nuclear@12: /*
nuclear@12: glviewvol is an OpenGL 3D volume data viewer
nuclear@12: Copyright (C) 2014  John Tsiombikas <nuclear@member.fsf.org>
nuclear@12: 
nuclear@12: This program is free software: you can redistribute it and/or modify
nuclear@12: it under the terms of the GNU General Public License as published by
nuclear@12: the Free Software Foundation, either version 3 of the License, or
nuclear@12: (at your option) any later version.
nuclear@12: 
nuclear@12: This program is distributed in the hope that it will be useful,
nuclear@12: but WITHOUT ANY WARRANTY; without even the implied warranty of
nuclear@12: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
nuclear@12: GNU General Public License for more details.
nuclear@12: 
nuclear@12: You should have received a copy of the GNU General Public License
nuclear@12: along with this program.  If not, see <http://www.gnu.org/licenses/>.
nuclear@12: */
nuclear@4: #include <math.h>
nuclear@0: #include "renderer.h"
nuclear@0: 
nuclear@0: Renderer::Renderer()
nuclear@0: {
nuclear@0: 	vol = 0;
nuclear@0: 	view_width = 512;
nuclear@0: 	view_height = 512;
nuclear@4: 
nuclear@4: 	for(int i=0; i<MAX_CLIP_PLANES; i++) {
nuclear@4: 		disable_clipping_plane(i);
nuclear@4: 	}
nuclear@10: 
nuclear@10: 	zscale = 1.0;
nuclear@0: }
nuclear@0: 
nuclear@0: Renderer::~Renderer()
nuclear@0: {
nuclear@0: 	destroy();
nuclear@0: }
nuclear@0: 
nuclear@0: bool Renderer::init()
nuclear@0: {
nuclear@0: 	return true;
nuclear@0: }
nuclear@0: 
nuclear@0: void Renderer::destroy()
nuclear@0: {
nuclear@0: }
nuclear@0: 
nuclear@0: void Renderer::set_volume(Volume *vol)
nuclear@0: {
nuclear@0: 	this->vol = vol;
nuclear@0: }
nuclear@0: 
nuclear@0: Volume *Renderer::get_volume() const
nuclear@0: {
nuclear@0: 	return vol;
nuclear@0: }
nuclear@0: 
nuclear@10: void Renderer::set_zscale(float zs)
nuclear@10: {
nuclear@10: 	zscale = zs;
nuclear@10: }
nuclear@10: 
nuclear@10: float Renderer::get_zscale() const
nuclear@10: {
nuclear@10: 	return zscale;
nuclear@10: }
nuclear@10: 
nuclear@6: void Renderer::set_transfer_function(TransferFunc *xfer)
nuclear@4: {
nuclear@6: 	this->xfer = xfer;
nuclear@4: }
nuclear@4: 
nuclear@6: TransferFunc *Renderer::get_transfer_function() const
nuclear@4: {
nuclear@6: 	return xfer;
nuclear@5: }
nuclear@5: 
nuclear@4: void Renderer::set_clipping_plane(int idx, float nx, float ny, float nz, float dist)
nuclear@4: {
nuclear@4: 	float len = sqrt(nx * nx + ny * ny + nz * nz);
nuclear@4: 	if(len != 0.0) {
nuclear@4: 		nx /= len;
nuclear@4: 		ny /= len;
nuclear@4: 		nz /= len;
nuclear@4: 	}
nuclear@4: 	clip_plane[idx][0] = nx;
nuclear@4: 	clip_plane[idx][1] = ny;
nuclear@4: 	clip_plane[idx][2] = nz;
nuclear@4: 	clip_plane[idx][3] = dist;
nuclear@4: }
nuclear@4: 
nuclear@4: void Renderer::disable_clipping_plane(int idx)
nuclear@4: {
nuclear@4: 	clip_plane[idx][0] = clip_plane[idx][2] = 0;
nuclear@4: 	clip_plane[idx][1] = 1;
nuclear@4: 	clip_plane[idx][3] = -1;
nuclear@4: }
nuclear@4: 
nuclear@0: void Renderer::reshape(int x, int y)
nuclear@0: {
nuclear@0: 	view_width = x;
nuclear@0: 	view_height = y;
nuclear@0: }
nuclear@0: 
nuclear@0: void Renderer::update(unsigned int msec)
nuclear@0: {
nuclear@0: }