/********************************************************************** * * * tgt - Tiny Graphics Toolbox * * * * Copyright (C) 2006-2011 Visualization and Computer Graphics Group, * * Department of Computer Science, University of Muenster, Germany. * * * * * * This file is part of the tgt library. This library is free * * software; you can redistribute it and/or modify it under the terms * * of the GNU Lesser General Public License version 2.1 as published * * by the Free Software Foundation. * * * * This library 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 in the file "LICENSE.txt" along with this library. * * If not, see . * * * **********************************************************************/ #include "cgt/bounds.h" #include #include "cgt/assert.h" namespace tgt { using std::min; using std::max; void Bounds::addPoint(const Vector& v) { if (points_ < 2) { ++points_; if (points_ == 1) { llf_ = v; urb_ = v; return; } } llf_ = min(llf_, v); urb_ = max(urb_, v); } bool Bounds::insideXZ(const Bounds& bounds) const { tgtAssert( isDefined(), "This Box ist not defined."); tgtAssert(bounds.isDefined(), "Box b ist not defined."); vec3 llfb = bounds.getLLF(); vec3 urbb = bounds.getURB(); float r0x = min(llf_[0], urb_[0]); float r1x = max(llf_[0], urb_[0]); float r0y = min(llf_[2], urb_[2]); float r1y = max(llf_[2], urb_[2]); float r2x = min(llfb[0], urbb[0]); float r3x = max(llfb[0], urbb[0]); float r2y = min(llfb[2], urbb[2]); float r3y = max(llfb[2], urbb[2]); return (r0x >= r2x) && (r0y >= r2y) && (r1x <= r3x) && (r1y <= r3y); } bool Bounds::insideXZ(const vec3& v) const { tgtAssert( isDefined(), "This Box ist not defined."); return (llf_[0] <= v[0]) && (v[0] <= urb_[0]) && (llf_[2] <= v[2]) && (v[2] <= urb_[2]); } bool Bounds::inside(const Bounds& bounds) const { tgtAssert( isDefined(), "This Box ist not defined."); tgtAssert(bounds.isDefined(), "Box b ist not defined."); vec3 llfb = bounds.getLLF(); vec3 urbb = bounds.getURB(); float r0x = min(llf_[0], urb_[0]); float r1x = max(llf_[0], urb_[0]); float r0y = min(llf_[1], urb_[1]); float r1y = max(llf_[1], urb_[1]); float r0z = min(llf_[2], urb_[2]); float r1z = max(llf_[2], urb_[2]); float r2x = min(llfb[0], urbb[0]); float r3x = max(llfb[0], urbb[0]); float r2y = min(llfb[1], urbb[1]); float r3y = max(llfb[1], urbb[1]); float r2z = min(llfb[2], urbb[2]); float r3z = max(llfb[2], urbb[2]); return (r0x >= r2x) && (r1x <= r3x) && (r0y >= r2y) && (r1y <= r3y) && (r0z >= r2z) && (r1z <= r3z); } bool Bounds::inside(const vec3& v) const { tgtAssert( isDefined(), "This Box ist not defined."); return (llf_[0] <= v[0]) && (v[0] <= urb_[0]) && (llf_[1] <= v[1]) && (v[1] <= urb_[1]) && (llf_[2] <= v[2]) && (v[2] <= urb_[2]); } Bounds Bounds::transform(const mat4& m) const { Bounds b; b.addPoint(m * vec3(llf_.x, llf_.y, llf_.z)); b.addPoint(m * vec3(urb_.x, llf_.y, llf_.z)); b.addPoint(m * vec3(llf_.x, urb_.y, llf_.z)); b.addPoint(m * vec3(llf_.x, llf_.y, urb_.z)); b.addPoint(m * vec3(urb_.x, urb_.y, llf_.z)); b.addPoint(m * vec3(llf_.x, urb_.y, urb_.z)); b.addPoint(m * vec3(urb_.x, llf_.y, urb_.z)); b.addPoint(m * vec3(urb_.x, urb_.y, urb_.z)); return b; } /// ostream-operator std::ostream& operator<< (std::ostream& o, const Bounds& b) { return (o << "(llf: " << b.getLLF() << " urb: " << b.getURB() << ")"); } } // namespace