C++ Vec3f::data方法代码示例

int main(int argc, char **argv)
{


	// interface:
	QApplication app(argc, argv);
	MyQT sqt;

	if (argc>1)
		sqt.NBP = atoi(argv[1]);


	sqt.setHelpMsg("Param :size of grid (number of objects)\nMpuse (with shift):\n"
			" -click on object: selection\n -left click on frame: constraint 3d Rotation/Translation/Scale\n"
			" -right click on frame :free 2D Rotation/Translation\nKeys:\n  x/y/z lock/unlock translation\n  a/b/c lock/unlock rotation\n   s/t/u lock/unlock scaling");

    //  bounding box
    Geom::Vec3f lPosObj = Geom::Vec3f(0.0f,0.0f,0.0f);
    float lWidthObj = sqt.NBP*4.0f;

    // envoit info BB a l'interface
	sqt.setParamObject(lWidthObj,lPosObj.data());

	// show final pour premier redraw
	sqt.show();

	// et on attend la fin.
	return app.exec();

	return 0;
}

void ShaderPhong::setLightPosition(const Geom::Vec3f& lightPos)
{
    bind();
    glUniform3fv(*m_unif_lightPos,1,lightPos.data());
    m_lightPos = lightPos;
    unbind();
}

void ShaderExplodeSmoothVolumes::setLightPosition(const Geom::Vec3f& lp)
{
	m_light_pos = lp;
	bind();
	glUniform3fv(*m_unif_lightPos,1,lp.data());
	unbind();
}

void MyQT::createMap()
{
//	Dart d1 = Algo::Modelisation::createTetrahedron<PFP>(myMap);

//	Dart d2 = d1;

	position = myMap.addAttribute<PFP::VEC3, VERTEX>("position");

	Algo::Modelisation::Polyhedron<PFP> prim1(myMap, position);
	prim1.cylinder_topo(256, 256, true, true); // topo of sphere is a closed cylinder
	prim1.embedSphere(2.0f);

//	Dart d2 = d1;
//	position[d2] = PFP::VEC3(1, 0, 0);
//	d2 = PHI1(d2);
//	position[d2] = PFP::VEC3(-1, 0, 0);
//	d2 = PHI1(d2);
//	position[d2] = PFP::VEC3(0, 2, 0);
//	d2 = PHI<211>(d2);
//	position[d2] = PFP::VEC3(0, 1, 2);

	Algo::Modelisation::Polyhedron<PFP> prim2(myMap, position);
	prim2.cylinder_topo(256, 256, true, true); // topo of sphere is a closed cylinder
	prim2.embedSphere(2.0f);

	Geom::Matrix44f trf;
	trf.identity();
	Geom::translate<float>(5.0f, 0.0, 0.0, trf);
	prim2.transform(trf);

	xd1 = prim2.getDart();

//	xd1 = Algo::Modelisation::Polyhedron<PFP>::createTetra(myMap);
//	Dart xd2 = xd1;
//
//	position[xd2] = PFP::VEC3(5, 0, 0);
//	xd2 = PHI1(xd2);
//	position[xd2] = PFP::VEC3(3, 0, 0);
//	xd2 = PHI1(xd2);
//	position[xd2] = PFP::VEC3(4, 2, 0);
//	xd2 = PHI<211>(xd2);
//	position[xd2] = PFP::VEC3(4, 1, 2);

    //  bounding box of scene
    Geom::BoundingBox<PFP::VEC3> bb = Algo::Geometry::computeBoundingBox<PFP>(myMap, position);
    float lWidthObj = std::max<PFP::REAL>(std::max<PFP::REAL>(bb.size(0), bb.size(1)), bb.size(2));
    Geom::Vec3f lPosObj = (bb.min() +  bb.max()) / PFP::REAL(2);

    // send BB info to interface for centering on GL screen
	setParamObject(lWidthObj, lPosObj.data());

	// first show for be sure that GL context is binded
	show();

	// render the topo of the map without boundary darts
	SelectorDartNoBoundary<PFP::MAP> nb(myMap);
	m_render_topo->updateData<PFP>(myMap, position, 0.9f, 0.9f,nb);
}

void ShaderPhong::setEyePosition(const Geom::Vec3f& eyePos)
{
    if (m_with_eyepos)
    {
        bind();
        glUniform3fv(*m_unif_eyePos,1,eyePos.data());
        m_eyePos = eyePos;
        unbind();
    }
}

void ShaderExplodeSmoothVolumes::setParams(float explV, float explF, const Geom::Vec4f& ambiant, const Geom::Vec3f& lightPos, const Geom::Vec4f& plane)
{
	bind();
	m_explodeV = explV;
	glUniform1f(*m_unif_explodeV, explV);
	m_explodeF = explF;
	glUniform1f(*m_unif_explodeF, explF);
	m_ambiant = ambiant;
	glUniform4fv(*m_unif_ambiant, 1, ambiant.data());
	m_light_pos = lightPos;
	glUniform3fv(*m_unif_lightPos, 1, lightPos.data());

	m_plane = plane;
	glUniform4fv(*m_unif_plane,    1, m_plane.data());

	unbind();
}

void MyQT::createMap()
{
	// creation of a new attribute on vertices of type 3D vector for position.
	// a handler to this attribute is returned
	position = myMap.addAttribute<VEC3, VERTEX, MAP>("position");

	// creation of 2 new faces: 1 triangle and 1 square
	Dart d1 = myMap.newFace(3);
	Dart d2 = myMap.newFace(4);

	// sew these faces along one of their edge
	myMap.sewFaces(d1, d2);

	// affect position by moving in the map
	position[d1] = VEC3(0, 0, 0);
	position[PHI1(d1)] = VEC3(2, 0, 0);
	position[PHI_1(d1)] = VEC3(1, 2, 0);
	position[PHI<11>(d2)] = VEC3(0, -2, 0);
	position[PHI_1(d2)] = VEC3(2, -2, 0);

    //  bounding box of scene
    Geom::BoundingBox<PFP::VEC3> bb = Algo::Geometry::computeBoundingBox<PFP>(myMap, position);
    float lWidthObj = std::max<PFP::REAL>(std::max<PFP::REAL>(bb.size(0), bb.size(1)), bb.size(2));
    Geom::Vec3f lPosObj = (bb.min() +  bb.max()) / PFP::REAL(2);

	show();
    // send BB info to interface for centering on GL screen
	setParamObject(lWidthObj, lPosObj.data());

	// first show for be sure that GL context is binded
	show();

	// render the topo of the map without boundary darts
	m_render_topo->setInitialBoundaryDartsColor(0,1,0);
	m_render_topo->updateDataGMap<PFP>(myMap, position, 0.9f, 0.9f,true);
}

//.........这里部分代码省略.........
		float alpha = (4.0f*6.283f / NB)*i;
		float radius = 1.2f*(NB-i);
		position[d3] = PFP::VEC3(radius*cos(alpha) -  2*NB+8, radius*sin(alpha), z);
		d3 = myMap.phi1(d3);
	}

	for (int i = NB-1; i>=0; --i)
	{
		float z = 3.0f*float(rand()-RAND_MAX/2)/float(RAND_MAX);
		float alpha = (4.0f*6.283f / NB)*i;
		float radius = (NB-i);
		position[d3] = PFP::VEC3(radius*cos(alpha) -  2*NB+8, radius*sin(alpha), z);
		d3 = myMap.phi1(d3);
	}

	//CIRCLE

	Dart d6 = myMap.newFace(NB);
	for (int i = 0; i<NB; ++i)
	{
		float z = 3.0f*float(rand()-RAND_MAX/2)/float(RAND_MAX);
		float alpha = (6.283f / NB)*i;
		float radius = NB;
		position[d6] = PFP::VEC3(radius*cos(alpha) + 2*NB+8, radius*sin(alpha), z);
		d6 = myMap.phi1(d6);
	}

// pour comparer les 2 versions (oreille et basique)
//#define NBB 100
//	for (int j = 0; j<10000; ++j)
//	{
//		Dart d6 = myMap.newFace(NBB);
//		for (int i = 0; i<NBB; ++i)
//		{
//			float alpha = (6.283f / NB)*i;
//			float radius = NB;
//			position[d6] = PFP::VEC3(radius*cos(alpha) + 2*NB+8, radius*sin(alpha), 0.1f*j);
//			d6 = myMap.phi1(d6);
//		}
//	}

	Geom::Vec3f V1(3,3,3);
	V1.normalize();
	Geom::Vec3f V2 = V1 ^ Geom::Vec3f(0,0,-1);
	Geom::Vec3f V3 = V1 ^ V2;

	V1 *= 50.0f;
	V2 *= 50.0f;

	Dart d5 = myMap.newFace(74);
	for (int i=0; i<74;++i)
	{
		float a = float(rand()-RAND_MAX/2)/float(RAND_MAX) * 0.25f;
		position[d5] = PFP::VEC3(0.0,60.0,0.0f) + Ifont[2*i] * V1 + Ifont[2*i+1]*V2 + a*V3;
		d5 = myMap.phi1(d5);
	}
	Dart d9 = myMap.newFace(174);
	for (int i=0; i<174;++i)
	{
		float a = float(rand()-RAND_MAX/2)/float(RAND_MAX) * 0.25f;
		position[d9] = PFP::VEC3(60.0,60.0,0.0f) + Gfont[2*i] * V1 + Gfont[2*i+1]*V2 + a*V3;
		d9 = myMap.phi1(d9);
	}

	// interface:
	QApplication app(argc, argv);
	MyQT sqt;


	// message d'aide
	sqt.setHelpMsg("Concave face rendering (ears method):\n"
			"a show all trianglesfaces\n"
			"a show none trianglesfaces\n"
			"+ / - show trinagles order rendering (ears creation)");

    //  bounding box
    Geom::BoundingBox<PFP::VEC3> bb = Algo::Geometry::computeBoundingBox<PFP>(myMap, position);
    float lWidthObj = std::max<PFP::REAL>(std::max<PFP::REAL>(bb.size(0), bb.size(1)), bb.size(2));
    Geom::Vec3f lPosObj = (bb.min() +  bb.max()) / PFP::REAL(2);

    // envoit info BB a l'interface
	sqt.setParamObject(lWidthObj, lPosObj.data());

	// show 1 pour GL context
	sqt.show();

	// update du VBO position (context GL necessaire)
	sqt.m_positionVBO->updateData(position);

	// update des primitives du renderer
	sqt.m_render->initPrimitives<PFP>(myMap, allDarts, Algo::Render::GL2::TRIANGLES, &position);
	sqt.m_render->initPrimitives<PFP>(myMap, allDarts, Algo::Render::GL2::LINES, &position);
	sqt.m_render->initPrimitives<PFP>(myMap, allDarts, Algo::Render::GL2::POINTS, &position);

//	 show final pour premier redraw
	sqt.show();

	// et on attend la fin.
	return app.exec();
}