951 lines
24 KiB
C++
951 lines
24 KiB
C++
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// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2014 Daniele Panozzo <daniele.panozzo@gmail.com>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public License
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// v. 2.0. If a copy of the MPL was not distributed with this file, You can
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// obtain one at http://mozilla.org/MPL/2.0/.
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#include "Viewer.h"
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#include <chrono>
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#include <thread>
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#include <Eigen/LU>
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#include "../gl.h"
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#include <GLFW/glfw3.h>
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#include <cmath>
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#include <cstdio>
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#include <sstream>
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#include <iomanip>
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#include <iostream>
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#include <fstream>
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#include <algorithm>
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#include <limits>
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#include <cassert>
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#include <igl/project.h>
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#include <igl/get_seconds.h>
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#include <igl/readOBJ.h>
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#include <igl/readOFF.h>
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#include <igl/adjacency_list.h>
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#include <igl/writeOBJ.h>
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#include <igl/writeOFF.h>
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#include <igl/massmatrix.h>
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#include <igl/file_dialog_open.h>
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#include <igl/file_dialog_save.h>
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#include <igl/quat_mult.h>
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#include <igl/axis_angle_to_quat.h>
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#include <igl/trackball.h>
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#include <igl/two_axis_valuator_fixed_up.h>
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#include <igl/snap_to_canonical_view_quat.h>
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#include <igl/unproject.h>
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#include <igl/serialize.h>
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// Internal global variables used for glfw event handling
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static igl::opengl::glfw::Viewer * __viewer;
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static double highdpi = 1;
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static double scroll_x = 0;
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static double scroll_y = 0;
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static void glfw_mouse_press(GLFWwindow* window, int button, int action, int modifier)
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{
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igl::opengl::glfw::Viewer::MouseButton mb;
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if (button == GLFW_MOUSE_BUTTON_1)
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mb = igl::opengl::glfw::Viewer::MouseButton::Left;
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else if (button == GLFW_MOUSE_BUTTON_2)
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mb = igl::opengl::glfw::Viewer::MouseButton::Right;
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else //if (button == GLFW_MOUSE_BUTTON_3)
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mb = igl::opengl::glfw::Viewer::MouseButton::Middle;
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if (action == GLFW_PRESS)
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__viewer->mouse_down(mb,modifier);
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else
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__viewer->mouse_up(mb,modifier);
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}
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static void glfw_error_callback(int error, const char* description)
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{
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fputs(description, stderr);
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}
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static void glfw_char_mods_callback(GLFWwindow* window, unsigned int codepoint, int modifier)
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{
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__viewer->key_pressed(codepoint, modifier);
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}
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static void glfw_key_callback(GLFWwindow* window, int key, int scancode, int action, int modifier)
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{
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if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS)
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glfwSetWindowShouldClose(window, GL_TRUE);
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if (action == GLFW_PRESS)
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__viewer->key_down(key, modifier);
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else if(action == GLFW_RELEASE)
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__viewer->key_up(key, modifier);
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}
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static void glfw_window_size(GLFWwindow* window, int width, int height)
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{
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int w = width*highdpi;
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int h = height*highdpi;
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__viewer->post_resize(w, h);
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}
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static void glfw_mouse_move(GLFWwindow* window, double x, double y)
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{
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__viewer->mouse_move(x*highdpi, y*highdpi);
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}
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static void glfw_mouse_scroll(GLFWwindow* window, double x, double y)
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{
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using namespace std;
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scroll_x += x;
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scroll_y += y;
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__viewer->mouse_scroll(y);
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}
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static void glfw_drop_callback(GLFWwindow *window,int count,const char **filenames)
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{
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}
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namespace igl
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{
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namespace opengl
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{
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namespace glfw
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{
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IGL_INLINE int Viewer::launch(bool resizable,bool fullscreen)
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{
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// TODO return values are being ignored...
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launch_init(resizable,fullscreen);
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launch_rendering(true);
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launch_shut();
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return EXIT_SUCCESS;
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}
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IGL_INLINE int Viewer::launch_init(bool resizable,bool fullscreen)
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{
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glfwSetErrorCallback(glfw_error_callback);
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if (!glfwInit())
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{
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return EXIT_FAILURE;
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}
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glfwWindowHint(GLFW_SAMPLES, 8);
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glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
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glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
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#ifdef __APPLE__
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glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
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glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
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#endif
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if(fullscreen)
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{
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GLFWmonitor *monitor = glfwGetPrimaryMonitor();
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const GLFWvidmode *mode = glfwGetVideoMode(monitor);
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window = glfwCreateWindow(mode->width,mode->height,"libigl viewer",monitor,nullptr);
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}
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else
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{
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if (core.viewport.tail<2>().any()) {
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window = glfwCreateWindow(core.viewport(2),core.viewport(3),"libigl viewer",nullptr,nullptr);
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} else {
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window = glfwCreateWindow(1280,800,"libigl viewer",nullptr,nullptr);
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}
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}
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if (!window)
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{
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glfwTerminate();
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return EXIT_FAILURE;
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}
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glfwMakeContextCurrent(window);
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// Load OpenGL and its extensions
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if (!gladLoadGLLoader((GLADloadproc) glfwGetProcAddress))
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{
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printf("Failed to load OpenGL and its extensions\n");
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return(-1);
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}
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#if defined(DEBUG) || defined(_DEBUG)
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printf("OpenGL Version %d.%d loaded\n", GLVersion.major, GLVersion.minor);
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int major, minor, rev;
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major = glfwGetWindowAttrib(window, GLFW_CONTEXT_VERSION_MAJOR);
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minor = glfwGetWindowAttrib(window, GLFW_CONTEXT_VERSION_MINOR);
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rev = glfwGetWindowAttrib(window, GLFW_CONTEXT_REVISION);
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printf("OpenGL version received: %d.%d.%d\n", major, minor, rev);
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printf("Supported OpenGL is %s\n", (const char*)glGetString(GL_VERSION));
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printf("Supported GLSL is %s\n", (const char*)glGetString(GL_SHADING_LANGUAGE_VERSION));
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#endif
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glfwSetInputMode(window,GLFW_CURSOR,GLFW_CURSOR_NORMAL);
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// Initialize FormScreen
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__viewer = this;
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// Register callbacks
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glfwSetKeyCallback(window, glfw_key_callback);
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glfwSetCursorPosCallback(window,glfw_mouse_move);
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glfwSetWindowSizeCallback(window,glfw_window_size);
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glfwSetMouseButtonCallback(window,glfw_mouse_press);
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glfwSetScrollCallback(window,glfw_mouse_scroll);
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glfwSetCharModsCallback(window,glfw_char_mods_callback);
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glfwSetDropCallback(window,glfw_drop_callback);
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// Handle retina displays (windows and mac)
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int width, height;
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glfwGetFramebufferSize(window, &width, &height);
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int width_window, height_window;
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glfwGetWindowSize(window, &width_window, &height_window);
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highdpi = width/width_window;
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glfw_window_size(window,width_window,height_window);
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//opengl.init();
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core.align_camera_center(data().V,data().F);
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// Initialize IGL viewer
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init();
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return EXIT_SUCCESS;
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}
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IGL_INLINE bool Viewer::launch_rendering(bool loop)
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{
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// glfwMakeContextCurrent(window);
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// Rendering loop
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const int num_extra_frames = 5;
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int frame_counter = 0;
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while (!glfwWindowShouldClose(window))
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{
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double tic = get_seconds();
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draw();
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glfwSwapBuffers(window);
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if(core.is_animating || frame_counter++ < num_extra_frames)
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{
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glfwPollEvents();
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// In microseconds
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double duration = 1000000.*(get_seconds()-tic);
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const double min_duration = 1000000./core.animation_max_fps;
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if(duration<min_duration)
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{
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std::this_thread::sleep_for(std::chrono::microseconds((int)(min_duration-duration)));
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}
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}
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else
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{
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glfwWaitEvents();
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frame_counter = 0;
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}
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if (!loop)
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return !glfwWindowShouldClose(window);
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}
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return EXIT_SUCCESS;
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}
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IGL_INLINE void Viewer::launch_shut()
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{
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for(auto & data : data_list)
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{
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data.meshgl.free();
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}
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core.shut();
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shutdown_plugins();
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glfwDestroyWindow(window);
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glfwTerminate();
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return;
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}
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IGL_INLINE void Viewer::init()
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{
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core.init();
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if (callback_init)
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if (callback_init(*this))
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return;
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init_plugins();
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}
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IGL_INLINE void Viewer::init_plugins()
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{
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// Init all plugins
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for (unsigned int i = 0; i<plugins.size(); ++i)
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{
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plugins[i]->init(this);
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}
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}
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IGL_INLINE void Viewer::shutdown_plugins()
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{
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for (unsigned int i = 0; i<plugins.size(); ++i)
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{
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plugins[i]->shutdown();
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}
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}
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IGL_INLINE Viewer::Viewer():
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data_list(1),
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selected_data_index(0),
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next_data_id(1)
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{
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window = nullptr;
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data_list.front().id = 0;
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// Temporary variables initialization
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down = false;
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hack_never_moved = true;
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scroll_position = 0.0f;
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// Per face
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data().set_face_based(false);
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// C-style callbacks
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callback_init = nullptr;
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callback_pre_draw = nullptr;
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callback_post_draw = nullptr;
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callback_mouse_down = nullptr;
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callback_mouse_up = nullptr;
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callback_mouse_move = nullptr;
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callback_mouse_scroll = nullptr;
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callback_key_down = nullptr;
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callback_key_up = nullptr;
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callback_init_data = nullptr;
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callback_pre_draw_data = nullptr;
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callback_post_draw_data = nullptr;
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callback_mouse_down_data = nullptr;
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callback_mouse_up_data = nullptr;
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callback_mouse_move_data = nullptr;
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callback_mouse_scroll_data = nullptr;
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callback_key_down_data = nullptr;
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callback_key_up_data = nullptr;
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#ifndef IGL_VIEWER_VIEWER_QUIET
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const std::string usage(R"(igl::opengl::glfw::Viewer usage:
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[drag] Rotate scene
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A,a Toggle animation (tight draw loop)
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F,f Toggle face based
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I,i Toggle invert normals
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L,l Toggle wireframe
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O,o Toggle orthographic/perspective projection
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T,t Toggle filled faces
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Z Snap to canonical view
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[,] Toggle between rotation control types (trackball, two-axis
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valuator with fixed up, 2D mode with no rotation))
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<,> Toggle between models
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; Toggle vertex labels
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: Toggle face labels)"
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);
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std::cout<<usage<<std::endl;
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#endif
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}
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IGL_INLINE Viewer::~Viewer()
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{
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}
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IGL_INLINE bool Viewer::load_mesh_from_file(
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const std::string & mesh_file_name_string)
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{
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// first try to load it with a plugin
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for (unsigned int i = 0; i<plugins.size(); ++i)
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{
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if (plugins[i]->load(mesh_file_name_string))
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{
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return true;
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}
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}
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// Create new data slot and set to selected
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if(!(data().F.rows() == 0 && data().V.rows() == 0))
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{
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append_mesh();
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}
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data().clear();
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size_t last_dot = mesh_file_name_string.rfind('.');
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if (last_dot == std::string::npos)
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{
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std::cerr<<"Error: No file extension found in "<<
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mesh_file_name_string<<std::endl;
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return false;
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}
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std::string extension = mesh_file_name_string.substr(last_dot+1);
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if (extension == "off" || extension =="OFF")
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{
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Eigen::MatrixXd V;
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Eigen::MatrixXi F;
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if (!igl::readOFF(mesh_file_name_string, V, F))
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return false;
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data().set_mesh(V,F);
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}
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else if (extension == "obj" || extension =="OBJ")
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{
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Eigen::MatrixXd corner_normals;
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Eigen::MatrixXi fNormIndices;
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Eigen::MatrixXd UV_V;
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Eigen::MatrixXi UV_F;
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Eigen::MatrixXd V;
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Eigen::MatrixXi F;
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if (!(
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igl::readOBJ(
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mesh_file_name_string,
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V, UV_V, corner_normals, F, UV_F, fNormIndices)))
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{
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return false;
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}
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data().set_mesh(V,F);
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data().set_uv(UV_V,UV_F);
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}
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else
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{
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// unrecognized file type
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printf("Error: %s is not a recognized file type.\n",extension.c_str());
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return false;
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}
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data().compute_normals();
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data().uniform_colors(Eigen::Vector3d(51.0/255.0,43.0/255.0,33.3/255.0),
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Eigen::Vector3d(255.0/255.0,228.0/255.0,58.0/255.0),
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Eigen::Vector3d(255.0/255.0,235.0/255.0,80.0/255.0));
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// Alec: why?
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if (data().V_uv.rows() == 0)
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{
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data().grid_texture();
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}
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core.align_camera_center(data().V,data().F);
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for (unsigned int i = 0; i<plugins.size(); ++i)
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if (plugins[i]->post_load())
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return true;
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return true;
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}
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IGL_INLINE bool Viewer::save_mesh_to_file(
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const std::string & mesh_file_name_string)
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{
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// first try to load it with a plugin
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for (unsigned int i = 0; i<plugins.size(); ++i)
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if (plugins[i]->save(mesh_file_name_string))
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return true;
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size_t last_dot = mesh_file_name_string.rfind('.');
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||
|
if (last_dot == std::string::npos)
|
||
|
{
|
||
|
// No file type determined
|
||
|
std::cerr<<"Error: No file extension found in "<<
|
||
|
mesh_file_name_string<<std::endl;
|
||
|
return false;
|
||
|
}
|
||
|
std::string extension = mesh_file_name_string.substr(last_dot+1);
|
||
|
if (extension == "off" || extension =="OFF")
|
||
|
{
|
||
|
return igl::writeOFF(
|
||
|
mesh_file_name_string,data().V,data().F);
|
||
|
}
|
||
|
else if (extension == "obj" || extension =="OBJ")
|
||
|
{
|
||
|
Eigen::MatrixXd corner_normals;
|
||
|
Eigen::MatrixXi fNormIndices;
|
||
|
|
||
|
Eigen::MatrixXd UV_V;
|
||
|
Eigen::MatrixXi UV_F;
|
||
|
|
||
|
return igl::writeOBJ(mesh_file_name_string,
|
||
|
data().V,
|
||
|
data().F,
|
||
|
corner_normals, fNormIndices, UV_V, UV_F);
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
// unrecognized file type
|
||
|
printf("Error: %s is not a recognized file type.\n",extension.c_str());
|
||
|
return false;
|
||
|
}
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
IGL_INLINE bool Viewer::key_pressed(unsigned int unicode_key,int modifiers)
|
||
|
{
|
||
|
if (callback_key_pressed)
|
||
|
if (callback_key_pressed(*this,unicode_key,modifiers))
|
||
|
return true;
|
||
|
|
||
|
for (unsigned int i = 0; i<plugins.size(); ++i)
|
||
|
{
|
||
|
if (plugins[i]->key_pressed(unicode_key, modifiers))
|
||
|
{
|
||
|
return true;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
switch(unicode_key)
|
||
|
{
|
||
|
case 'A':
|
||
|
case 'a':
|
||
|
{
|
||
|
core.is_animating = !core.is_animating;
|
||
|
return true;
|
||
|
}
|
||
|
case 'F':
|
||
|
case 'f':
|
||
|
{
|
||
|
data().set_face_based(!data().face_based);
|
||
|
return true;
|
||
|
}
|
||
|
case 'I':
|
||
|
case 'i':
|
||
|
{
|
||
|
data().dirty |= MeshGL::DIRTY_NORMAL;
|
||
|
data().invert_normals = !data().invert_normals;
|
||
|
return true;
|
||
|
}
|
||
|
case 'L':
|
||
|
case 'l':
|
||
|
{
|
||
|
data().show_lines = !data().show_lines;
|
||
|
return true;
|
||
|
}
|
||
|
case 'O':
|
||
|
case 'o':
|
||
|
{
|
||
|
core.orthographic = !core.orthographic;
|
||
|
return true;
|
||
|
}
|
||
|
case 'T':
|
||
|
case 't':
|
||
|
{
|
||
|
data().show_faces = !data().show_faces;
|
||
|
return true;
|
||
|
}
|
||
|
case 'Z':
|
||
|
{
|
||
|
snap_to_canonical_quaternion();
|
||
|
return true;
|
||
|
}
|
||
|
case '[':
|
||
|
case ']':
|
||
|
{
|
||
|
if(core.rotation_type == ViewerCore::ROTATION_TYPE_TRACKBALL)
|
||
|
core.set_rotation_type(ViewerCore::ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP);
|
||
|
else
|
||
|
core.set_rotation_type(ViewerCore::ROTATION_TYPE_TRACKBALL);
|
||
|
|
||
|
return true;
|
||
|
}
|
||
|
case '<':
|
||
|
case '>':
|
||
|
{
|
||
|
selected_data_index =
|
||
|
(selected_data_index + data_list.size() + (unicode_key=='>'?1:-1))%data_list.size();
|
||
|
return true;
|
||
|
}
|
||
|
case ';':
|
||
|
data().show_vertid = !data().show_vertid;
|
||
|
return true;
|
||
|
case ':':
|
||
|
data().show_faceid = !data().show_faceid;
|
||
|
return true;
|
||
|
default: break;//do nothing
|
||
|
}
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
IGL_INLINE bool Viewer::key_down(int key,int modifiers)
|
||
|
{
|
||
|
if (callback_key_down)
|
||
|
if (callback_key_down(*this,key,modifiers))
|
||
|
return true;
|
||
|
for (unsigned int i = 0; i<plugins.size(); ++i)
|
||
|
if (plugins[i]->key_down(key, modifiers))
|
||
|
return true;
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
IGL_INLINE bool Viewer::key_up(int key,int modifiers)
|
||
|
{
|
||
|
if (callback_key_up)
|
||
|
if (callback_key_up(*this,key,modifiers))
|
||
|
return true;
|
||
|
|
||
|
for (unsigned int i = 0; i<plugins.size(); ++i)
|
||
|
if (plugins[i]->key_up(key, modifiers))
|
||
|
return true;
|
||
|
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
IGL_INLINE bool Viewer::mouse_down(MouseButton button,int modifier)
|
||
|
{
|
||
|
// Remember mouse location at down even if used by callback/plugin
|
||
|
down_mouse_x = current_mouse_x;
|
||
|
down_mouse_y = current_mouse_y;
|
||
|
|
||
|
if (callback_mouse_down)
|
||
|
if (callback_mouse_down(*this,static_cast<int>(button),modifier))
|
||
|
return true;
|
||
|
|
||
|
for (unsigned int i = 0; i<plugins.size(); ++i)
|
||
|
if(plugins[i]->mouse_down(static_cast<int>(button),modifier))
|
||
|
return true;
|
||
|
|
||
|
down = true;
|
||
|
|
||
|
down_translation = core.camera_translation;
|
||
|
|
||
|
|
||
|
// Initialization code for the trackball
|
||
|
Eigen::RowVector3d center;
|
||
|
if (data().V.rows() == 0)
|
||
|
{
|
||
|
center << 0,0,0;
|
||
|
}else
|
||
|
{
|
||
|
center = data().V.colwise().sum()/data().V.rows();
|
||
|
}
|
||
|
|
||
|
Eigen::Vector3f coord =
|
||
|
igl::project(
|
||
|
Eigen::Vector3f(center(0),center(1),center(2)),
|
||
|
core.view,
|
||
|
core.proj,
|
||
|
core.viewport);
|
||
|
down_mouse_z = coord[2];
|
||
|
down_rotation = core.trackball_angle;
|
||
|
|
||
|
mouse_mode = MouseMode::Rotation;
|
||
|
|
||
|
switch (button)
|
||
|
{
|
||
|
case MouseButton::Left:
|
||
|
if (core.rotation_type == ViewerCore::ROTATION_TYPE_NO_ROTATION) {
|
||
|
mouse_mode = MouseMode::Translation;
|
||
|
} else {
|
||
|
mouse_mode = MouseMode::Rotation;
|
||
|
}
|
||
|
break;
|
||
|
|
||
|
case MouseButton::Right:
|
||
|
mouse_mode = MouseMode::Translation;
|
||
|
break;
|
||
|
|
||
|
default:
|
||
|
mouse_mode = MouseMode::None;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
IGL_INLINE bool Viewer::mouse_up(MouseButton button,int modifier)
|
||
|
{
|
||
|
down = false;
|
||
|
|
||
|
if (callback_mouse_up)
|
||
|
if (callback_mouse_up(*this,static_cast<int>(button),modifier))
|
||
|
return true;
|
||
|
|
||
|
for (unsigned int i = 0; i<plugins.size(); ++i)
|
||
|
if(plugins[i]->mouse_up(static_cast<int>(button),modifier))
|
||
|
return true;
|
||
|
|
||
|
mouse_mode = MouseMode::None;
|
||
|
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
IGL_INLINE bool Viewer::mouse_move(int mouse_x,int mouse_y)
|
||
|
{
|
||
|
if(hack_never_moved)
|
||
|
{
|
||
|
down_mouse_x = mouse_x;
|
||
|
down_mouse_y = mouse_y;
|
||
|
hack_never_moved = false;
|
||
|
}
|
||
|
current_mouse_x = mouse_x;
|
||
|
current_mouse_y = mouse_y;
|
||
|
|
||
|
if (callback_mouse_move)
|
||
|
if (callback_mouse_move(*this,mouse_x,mouse_y))
|
||
|
return true;
|
||
|
|
||
|
for (unsigned int i = 0; i<plugins.size(); ++i)
|
||
|
if (plugins[i]->mouse_move(mouse_x, mouse_y))
|
||
|
return true;
|
||
|
|
||
|
if (down)
|
||
|
{
|
||
|
switch (mouse_mode)
|
||
|
{
|
||
|
case MouseMode::Rotation:
|
||
|
{
|
||
|
switch(core.rotation_type)
|
||
|
{
|
||
|
default:
|
||
|
assert(false && "Unknown rotation type");
|
||
|
case ViewerCore::ROTATION_TYPE_NO_ROTATION:
|
||
|
break;
|
||
|
case ViewerCore::ROTATION_TYPE_TRACKBALL:
|
||
|
igl::trackball(
|
||
|
core.viewport(2),
|
||
|
core.viewport(3),
|
||
|
2.0f,
|
||
|
down_rotation,
|
||
|
down_mouse_x,
|
||
|
down_mouse_y,
|
||
|
mouse_x,
|
||
|
mouse_y,
|
||
|
core.trackball_angle);
|
||
|
break;
|
||
|
case ViewerCore::ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP:
|
||
|
igl::two_axis_valuator_fixed_up(
|
||
|
core.viewport(2),core.viewport(3),
|
||
|
2.0,
|
||
|
down_rotation,
|
||
|
down_mouse_x, down_mouse_y, mouse_x, mouse_y,
|
||
|
core.trackball_angle);
|
||
|
break;
|
||
|
}
|
||
|
//Eigen::Vector4f snapq = core.trackball_angle;
|
||
|
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
case MouseMode::Translation:
|
||
|
{
|
||
|
//translation
|
||
|
Eigen::Vector3f pos1 = igl::unproject(Eigen::Vector3f(mouse_x, core.viewport[3] - mouse_y, down_mouse_z), core.view, core.proj, core.viewport);
|
||
|
Eigen::Vector3f pos0 = igl::unproject(Eigen::Vector3f(down_mouse_x, core.viewport[3] - down_mouse_y, down_mouse_z), core.view, core.proj, core.viewport);
|
||
|
|
||
|
Eigen::Vector3f diff = pos1 - pos0;
|
||
|
core.camera_translation = down_translation + Eigen::Vector3f(diff[0],diff[1],diff[2]);
|
||
|
|
||
|
break;
|
||
|
}
|
||
|
case MouseMode::Zoom:
|
||
|
{
|
||
|
float delta = 0.001f * (mouse_x - down_mouse_x + mouse_y - down_mouse_y);
|
||
|
core.camera_zoom *= 1 + delta;
|
||
|
down_mouse_x = mouse_x;
|
||
|
down_mouse_y = mouse_y;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
default:
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
IGL_INLINE bool Viewer::mouse_scroll(float delta_y)
|
||
|
{
|
||
|
scroll_position += delta_y;
|
||
|
|
||
|
if (callback_mouse_scroll)
|
||
|
if (callback_mouse_scroll(*this,delta_y))
|
||
|
return true;
|
||
|
|
||
|
for (unsigned int i = 0; i<plugins.size(); ++i)
|
||
|
if (plugins[i]->mouse_scroll(delta_y))
|
||
|
return true;
|
||
|
|
||
|
// Only zoom if there's actually a change
|
||
|
if(delta_y != 0)
|
||
|
{
|
||
|
float mult = (1.0+((delta_y>0)?1.:-1.)*0.05);
|
||
|
const float min_zoom = 0.1f;
|
||
|
core.camera_zoom = (core.camera_zoom * mult > min_zoom ? core.camera_zoom * mult : min_zoom);
|
||
|
}
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
IGL_INLINE bool Viewer::load_scene()
|
||
|
{
|
||
|
std::string fname = igl::file_dialog_open();
|
||
|
if(fname.length() == 0)
|
||
|
return false;
|
||
|
return load_scene(fname);
|
||
|
}
|
||
|
|
||
|
IGL_INLINE bool Viewer::load_scene(std::string fname)
|
||
|
{
|
||
|
igl::deserialize(core,"Core",fname.c_str());
|
||
|
igl::deserialize(data(),"Data",fname.c_str());
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
IGL_INLINE bool Viewer::save_scene()
|
||
|
{
|
||
|
std::string fname = igl::file_dialog_save();
|
||
|
if (fname.length() == 0)
|
||
|
return false;
|
||
|
return save_scene(fname);
|
||
|
}
|
||
|
|
||
|
IGL_INLINE bool Viewer::save_scene(std::string fname)
|
||
|
{
|
||
|
igl::serialize(core,"Core",fname.c_str(),true);
|
||
|
igl::serialize(data(),"Data",fname.c_str());
|
||
|
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
IGL_INLINE void Viewer::draw()
|
||
|
{
|
||
|
using namespace std;
|
||
|
using namespace Eigen;
|
||
|
|
||
|
int width, height;
|
||
|
glfwGetFramebufferSize(window, &width, &height);
|
||
|
|
||
|
int width_window, height_window;
|
||
|
glfwGetWindowSize(window, &width_window, &height_window);
|
||
|
|
||
|
auto highdpi_tmp = width/width_window;
|
||
|
|
||
|
if(fabs(highdpi_tmp-highdpi)>1e-8)
|
||
|
{
|
||
|
post_resize(width, height);
|
||
|
highdpi=highdpi_tmp;
|
||
|
}
|
||
|
|
||
|
core.clear_framebuffers();
|
||
|
if (callback_pre_draw)
|
||
|
{
|
||
|
if (callback_pre_draw(*this))
|
||
|
{
|
||
|
return;
|
||
|
}
|
||
|
}
|
||
|
for (unsigned int i = 0; i<plugins.size(); ++i)
|
||
|
{
|
||
|
if (plugins[i]->pre_draw())
|
||
|
{
|
||
|
return;
|
||
|
}
|
||
|
}
|
||
|
for(int i = 0;i<data_list.size();i++)
|
||
|
{
|
||
|
core.draw(data_list[i]);
|
||
|
}
|
||
|
if (callback_post_draw)
|
||
|
{
|
||
|
if (callback_post_draw(*this))
|
||
|
{
|
||
|
return;
|
||
|
}
|
||
|
}
|
||
|
for (unsigned int i = 0; i<plugins.size(); ++i)
|
||
|
{
|
||
|
if (plugins[i]->post_draw())
|
||
|
{
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
IGL_INLINE void Viewer::resize(int w,int h)
|
||
|
{
|
||
|
if (window) {
|
||
|
glfwSetWindowSize(window, w/highdpi, h/highdpi);
|
||
|
}
|
||
|
post_resize(w, h);
|
||
|
}
|
||
|
|
||
|
IGL_INLINE void Viewer::post_resize(int w,int h)
|
||
|
{
|
||
|
core.viewport = Eigen::Vector4f(0,0,w,h);
|
||
|
for (unsigned int i = 0; i<plugins.size(); ++i)
|
||
|
{
|
||
|
plugins[i]->post_resize(w, h);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
IGL_INLINE void Viewer::snap_to_canonical_quaternion()
|
||
|
{
|
||
|
Eigen::Quaternionf snapq = this->core.trackball_angle;
|
||
|
igl::snap_to_canonical_view_quat(snapq,1.0f,this->core.trackball_angle);
|
||
|
}
|
||
|
|
||
|
IGL_INLINE void Viewer::open_dialog_load_mesh()
|
||
|
{
|
||
|
std::string fname = igl::file_dialog_open();
|
||
|
|
||
|
if (fname.length() == 0)
|
||
|
return;
|
||
|
|
||
|
this->load_mesh_from_file(fname.c_str());
|
||
|
}
|
||
|
|
||
|
IGL_INLINE void Viewer::open_dialog_save_mesh()
|
||
|
{
|
||
|
std::string fname = igl::file_dialog_save();
|
||
|
|
||
|
if(fname.length() == 0)
|
||
|
return;
|
||
|
|
||
|
this->save_mesh_to_file(fname.c_str());
|
||
|
}
|
||
|
|
||
|
IGL_INLINE ViewerData& Viewer::data()
|
||
|
{
|
||
|
assert(!data_list.empty() && "data_list should never be empty");
|
||
|
assert(
|
||
|
(selected_data_index >= 0 && selected_data_index < data_list.size()) &&
|
||
|
"selected_data_index should be in bounds");
|
||
|
return data_list[selected_data_index];
|
||
|
}
|
||
|
|
||
|
IGL_INLINE int Viewer::append_mesh()
|
||
|
{
|
||
|
assert(data_list.size() >= 1);
|
||
|
|
||
|
data_list.emplace_back();
|
||
|
selected_data_index = data_list.size()-1;
|
||
|
data_list.back().id = next_data_id++;
|
||
|
return data_list.back().id;
|
||
|
}
|
||
|
|
||
|
IGL_INLINE bool Viewer::erase_mesh(const size_t index)
|
||
|
{
|
||
|
assert((index >= 0 && index < data_list.size()) && "index should be in bounds");
|
||
|
assert(data_list.size() >= 1);
|
||
|
if(data_list.size() == 1)
|
||
|
{
|
||
|
// Cannot remove last mesh
|
||
|
return false;
|
||
|
}
|
||
|
data_list[index].meshgl.free();
|
||
|
data_list.erase(data_list.begin() + index);
|
||
|
if(selected_data_index >= index && selected_data_index>0)
|
||
|
{
|
||
|
selected_data_index--;
|
||
|
}
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
IGL_INLINE size_t Viewer::mesh_index(const int id) const {
|
||
|
for (size_t i = 0; i < data_list.size(); ++i)
|
||
|
{
|
||
|
if (data_list[i].id == id)
|
||
|
return i;
|
||
|
}
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
|
||
|
} // end namespace
|
||
|
} // end namespace
|
||
|
}
|