Gabriele Cosmo
100 lines
2.8 KiB
Plaintext
100 lines
2.8 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_set_plotter_camera
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#define tools_sg_set_plotter_camera
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#include "plotter"
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#include "ortho"
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namespace tools {
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namespace sg {
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inline void set_plotter_camera(plotter& a_plotter,tools::sg::ortho& a_camera,unsigned int a_ww,unsigned int a_wh) {
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if(!a_ww || !a_wh) return;
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//PAW logic :
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{float xfac = 1.0F/20.0F; //0.05
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float yfac = 1.0F/20.0F; //0.05
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float XSIZ = 20 * xfac; //1 //page width
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float YSIZ = 20 * yfac; //1 //page height
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float zfac = 1.0F/20.0F; //0.05
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float ZSIZ = 20 * zfac; //1 //page depth
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a_plotter.width.value(XSIZ);
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a_plotter.height.value(YSIZ);
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a_plotter.depth.value(ZSIZ);}
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enum plotter_viewport_mapping {
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pvp_adjust_viewport,
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pvp_leave_alone
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};
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plotter_viewport_mapping pvp = pvp_adjust_viewport;
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//plotter_viewport_mapping pvp = pvp_leave_alone;
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typedef plotter::shape_type st_t;
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st_t plotter_shape = plotter::xy;
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float aspect = float(a_ww)/float(a_wh);
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{float XSIZ = a_plotter.width.value();
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float YSIZ = a_plotter.height.value();
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if((plotter_shape==plotter::xy) &&
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(pvp==pvp_adjust_viewport)) {
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// Adjust the plotter XSIZ and YSIZ so that YSIZ matches viewport height
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// and plotter XSIZ matches viewport width.
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// It it the CERN-ROOT and osc-plot logic.
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if(aspect>=1) { //w>h
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//Camera must match in height YSIZ. Adjust XSIZ.
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a_plotter.width.value(YSIZ * aspect);
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} else {
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//Camera must match in width XSIZ. Adjust YSIZ.
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a_plotter.height.value(XSIZ / aspect);
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}
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}}
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{float camera_znear = 0;
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float camera_zfar = 0;
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float camera_z_pos = 0;
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// if camera ortho :
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float camera_height = 0;
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float XSIZ = a_plotter.width.value();
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float YSIZ = a_plotter.height.value();
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float z = 4 * a_plotter.depth.value();
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camera_z_pos = z;
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camera_znear = 0.01F*z;
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camera_zfar = 100*z;
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//cam ortho :
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if(plotter_shape==plotter::xyz) {
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camera_height = YSIZ;
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} else {
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if(pvp==pvp_leave_alone) {
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// Adjust camera so that plotter XSIZ/YSIZ be not distorded.
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// If viewport aspect ratio > plotter aspect ratio
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// the plotter YSIZ matches the viewport height. If not
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// it is the plotter XSIZ that will match the viewport width.
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// It is the PAW logic for one region.
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float plotterAspect = XSIZ/YSIZ;
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if(aspect<plotterAspect) {
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camera_height = XSIZ / aspect;
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} else {
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camera_height = YSIZ;
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}
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} else if(pvp==pvp_adjust_viewport) {
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camera_height = YSIZ;
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}
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}
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a_camera.height.value(camera_height);
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a_camera.znear.value(camera_znear);
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a_camera.zfar.value(camera_zfar);
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a_camera.position.value(tools::vec3f(0,0,camera_z_pos));
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a_camera.orientation.value(tools::rotf(tools::vec3f(0,0,1),0));}
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}
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}}
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#endif
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