)AR_HEADER_VERSION_TINY % 10u) +
0x00000010u * ((unsigned int)AR_HEADER_VERSION_DEV / 10u) +
0x00000001u * ((unsigned int)AR_HEADER_VERSION_DEV % 10u)
);
}
ARG_API AR_OSG_EXTDEF arOSGGetPreferredAPI()
{
#if defined(OSG_GLES2_AVAILABLE) || defined(OSG_GLES3_AVAILABLE)
return (ARG_API_GLES2);
#elif defined(OSG_GL3_AVAILABLE)
return (ARG_API_GL3);
#elif defined(OSG_GL1_AVAILABLE) || defined(OSG_GL2_AVAILABLE)
return (ARG_API_GL);
#else
return (ARG_API_None);
#endif
}
AROSG AR_OSG_EXTDEF *arOSGInit(int maxModels)
{
AROSG *arOsg;
arOsg = (AROSG *)calloc(1, sizeof(AROSG));
if (!arOsg) return (nullptr);
arOsg->models = (osg::ref_ptr<osg::MatrixTransform> *)calloc(maxModels, sizeof(osg::ref_ptr<osg::MatrixTransform>));
if (!arOsg->models) {
free(arOsg);
return (nullptr);
}
arOsg->maxModels = maxModels;
#ifdef __EMSCRIPTEN__
EmscriptenWebGLContextAttributes attrs;
emscripten_webgl_init_context_attributes(&attrs);
attrs.enableExtensionsByDefault = 1;
attrs.majorVersion = 2;
attrs.minorVersion = 0;
// attr.depth = 1;
// attr.alpha = attr.stencil = attr.antialias = 0;
arOsg->webGLCtx = emscripten_webgl_create_context("#canvas", &attrs);
if (arOsg->webGLCtx <= 0) {
ARLOGe("arOSGInit: Can't create WebGL context. Emscripten error: '%s'\n", emscripten_err_desc(arOsg->webGLCtx));
free (arOsg);
return (nullptr);
} else {
ARLOGi("arOSGInit got WebGL context 0x%lx.\n", arOsg->webGLCtx);
if (emscripten_webgl_make_context_current(arOsg->webGLCtx) != EMSCRIPTEN_RESULT_SUCCESS) {
ARLOGe("Error in emscripten_webgl_make_context_current().\n");
free (arOsg);
return (nullptr);
};
}
#endif
arOsg->logger = new Logger;
osg::setNotifyHandler(arOsg->logger);
//osg::setNotifyLevel(osg::NOTICE);
osg::setNotifyLevel(osg::INFO);
arOsg->sg = new osg::Group;
arOsg->prevIndex = maxModels - 1;
arOsg->time = USE_REFERENCE_TIME;
// create our default programs
#ifndef OSG_GL_FIXED_FUNCTION_AVAILABLE
arOsg->_vertColorProgram = new osg::Program();
arOsg->_vertColorProgram->addShader( new osg::Shader(osg::Shader::VERTEX, ColorShaderVert));
arOsg->_vertColorProgram->addShader( new osg::Shader(osg::Shader::FRAGMENT, ColorShaderFrag));
arOsg->_vertColorProgram->setName("AROSG ColorShaderProgram");
arOsg->_textureProgram = new osg::Program();
arOsg->_textureProgram->addShader( new osg::Shader(osg::Shader::VERTEX, TextureShaderVert));
arOsg->_textureProgram->addShader( new osg::Shader(osg::Shader::FRAGMENT, TextureShaderFrag));
arOsg->_textureProgram->setName("AROSG TextureShaderProgram");
#endif
return (arOsg);
}
void AR_OSG_EXTDEF arOSGFinal(AROSG *arOsg)
{
if (!arOsg) return;
#ifdef __EMSCRIPTEN__
if (emscripten_webgl_make_context_current(arOsg->webGLCtx) != EMSCRIPTEN_RESULT_SUCCESS) {
ARLOGw("Error in emscripten_webgl_make_context_current().\n");
};
#endif
//if (arOsg->viewer.valid()) arOsg->viewer->unref();
//if (arOsg->sg.valid()) arOsg->sg->unref();
osg::setNotifyHandler(nullptr);
arOsg->logger = nullptr;
free (arOsg->models);
free (arOsg);
}
static char *get_buff(char *buf, int n, FILE *fp, int skipblanks)
{
char *ret;
do {
ret = fgets(buf, n, fp);
if (ret == NULL) return (NULL); // EOF or error.
// Remove NLs and CRs from end of string.
size_t l = strlen(buf);
while (l > 0) {
if (buf[l - 1] != '\n' && buf[l - 1] != '\r') break;
l--;
buf[l] = '\0';
}
} while (buf[0] == '#' || (skipblanks && buf[0] == '\0')); // Reject comments and blank lines.
return (ret);
}
static int AR_OSG_EXTDEF arOSGLoadInternal(AROSG *arOsg, osg::ref_ptr<osg::Node> model, const double translation[3], const double rotation[4], const double scale[3])
{
// Find a free slot in the models array.
int index = arOsg->prevIndex;
do {
index++;
if (index >= arOsg->maxModels) index = 0;
} while (index != arOsg->prevIndex && arOsg->models[index] != nullptr);
if (index == arOsg->prevIndex) {
ARLOGe("Error: Unable to load model, maximum number of models (%d) already loaded.\n", arOsg->maxModels);
return (-1);
};
arOsg->prevIndex = index; // Save for next time.
//osg::BoundingSphere bs = model->getBound();
//ARLOGd("Model: radius %f, center (%f,%f,%f).\n", bs.radius(), bs.center().x(), bs.center().y(), bs.center().z());
// Add the transform that will be used for the live pose (i.e. the modelview).
arOsg->models[index] = new osg::MatrixTransform; // Save the pointer.
arOsg->sg->addChild(arOsg->models[index].get());
// Add the transform that will be used for the local pose.
osg::ref_ptr<osg::MatrixTransform> modelTransform = new osg::MatrixTransform; // Save the pointer.
arOsg->models[index]->addChild(modelTransform.get());
modelTransform->setMatrix(osg::Matrix());
// Add the transform for the model static configuration.
osg::ref_ptr<osg::MatrixTransform> configTransform = new osg::MatrixTransform;
modelTransform->addChild(configTransform.get());
configTransform->setMatrix(osg::Matrix());
if (translation) configTransform->preMult(osg::Matrix::translate(translation[0], translation[1], translation[2]));
if (rotation) configTransform->preMult(osg::Matrix::rotate(osg::inDegrees(rotation[0]), rotation[1], rotation[2], rotation[3]));
if (scale) {
configTransform->preMult(osg::Matrix::scale(scale[0], scale[1], scale[2]));
#ifdef OSG_GL_FIXED_FUNCTION_AVAILABLE
configTransform->getOrCreateStateSet()->setMode(GL_RESCALE_NORMAL, osg::StateAttribute::ON); // Rescale normals.
#endif
}
#ifdef __EMSCRIPTEN__
// Fixes for a WebGL-compatible model.
// Enable VBOs.
osgUtil::GLObjectsVisitor glov;
osgUtil::GLObjectsVisitor::Mode mode = glov.getMode();
mode = mode | osgUtil::GLObjectsVisitor::SWITCH_ON_VERTEX_BUFFER_OBJECTS;
mode = mode & ~osgUtil::GLObjectsVisitor::SWITCH_OFF_VERTEX_BUFFER_OBJECTS;
mode = mode & ~osgUtil::GLObjectsVisitor::SWITCH_ON_DISPLAY_LISTS;
glov.setMode(mode);
model->accept(glov);
// Swizzle BGR textures.
SwizzleBGRTexturesVisitor stv;
model->accept(stv);
stv.swizzle();
#endif
// Add the model.
configTransform->addChild(model.get());
return (index);
}
int AR_OSG_EXTDEF arOSGLoadModel2(AROSG *arOsg, const char *modelFilePath, const double translation[3], const double rotation[4], const double scale[3], const int textures)
{
if (!arOsg) return (-1);
#ifdef __EMSCRIPTEN__
if (emscripten_webgl_make_context_current(arOsg->webGLCtx) != EMSCRIPTEN_RESULT_SUCCESS) {
ARLOGw("Error in emscripten_webgl_make_context_current().\n");
};
#endif
osg::ref_ptr<osg::Node> model = nullptr;
// Ask OSG to load the model.
// Check if object file refers to an image.
std::string ext = osgDB::getLowerCaseFileExtension(modelFilePath);
int i = 0;
while (imageExtensions[i] != ext && imageExtensions[i] != "") i++;
if (imageExtensions[i] != "") {
// Attempt to load as image.
//ARLOGd("Reading image file '%s'.\n", modelFilePath);
osg::Image *image = osgDB::readImageFile(modelFilePath);
if (!image) {
ARLOGe("Unable to read model image file '%s'.\n", modelFilePath);
return (-1);
} else {
osg::ref_ptr<osg::Geode> geode = new osg::Geode();
osg::Vec3 pos(0.0f, 0.0f, 0.0f);
float scalef = 80.0f / (image->s() > image->t() ? image->s() : image->t());
geode->addDrawable(myCreateTexturedQuadGeometry(pos, image->s() * scalef, image->t() * scalef, image, false, true, false));
model = geode.get();
}
} else {
// Attempt to load as node.
//ARLOGd("Reading node file '%s'.\n", modelFilePath);
model = osgDB::readNodeFile(modelFilePath);
if (!model.valid()) {
ARLOGe("Unable to read model node file '%s'.\n", modelFilePath);
return (-1);
}
// attach shader program if needed
# if !defined(OSG_GL_FIXED_FUNCTION_AVAILABLE)
if (!textures) {
model->getOrCreateStateSet()->setAttributeAndModes(arOsg->_vertColorProgram, osg::StateAttribute::ON);
} else {
model->getOrCreateStateSet()->setAttributeAndModes(arOsg->_textureProgram, osg::StateAttribute::ON);
}
optimizeNode(model);
//VBOSetupVisitor vbo;
//model->accept(vbo);
# endif
}
return arOSGLoadInternal(arOsg, model, translation, rotation, scale);
}
int AR_OSG_EXTDEF arOSGCreateCubeModel(AROSG *arOsg)
{
if (!arOsg) return (-1);
#ifdef __EMSCRIPTEN__
if (emscripten_webgl_make_context_current(arOsg->webGLCtx) != EMSCRIPTEN_RESULT_SUCCESS) {
ARLOGw("Error in emscripten_webgl_make_context_current().\n");
};
#endif
const double t[3] = {0.0f, 0.0f, 20.0f};
const double s[3] = {40.0f, 40.0f, 40.0f};
int i;
const osg::Vec3f cube_vertices[8] = {
/* +z */ osg::Vec3f(0.5f, 0.5f, 0.5f), osg::Vec3f(0.5f, -0.5f, 0.5f), osg::Vec3f(-0.5f, -0.5f, 0.5f), osg::Vec3f(-0.5f, 0.5f, 0.5f),
/* -z */ osg::Vec3f(0.5f, 0.5f, -0.5f), osg::Vec3f(0.5f, -0.5f, -0.5f), osg::Vec3f(-0.5f, -0.5f, -0.5f), osg::Vec3f(-0.5f, 0.5f, -0.5f) };
const osg::Vec4f cube_vertex_colors[8] = {
osg::Vec4f(1.0f, 1.0f, 1.0f, 1.0f), osg::Vec4f(1.0f, 1.0f, 0.0f, 1.0f), osg::Vec4f(0.0f, 1.0f, 0.0f, 1.0f), osg::Vec4f(0.0f, 1.0f, 1.0f, 1.0f),
osg::Vec4f(1.0f, 0.0f, 1.0f, 1.0f), osg::Vec4f(1.0f, 0.0f, 0.0f, 1.0f), osg::Vec4f(0.0f, 0.0f, 0.0f, 1.0f), osg::Vec4f(0.0f, 0.0f, 1.0f, 1.0f) };
const GLubyte cube_faces[6][4] = { /* ccw-winding */
/* +z */ {3, 2, 1, 0}, /* -y */ {2, 3, 7, 6}, /* +y */ {0, 1, 5, 4},
/* -x */ {3, 0, 4, 7}, /* +x */ {1, 2, 6, 5}, /* -z */ {4, 5, 6, 7} };
osg::ref_ptr<osg::Geode> model = new osg::Geode();
#if defined(OSG_GL_FIXED_FUNCTION_AVAILABLE)
model->getOrCreateStateSet()->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
#else
model->getOrCreateStateSet()->removeDefine("LIGHTING");
#endif
osg::Geometry* facesGeom = new osg::Geometry();
facesGeom->setVertexArray(new osg::Vec3Array(8, (osg::Vec3 *)cube_vertices));
facesGeom->setColorArray(new osg::Vec4Array(8, (osg::Vec4 *)cube_vertex_colors));
facesGeom->setColorBinding(osg::Geometry::BIND_PER_VERTEX);
for (i = 0; i < 6; i++) {
facesGeom->addPrimitiveSet(new osg::DrawElementsUByte(osg::PrimitiveSet::TRIANGLE_FAN, 4, &(cube_faces[i][0])));
}
model->addDrawable(facesGeom);
osg::Geometry* edgesGeom = new osg::Geometry();
edgesGeom->setVertexArray(new osg::Vec3Array(8, (osg::Vec3 *)cube_vertices));
edgesGeom->setColorArray(new osg::Vec4Array(1, (osg::Vec4 *)cube_vertex_colors));
edgesGeom->setColorBinding(osg::Geometry::BIND_OVERALL);
for (i = 0; i < 6; i++) {
edgesGeom->addPrimitiveSet(new osg::DrawElementsUByte(osg::PrimitiveSet::LINE_LOOP, 4, &(cube_faces[i][0])));
}
model->addDrawable(edgesGeom);
# if !defined(OSG_GL_FIXED_FUNCTION_AVAILABLE)
model->getOrCreateStateSet()->setAttributeAndModes(arOsg->_vertColorProgram, osg::StateAttribute::ON);
optimizeNode(model);
//VBOSetupVisitor vbo;
//model->accept(vbo);
#endif
return arOSGLoadInternal(arOsg, model, t, nullptr, s);
}
int AR_OSG_EXTDEF arOSGLoadModel(AROSG *arOsg, const char *modelDescriptionFilePath)
{
FILE *fp;
char buf[MAXPATHLEN], modelFilePath[MAXPATHLEN];
double translation[3], rotation[4], scale[3];
// Read in the .dat file and get model filename, pose and scale.
if ((fp = fopen(modelDescriptionFilePath, "r")) == nullptr) {
ARLOGe("Error: unable to open model description file '%s'.\n", modelDescriptionFilePath);
return (-1);
}
// Read filename.
if (!get_buff(buf, MAXPATHLEN, fp, 1)) {
ARLOGe("Error: unable to read model file name from model description file '%s'.\n", modelDescriptionFilePath);
fclose(fp); return (-1);
}
if (!arUtilGetDirectoryNameFromPath(modelFilePath, modelDescriptionFilePath, sizeof(modelFilePath), 1)) { // Get directory prefix.
fclose(fp); return (-1);
}
strncat(modelFilePath, buf, sizeof(modelFilePath) - strlen(modelFilePath) - 1); // Add name of file to open.
// Read translation.
get_buff(buf, MAXPATHLEN, fp, 1);
if (sscanf(buf, "%lf %lf %lf", &translation[0], &translation[1], &translation[2]) != 3) {
fclose(fp); return (-1);
}
// Read rotation.
get_buff(buf, MAXPATHLEN, fp, 1);
if (sscanf(buf, "%lf %lf %lf %lf", &rotation[0], &rotation[1], &rotation[2], &rotation[3]) != 4) {
fclose(fp); return (-1);
}
// Read scale.
get_buff(buf, MAXPATHLEN, fp, 1);
if (sscanf(buf, "%lf %lf %lf", &scale[0], &scale[1], &scale[2]) != 3) {
fclose(fp); return (-1);
}
// Look for optional tokens. A blank line marks end of options.
int lightingFlag = 1, transparencyFlag = -1, texturesFlag = 0, selectableFlag = 1;
while (get_buff(buf, MAXPATHLEN, fp, 0) && (buf[0] != '\0')) {
if (strncmp(buf, "LIGHTING", 8) == 0) {
if (sscanf(&(buf[8]), " %d", &lightingFlag) != 1) {
ARLOGe("Error in model description file: LIGHTING token must be followed by an integer >= 0. Discarding.\n");
}
} else if (strncmp(buf, "TRANSPARENT", 11) == 0) {
if (sscanf(&(buf[11]), " %d", &transparencyFlag) != 1) {
ARLOGe("Error in model description file: TRANSPARENT token must be followed by an integer >= 0. Discarding.\n");
}
} else if (strncmp(buf, "TEXTURES", 8) == 0) {
if (sscanf(&(buf[8]), " %d", &texturesFlag) != 1) {
ARLOGe("Error in model description file: TEXTURES token must be followed by an integer >= 0. Discarding.\n");
}
} else if (strncmp(buf, "SELECTABLE", 10) == 0) {
if (sscanf(&(buf[10]), " %d", &selectableFlag) != 1) {
ARLOGe("Error in model description file: SELECTABLE token must be followed by an integer >= 0. Discarding.\n");
}
}
// Unknown tokens are ignored.
}
fclose(fp);
int index = arOSGLoadModel2(arOsg, modelFilePath, translation, rotation, scale, texturesFlag);
if (index >= 0) {
if (lightingFlag != -1) arOSGSetModelLighting(arOsg, index, lightingFlag);
if (transparencyFlag != -1) arOSGSetModelTransparency(arOsg, index, transparencyFlag);
if (selectableFlag != -1) arOSGSetModelSelectable(arOsg, index, selectableFlag);
}
return (index);
}
int AR_OSG_EXTDEF arOSGCreateDEMModel(AROSG *arOsg, const char *demFilePath, const float scaleFactor, const float heightExaggerationFactor)
{
if (!arOsg) return (-1);
#ifdef __EMSCRIPTEN__
if (emscripten_webgl_make_context_current(arOsg->webGLCtx) != EMSCRIPTEN_RESULT_SUCCESS) {
ARLOGw("Error in emscripten_webgl_make_context_current().\n");
};
#endif
osg::NotifySeverity nl = osg::getNotifyLevel();
osg::setNotifyLevel(osg::DEBUG_INFO);
osg::ref_ptr<osg::HeightField> hf = osgDB::readRefHeightFieldFile(std::string(demFilePath) + std::string(".gdal"));
if (!hf.valid())
{
ARLOGe("Unable to read DEM file '%s'.\n", demFilePath);
return (-1);
}
// Origin is bottom-left.
ARLOGi("%dx%d heightfield loaded: Xinterval:%f, Yinterval:%f, Origin:{%f, %f, %f}, Rotation:{%f, %f, %f, %f}, SkirtHeight:%f, BorderWidth:%d\n", hf->getNumColumns(), hf->getNumRows(), hf->getXInterval(), hf->getYInterval(), hf->getOrigin().x(), hf->getOrigin().y(), hf->getOrigin().z(), hf->getRotation().x(), hf->getRotation().y(), hf->getRotation().z(), hf->getRotation().w(), hf->getSkirtHeight(), hf->getBorderWidth());
hf->setXInterval(hf->getXInterval()/scaleFactor);
hf->setYInterval(hf->getYInterval()/scaleFactor);
float xsize = hf->getNumColumns()*hf->getXInterval();
float ysize = hf->getNumRows()*hf->getYInterval();
hf->setOrigin(osg::Vec3f(-0.5f*xsize, -0.5f*ysize, 0.0f));
hf->setSkirtHeight(0.05f * fmaxf(xsize, ysize));
osg::FloatArray* heights = hf->getFloatArray();
for (auto& f : *heights) f = f /scaleFactor * heightExaggerationFactor;
osg::ref_ptr<osg::Geode> model = new osg::Geode();
#if defined(OSG_GL_FIXED_FUNCTION_AVAILABLE)
model->getOrCreateStateSet()->setMode(GL_LIGHTING, osg::StateAttribute::ON);
#else
model->getOrCreateStateSet()->setDefine("LIGHTING");
#endif
model->addDrawable(new osg::ShapeDrawable(hf.get()));
osg::setNotifyLevel(nl);
# if !defined(OSG_GL_FIXED_FUNCTION_AVAILABLE)
model->getOrCreateStateSet()->setAttributeAndModes(arOsg->_vertColorProgram, osg::StateAttribute::ON);
optimizeNode(model);
//VBOSetupVisitor vbo;
//model->accept(vbo);
#endif
return arOSGLoadInternal(arOsg, model, nullptr, nullptr, nullptr);
}
int AR_OSG_EXTDEF arOSGUnloadModel(AROSG *arOsg, const int index)
{
if (!arOsg) return (-1);
#ifdef __EMSCRIPTEN__
if (emscripten_webgl_make_context_current(arOsg->webGLCtx) != EMSCRIPTEN_RESULT_SUCCESS) {
ARLOGw("Error in emscripten_webgl_make_context_current().\n");
};
#endif
if (index < 0 || index >= arOsg->maxModels) return (-1);
if (!arOsg->models[index]) {
ARLOGe("Error: model not found while attempting to unload a model.\n");
return (-1);
}
arOsg->sg->removeChild(arOsg->models[index].get());
arOsg->models[index] = nullptr; // This will delete the model, through the ref_ptr template's methods.
return (0);
}
int AR_OSG_EXTDEF arOSGSetModelVisibility(AROSG *arOsg, const int index, const int visible)
{
if (!arOsg) return (-1);
#ifdef __EMSCRIPTEN__
if (emscripten_webgl_make_context_current(arOsg->webGLCtx) != EMSCRIPTEN_RESULT_SUCCESS) {
ARLOGw("Error in emscripten_webgl_make_context_current().\n");
};
#endif
if (index < 0 || index >= arOsg->maxModels) return (-1);
if (!arOsg->models[index]) {
ARLOGe("Error: model not found while attempting to set model visibility.\n");
return (-1);
}
arOsg->models[index]->setNodeMask(visible ? 0xffffffff : 0x0);
return (0);
}
int AR_OSG_EXTDEF arOSGGetModelVisibility(AROSG *arOsg, const int index, int *visible)
{
if (!arOsg || !visible) return (-1);
#ifdef __EMSCRIPTEN__
if (emscripten_webgl_make_context_current(arOsg->webGLCtx) != EMSCRIPTEN_RESULT_SUCCESS) {
ARLOGw("Error in emscripten_webgl_make_context_current().\n");
};
#endif
if (index < 0 || index >= arOsg->maxModels) return (-1);
if (!arOsg->models[index]) {
ARLOGe("Error: model not found while attempting to get model visibility.\n");
return (-1);
}
*visible = (arOsg->models[index]->getNodeMask() != 0x0);
return (0);
}
int AR_OSG_EXTDEF arOSGSetModelLighting(AROSG *arOsg, const int index, const int lit)
{
if (!arOsg) return (-1);
#ifdef __EMSCRIPTEN__
if (emscripten_webgl_make_context_current(arOsg->webGLCtx) != EMSCRIPTEN_RESULT_SUCCESS) {
ARLOGw("Error in emscripten_webgl_make_context_current().\n");
};
#endif
if (index < 0 || index >= arOsg->maxModels) return (-1);
if (!arOsg->models[index]) {
ARLOGe("Error: model not found while attempting to set model lighting.\n");
return (-1);
}
#if defined(OSG_GL_FIXED_FUNCTION_AVAILABLE)
arOsg->models[index]->getOrCreateStateSet()->setMode(GL_LIGHTING, (lit ? osg::StateAttribute::ON : osg::StateAttribute::OFF));
#else
if (lit) {
arOsg->models[index]->getOrCreateStateSet()->setDefine("LIGHTING");
} else {
arOsg->models[index]->getOrCreateStateSet()->removeDefine("LIGHTING");
}
#endif
return (0);
}
int AR_OSG_EXTDEF arOSGGetModelLighting(AROSG *arOsg, const int index, int *lit)
{
if (!arOsg || !lit) return (-1);
#ifdef __EMSCRIPTEN__
if (emscripten_webgl_make_context_current(arOsg->webGLCtx) != EMSCRIPTEN_RESULT_SUCCESS) {
ARLOGw("Error in emscripten_webgl_make_context_current().\n");
};
#endif
if (index < 0 || index >= arOsg->maxModels) return (-1);
if (!arOsg->models[index]) {
ARLOGe("Error: model not found while attempting to get model lighting.\n");
return (-1);
}
#if defined(OSG_GL_FIXED_FUNCTION_AVAILABLE)
*lit = (arOsg->models[index]->getOrCreateStateSet()->getMode(GL_LIGHTING) != osg::StateAttribute::OFF);
#else
*lit = (arOsg->models[index]->getOrCreateStateSet()->getDefinePair("LIGHTING") != 0);
#endif
return (0);
}
int AR_OSG_EXTDEF arOSGSetModelTransparency(AROSG *arOsg, const int index, const int transparent)
{
if (!arOsg) return (-1);
#ifdef __EMSCRIPTEN__
if (emscripten_webgl_make_context_current(arOsg->webGLCtx) != EMSCRIPTEN_RESULT_SUCCESS) {
ARLOGw("Error in emscripten_webgl_make_context_current().\n");
};
#endif
if (index < 0 || index >= arOsg->maxModels) return (-1);
if (!arOsg->models[index]) {
ARLOGe("Error: model not found while attempting to set model transparency.\n");
return (-1);
}
osg::StateSet *ss = arOsg->models[index]->getOrCreateStateSet();
//osg::ref_ptr<osg::BlendFunc> texture_blending_function = new osg::BlendFunc(osg::BlendFunc::SRC_ALPHA, osg::BlendFunc::ONE_MINUS_SRC_ALPHA);
//ss->setAttributeAndModes(texture_blending_function.get(), osg::StateAttribute::ON);
ss->setMode(GL_BLEND, (transparent ? osg::StateAttribute::ON : osg::StateAttribute::OFF));
ss->setRenderingHint(transparent ? osg::StateSet::TRANSPARENT_BIN: osg::StateSet::OPAQUE_BIN);
return (0);
}
int AR_OSG_EXTDEF arOSGSetModelAnimationPause(AROSG *arOsg, const int index, const int pause)
{
if (!arOsg) return (-1);
#ifdef __EMSCRIPTEN__
if (emscripten_webgl_make_context_current(arOsg->webGLCtx) != EMSCRIPTEN_RESULT_SUCCESS) {
ARLOGw("Error in emscripten_webgl_make_context_current().\n");
};
#endif
if (index < 0 || index >= arOsg->maxModels) return (-1);
if (!arOsg->models[index]) {
ARLOGe("Error: model not found while attempting to set model animation pause.\n");
return (-1);
}
ManageAnimationNodesVisitor manv;
arOsg->models[index]->accept(manv);
manv.setPause((pause ? true : false), arOsg->viewer->getFrameStamp()->getSimulationTime());
return (0);
}
int AR_OSG_EXTDEF arOSGGetModelAnimationTime(AROSG *arOsg, const int index, double *animationTime)
{
if (!arOsg || !animationTime) return (-1);
#ifdef __EMSCRIPTEN__
if (emscripten_webgl_make_context_current(arOsg->webGLCtx) != EMSCRIPTEN_RESULT_SUCCESS) {
ARLOGw("Error in emscripten_webgl_make_context_current().\n");
};
#endif
if (index < 0 || index >= arOsg->maxModels) return (-1);
if (!arOsg->models[index]) {
ARLOGe("Error: model not found while attempting to get model animation time.\n");
return (-1);
}
ManageAnimationNodesVisitor manv;
arOsg->models[index]->accept(manv);
*animationTime = manv.getAnimationTime();
return (0);
}
int AR_OSG_EXTDEF arOSGSetModelAnimationReset(AROSG *arOsg, const int index)
{
if (!arOsg) return (-1);
#ifdef __EMSCRIPTEN__
if (emscripten_webgl_make_context_current(arOsg->webGLCtx) != EMSCRIPTEN_RESULT_SUCCESS) {
ARLOGw("Error in emscripten_webgl_make_context_current().\n");
};
#endif
if (index < 0 || index >= arOsg->maxModels) return (-1);
if (!arOsg->models[index]) {
ARLOGe("Error: model not found while attempting to reset model animation.\n");
return (-1);
}
ResetAnimationNodesVisitor ranv;
arOsg->models[index]->accept(ranv);
return (0);
}
int AR_OSG_EXTDEF arOSGSetModelAnimationLoopModeOverride(AROSG *arOsg, const int index, const int mode)
{
if (!arOsg) return (-1);
#ifdef __EMSCRIPTEN__
if (emscripten_webgl_make_context_current(arOsg->webGLCtx) != EMSCRIPTEN_RESULT_SUCCESS) {
ARLOGw("Error in emscripten_webgl_make_context_current().\n");
};
#endif
if (index < 0 || index >= arOsg->maxModels) return (-1);
if (!arOsg->models[index]) {
ARLOGe("Error: model not found while attempting to set model animation loop mode override.\n");
return (-1);
}
ManageAnimationNodesVisitor manv;
arOsg->models[index]->accept(manv);
if (mode == 0) manv.setLoopMode(osg::AnimationPath::NO_LOOPING);
else if (mode == 1) manv.setLoopMode(osg::AnimationPath::LOOP);
else if (mode == 2) manv.setLoopMode(osg::AnimationPath::SWING);