Gabriele Cosmo
105 lines
2.6 KiB
Plaintext
105 lines
2.6 KiB
Plaintext
// Copyright (C) 2010, Guy Barrand. All rights reserved.
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// See the file tools.license for terms.
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#ifndef tools_sg_mnmx
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#define tools_sg_mnmx
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#include "node"
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#include "bbox_action"
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namespace tools {
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inline bool mnmx(std::ostream& a_out,sg::node& a_node,vec3f& a_mn,vec3f& a_mx){
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sg::bbox_action action(a_out);
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a_node.bbox(action);
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if(!action.end() || action.box().is_empty()) {
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a_out << "tools::mnmx :"
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<< " bbox problem."
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<< std::endl;
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a_mn.set_value(0,0,0);
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a_mx.set_value(0,0,0);
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return false;
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}
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a_mn = action.box().mn();
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a_mx = action.box().mx();
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return true;
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}
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}
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#include "matrix"
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namespace tools {
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inline bool center_adjust(std::ostream& a_out,
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sg::node& a_node,sg::matrix& a_tsf,
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unsigned int a_ww,unsigned int a_wh,
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float a_height,
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float& a_dx,float& a_dy,float& a_dz,
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bool a_verbose = true) {
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//NOTE : we assume an ortho camera.
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if(!a_ww||!a_wh) {
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if(a_verbose) {
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a_out << "tools::center_adjust :"
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<< " null viewer width or height."
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<< std::endl;
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}
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a_dx = 0;a_dy = 0;a_dz = 0;
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return false;
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}
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sg::bbox_action _action(a_out);
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a_node.bbox(_action);
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if(!_action.box().get_size(a_dx,a_dy,a_dz)) {
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if(a_verbose) {
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a_out << "tools::center_adjust :"
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<< " empty box."
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<< std::endl;
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}
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a_dx = 0;a_dy = 0;a_dz = 0;
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return false;
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}
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if(!a_dx||!a_dy) {
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if(a_verbose) {
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a_out << "tools::center_adjust :"
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<< " dx or dy null."
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<< std::endl;
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}
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a_dx = 0;a_dy = 0;a_dz = 0;
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return false;
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}
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vec3f c;
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if(!_action.box().center(c)) {
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if(a_verbose) {
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a_out << "tools::center_adjust :"
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<< " can't get box center."
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<< std::endl;
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}
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a_dx = 0;a_dy = 0;a_dz = 0;
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return false;
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}
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float vp_aspect = float(a_ww)/float(a_wh);
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float scene_aspect = float(a_dx)/float(a_dy);
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float scale;
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if(vp_aspect>=scene_aspect) {
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scale = a_height/a_dy;
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} else {
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scale = (vp_aspect*a_height)/a_dx;
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}
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a_tsf.set_scale(scale,scale,scale);
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a_tsf.mul_translate(-c.x(),-c.y(),0);
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return true;
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}
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inline bool center_adjust(std::ostream& a_out,
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sg::node& a_node,sg::matrix& a_tsf,
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unsigned int a_ww,unsigned int a_wh,
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float a_height,bool a_verbose = true) {
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float dx,dy,dz;
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return center_adjust(a_out,a_node,a_tsf,a_ww,a_wh,a_height,
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dx,dy,dz,a_verbose);
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}
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}
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#endif
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