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-rw-r--r--glview.cc491
1 files changed, 0 insertions, 491 deletions
diff --git a/glview.cc b/glview.cc
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index 1068318..0000000
--- a/glview.cc
+++ /dev/null
@@ -1,491 +0,0 @@
-/*
- * OpenSCAD (www.openscad.at)
- * Copyright (C) 2009 Clifford Wolf <clifford@clifford.at>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- */
-
-#include "openscad.h"
-#include "GLView.h"
-#include "Preferences.h"
-
-#include <QApplication>
-#include <QWheelEvent>
-#include <QMouseEvent>
-#include <QMessageBox>
-#include <QTimer>
-
-#define FAR_FAR_AWAY 100000.0
-
-GLView::GLView(QWidget *parent) : QGLWidget(parent)
-{
- viewer_distance = 500;
- object_rot_x = 35;
- object_rot_y = 0;
- object_rot_z = 25;
- object_trans_x = 0;
- object_trans_y = 0;
- object_trans_z = 0;
-
- mouse_drag_active = false;
- last_mouse_x = 0;
- last_mouse_y = 0;
-
- orthomode = false;
- showaxes = false;
- showcrosshairs = false;
-
- renderfunc = NULL;
- renderfunc_vp = NULL;
-
- for (int i = 0; i < 10; i++)
- shaderinfo[i] = 0;
-
- statusLabel = NULL;
-
- setMouseTracking(true);
-#ifdef ENABLE_OPENCSG
- opencsg_support = true;
-#endif
-}
-
-void GLView::setRenderFunc(void (*func)(void*), void *userdata)
-{
- this->renderfunc = func;
- this->renderfunc_vp = userdata;
-}
-
-void GLView::initializeGL()
-{
- glEnable(GL_DEPTH_TEST);
- glDepthRange(-FAR_FAR_AWAY, +FAR_FAR_AWAY);
-
- glEnable(GL_BLEND);
- glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-
-#ifdef ENABLE_OPENCSG
- GLenum err = glewInit();
- if (GLEW_OK != err) {
- fprintf(stderr, "GLEW Error: %s\n", glewGetErrorString(err));
- }
- const char *openscad_disable_gl20_env = getenv("OPENSCAD_DISABLE_GL20");
- if (openscad_disable_gl20_env && !strcmp(openscad_disable_gl20_env, "0"))
- openscad_disable_gl20_env = NULL;
- if (glewIsSupported("GL_VERSION_2_0") && openscad_disable_gl20_env == NULL)
- {
- const char *vs_source =
- "uniform float xscale, yscale;\n"
- "attribute vec3 pos_b, pos_c;\n"
- "attribute vec3 trig, mask;\n"
- "varying vec3 tp, tr;\n"
- "varying float shading;\n"
- "void main() {\n"
- " vec4 p0 = gl_ModelViewProjectionMatrix * gl_Vertex;\n"
- " vec4 p1 = gl_ModelViewProjectionMatrix * vec4(pos_b, 1.0);\n"
- " vec4 p2 = gl_ModelViewProjectionMatrix * vec4(pos_c, 1.0);\n"
- " float a = distance(vec2(xscale*p1.x/p1.w, yscale*p1.y/p1.w), vec2(xscale*p2.x/p2.w, yscale*p2.y/p2.w));\n"
- " float b = distance(vec2(xscale*p0.x/p0.w, yscale*p0.y/p0.w), vec2(xscale*p1.x/p1.w, yscale*p1.y/p1.w));\n"
- " float c = distance(vec2(xscale*p0.x/p0.w, yscale*p0.y/p0.w), vec2(xscale*p2.x/p2.w, yscale*p2.y/p2.w));\n"
- " float s = (a + b + c) / 2.0;\n"
- " float A = sqrt(s*(s-a)*(s-b)*(s-c));\n"
- " float ha = 2.0*A/a;\n"
- " gl_Position = p0;\n"
- " tp = mask * ha;\n"
- " tr = trig;\n"
- " vec3 normal, lightDir;\n"
- " normal = normalize(gl_NormalMatrix * gl_Normal);\n"
- " lightDir = normalize(vec3(gl_LightSource[0].position));\n"
- " shading = abs(dot(normal, lightDir));\n"
- "}\n";
-
- const char *fs_source =
- "uniform vec4 color1, color2;\n"
- "varying vec3 tp, tr, tmp;\n"
- "varying float shading;\n"
- "void main() {\n"
- " gl_FragColor = vec4(color1.r * shading, color1.g * shading, color1.b * shading, color1.a);\n"
- " if (tp.x < tr.x || tp.y < tr.y || tp.z < tr.z)\n"
- " gl_FragColor = color2;\n"
- "}\n";
-
- GLuint vs = glCreateShader(GL_VERTEX_SHADER);
- glShaderSource(vs, 1, (const GLchar**)&vs_source, NULL);
- glCompileShader(vs);
-
- GLuint fs = glCreateShader(GL_FRAGMENT_SHADER);
- glShaderSource(fs, 1, (const GLchar**)&fs_source, NULL);
- glCompileShader(fs);
-
- GLuint edgeshader_prog = glCreateProgram();
- glAttachShader(edgeshader_prog, vs);
- glAttachShader(edgeshader_prog, fs);
- glLinkProgram(edgeshader_prog);
-
- shaderinfo[0] = edgeshader_prog;
- shaderinfo[1] = glGetUniformLocation(edgeshader_prog, "color1");
- shaderinfo[2] = glGetUniformLocation(edgeshader_prog, "color2");
- shaderinfo[3] = glGetAttribLocation(edgeshader_prog, "trig");
- shaderinfo[4] = glGetAttribLocation(edgeshader_prog, "pos_b");
- shaderinfo[5] = glGetAttribLocation(edgeshader_prog, "pos_c");
- shaderinfo[6] = glGetAttribLocation(edgeshader_prog, "mask");
- shaderinfo[7] = glGetUniformLocation(edgeshader_prog, "xscale");
- shaderinfo[8] = glGetUniformLocation(edgeshader_prog, "yscale");
-
- GLenum err = glGetError();
- if (err != GL_NO_ERROR) {
- fprintf(stderr, "OpenGL Error: %s\n", gluErrorString(err));
- }
-
- GLint status;
- glGetProgramiv(edgeshader_prog, GL_LINK_STATUS, &status);
- if (status == GL_FALSE) {
- int loglen;
- char logbuffer[1000];
- glGetProgramInfoLog(edgeshader_prog, sizeof(logbuffer), &loglen, logbuffer);
- fprintf(stderr, "OpenGL Program Linker Error:\n%.*s", loglen, logbuffer);
- } else {
- int loglen;
- char logbuffer[1000];
- glGetProgramInfoLog(edgeshader_prog, sizeof(logbuffer), &loglen, logbuffer);
- if (loglen > 0) {
- fprintf(stderr, "OpenGL Program Link OK:\n%.*s", loglen, logbuffer);
- }
- glValidateProgram(edgeshader_prog);
- glGetProgramInfoLog(edgeshader_prog, sizeof(logbuffer), &loglen, logbuffer);
- if (loglen > 0) {
- fprintf(stderr, "OpenGL Program Validation results:\n%.*s", loglen, logbuffer);
- }
- }
- } else {
- opencsg_support = false;
- QTimer::singleShot(0, this, SLOT(display_opengl20_warning()));
- }
-#endif /* ENABLE_OPENCSG */
-}
-
-#ifdef ENABLE_OPENCSG
-void GLView::display_opengl20_warning()
-{
- QMessageBox::warning(NULL, "GLEW: GL_VERSION_2_0 is not supported!",
- "Warning: No support for OpenGL 2.0 found! OpenCSG View has been disabled.\n\n"
- "It is highly recommended to use OpenSCAD on a system with OpenGL 2.0 "
- "support. Please check if OpenGL 2.0 drivers are available for your "
- "graphics hardware.");
-}
-#endif
-
-void GLView::resizeGL(int w, int h)
-{
-#ifdef ENABLE_OPENCSG
- shaderinfo[9] = w;
- shaderinfo[10] = h;
-#endif
- glViewport(0, 0, w, h);
- w_h_ratio = sqrt((double)w / (double)h);
-}
-
-void GLView::paintGL()
-{
- const QColor &col = Preferences::inst()->color(Preferences::BACKGROUND_COLOR);
- glClearColor(col.redF(), col.greenF(), col.blueF(), 0.0);
-
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
-
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- if (orthomode)
- glOrtho(-w_h_ratio*viewer_distance/10, +w_h_ratio*viewer_distance/10,
- -(1/w_h_ratio)*viewer_distance/10, +(1/w_h_ratio)*viewer_distance/10,
- -FAR_FAR_AWAY, +FAR_FAR_AWAY);
- else
- glFrustum(-w_h_ratio, +w_h_ratio, -(1/w_h_ratio), +(1/w_h_ratio), +10.0, +FAR_FAR_AWAY);
- gluLookAt(0.0, -viewer_distance, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 1.0);
-
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
-
- GLfloat light_diffuse[] = {1.0, 1.0, 1.0, 1.0};
- GLfloat light_position0[] = {-1.0, -1.0, +1.0, 0.0};
- GLfloat light_position1[] = {+1.0, +1.0, -1.0, 0.0};
-
- glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
- glLightfv(GL_LIGHT0, GL_POSITION, light_position0);
- glEnable(GL_LIGHT0);
- glLightfv(GL_LIGHT1, GL_DIFFUSE, light_diffuse);
- glLightfv(GL_LIGHT1, GL_POSITION, light_position1);
- glEnable(GL_LIGHT1);
- glEnable(GL_LIGHTING);
- glEnable(GL_NORMALIZE);
-
- glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
- glEnable(GL_COLOR_MATERIAL);
-
- glRotated(object_rot_x, 1.0, 0.0, 0.0);
- glRotated(object_rot_y, 0.0, 1.0, 0.0);
- glRotated(object_rot_z, 0.0, 0.0, 1.0);
-
- if (showcrosshairs)
- {
- glLineWidth(3);
- const QColor &col = Preferences::inst()->color(Preferences::CROSSHAIR_COLOR);
- glColor3f(col.redF(), col.greenF(), col.blueF());
- glBegin(GL_LINES);
- for (double xf = -1; xf <= +1; xf += 2)
- for (double yf = -1; yf <= +1; yf += 2) {
- double vd = viewer_distance/20;
- glVertex3d(-xf*vd, -yf*vd, -vd);
- glVertex3d(+xf*vd, +yf*vd, +vd);
- }
- glEnd();
- }
-
- glTranslated(object_trans_x, object_trans_y, object_trans_z);
-
- // Large gray axis cross inline with the model
- if (showaxes)
- {
- glLineWidth(1);
- glColor3d(0.5, 0.5, 0.5);
- glBegin(GL_LINES);
- glVertex3d(-viewer_distance/10, 0, 0);
- glVertex3d(+viewer_distance/10, 0, 0);
- glVertex3d(0, -viewer_distance/10, 0);
- glVertex3d(0, +viewer_distance/10, 0);
- glVertex3d(0, 0, -viewer_distance/10);
- glVertex3d(0, 0, +viewer_distance/10);
- glEnd();
- }
-
- glDepthFunc(GL_LESS);
- glCullFace(GL_BACK);
- glDisable(GL_CULL_FACE);
-
- glLineWidth(2);
- glColor3d(1.0, 0.0, 0.0);
-
- if (renderfunc)
- renderfunc(renderfunc_vp);
-
- // Small axis cross in the lower left corner
- // FIXME: Adjust color to keep contrast with background
- if (showaxes)
- {
- glDepthFunc(GL_ALWAYS);
-
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- glTranslated(-0.8, -0.8, 0);
- glOrtho(-w_h_ratio*1000/10, +w_h_ratio*1000/10,
- -(1/w_h_ratio)*1000/10, +(1/w_h_ratio)*1000/10,
- -FAR_FAR_AWAY, +FAR_FAR_AWAY);
- gluLookAt(0.0, -1000, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 1.0);
-
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
- glRotated(object_rot_x, 1.0, 0.0, 0.0);
- glRotated(object_rot_y, 0.0, 1.0, 0.0);
- glRotated(object_rot_z, 0.0, 0.0, 1.0);
-
- glLineWidth(1);
- glBegin(GL_LINES);
- glColor3d(1.0, 0.0, 0.0);
- glVertex3d(0, 0, 0); glVertex3d(10, 0, 0);
- glColor3d(0.0, 1.0, 0.0);
- glVertex3d(0, 0, 0); glVertex3d(0, 10, 0);
- glColor3d(0.0, 0.0, 1.0);
- glVertex3d(0, 0, 0); glVertex3d(0, 0, 10);
- glEnd();
-
- GLdouble mat_model[16];
- glGetDoublev(GL_MODELVIEW_MATRIX, mat_model);
-
- GLdouble mat_proj[16];
- glGetDoublev(GL_PROJECTION_MATRIX, mat_proj);
-
- GLint viewport[4];
- glGetIntegerv(GL_VIEWPORT, viewport);
-
- GLdouble xlabel_x, xlabel_y, xlabel_z;
- gluProject(12, 0, 0, mat_model, mat_proj, viewport, &xlabel_x, &xlabel_y, &xlabel_z);
- xlabel_x = round(xlabel_x); xlabel_y = round(xlabel_y);
-
- GLdouble ylabel_x, ylabel_y, ylabel_z;
- gluProject(0, 12, 0, mat_model, mat_proj, viewport, &ylabel_x, &ylabel_y, &ylabel_z);
- ylabel_x = round(ylabel_x); ylabel_y = round(ylabel_y);
-
- GLdouble zlabel_x, zlabel_y, zlabel_z;
- gluProject(0, 0, 12, mat_model, mat_proj, viewport, &zlabel_x, &zlabel_y, &zlabel_z);
- zlabel_x = round(zlabel_x); zlabel_y = round(zlabel_y);
-
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- glTranslated(-1, -1, 0);
- glScaled(2.0/viewport[2], 2.0/viewport[3], 1);
-
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
-
- // FIXME: Adjust color to keep contrast with background
- glColor3d(0.0, 0.0, 0.0);
- glBegin(GL_LINES);
- // X Label
- glVertex3d(xlabel_x-3, xlabel_y-3, 0); glVertex3d(xlabel_x+3, xlabel_y+3, 0);
- glVertex3d(xlabel_x-3, xlabel_y+3, 0); glVertex3d(xlabel_x+3, xlabel_y-3, 0);
- // Y Label
- glVertex3d(ylabel_x-3, ylabel_y-3, 0); glVertex3d(ylabel_x+3, ylabel_y+3, 0);
- glVertex3d(ylabel_x-3, ylabel_y+3, 0); glVertex3d(ylabel_x, ylabel_y, 0);
- // Z Label
- glVertex3d(zlabel_x-3, zlabel_y-3, 0); glVertex3d(zlabel_x+3, zlabel_y-3, 0);
- glVertex3d(zlabel_x-3, zlabel_y+3, 0); glVertex3d(zlabel_x+3, zlabel_y+3, 0);
- glVertex3d(zlabel_x-3, zlabel_y-3, 0); glVertex3d(zlabel_x+3, zlabel_y+3, 0);
- glEnd();
- }
-
- if (statusLabel) {
- QString msg;
- msg.sprintf("Viewport: translate = [ %.2f %.2f %.2f ], rotate = [ %.2f %.2f %.2f ], distance = %.2f",
- -object_trans_x, -object_trans_y, -object_trans_z,
- fmodf(360 - object_rot_x + 90, 360), fmodf(360 - object_rot_y, 360), fmodf(360 - object_rot_z, 360), viewer_distance);
- statusLabel->setText(msg);
- }
-}
-
-void GLView::keyPressEvent(QKeyEvent *event)
-{
- if (event->key() == Qt::Key_Plus) {
- viewer_distance *= 0.9;
- updateGL();
- return;
- }
- if (event->key() == Qt::Key_Minus) {
- viewer_distance /= 0.9;
- updateGL();
- return;
- }
-}
-
-void GLView::wheelEvent(QWheelEvent *event)
-{
- viewer_distance *= pow(0.9, event->delta() / 120.0);
- updateGL();
-}
-
-void GLView::mousePressEvent(QMouseEvent *event)
-{
- mouse_drag_active = true;
- last_mouse_x = event->globalX();
- last_mouse_y = event->globalY();
- grabMouse();
- setFocus();
-}
-
-static void mat_id(double *trg)
-{
- for (int i = 0; i < 16; i++)
- trg[i] = i%5 == 0;
-}
-
-static void mat_mul(double *trg, const double *m1, const double *m2)
-{
- double m[16];
- for (int x = 0; x < 4; x++)
- for (int y = 0; y < 4; y++)
- {
- m[x+y*4] = 0;
- for (int i = 0; i < 4; i++)
- m[x+y*4] += m1[i+y*4] * m2[x+i*4];
- }
- for (int i = 0; i < 16; i++)
- trg[i] = m[i];
-}
-
-static void mat_rot(double *trg, double angle, double x, double y, double z)
-{
- double s = sin(M_PI*angle/180), c = cos(M_PI*angle/180);
- double cc = 1 - c;
- double m[16] = {
- x*x*cc+c, x*y*cc-z*s, x*z*cc+y*s, 0,
- y*x*cc+z*s, y*y*cc+c, y*z*cc-x*s, 0,
- x*z*cc-y*s, y*z*cc+x*s, z*z*cc+c, 0,
- 0, 0, 0, 1
- };
- for (int i = 0; i < 16; i++)
- trg[i] = m[i];
-}
-
-void GLView::mouseMoveEvent(QMouseEvent *event)
-{
- int this_mouse_x = event->globalX();
- int this_mouse_y = event->globalY();
- if (mouse_drag_active) {
- if ((event->buttons() & Qt::LeftButton) != 0) {
- object_rot_x += (this_mouse_y-last_mouse_y) * 0.7;
- if ((QApplication::keyboardModifiers() & Qt::ShiftModifier) != 0)
- object_rot_y += (this_mouse_x-last_mouse_x) * 0.7;
- else
- object_rot_z += (this_mouse_x-last_mouse_x) * 0.7;
- while (object_rot_x < 0)
- object_rot_x += 360;
- while (object_rot_x >= 360)
- object_rot_x -= 360;
- while (object_rot_y < 0)
- object_rot_y += 360;
- while (object_rot_y >= 360)
- object_rot_y -= 360;
- while (object_rot_z < 0)
- object_rot_z += 360;
- while (object_rot_z >= 360)
- object_rot_z -= 360;
- } else {
- double mx = +(this_mouse_x-last_mouse_x) * viewer_distance/1000;
- double my = -(this_mouse_y-last_mouse_y) * viewer_distance/1000;
- double rx[16], ry[16], rz[16], tm[16];
- mat_rot(rx, -object_rot_x, 1.0, 0.0, 0.0);
- mat_rot(ry, -object_rot_y, 0.0, 1.0, 0.0);
- mat_rot(rz, -object_rot_z, 0.0, 0.0, 1.0);
- mat_id(tm);
- mat_mul(tm, rx, tm);
- mat_mul(tm, ry, tm);
- mat_mul(tm, rz, tm);
- double vec[16] = {
- 0, 0, 0, mx,
- 0, 0, 0, 0,
- 0, 0, 0, my,
- 0, 0, 0, 1
- };
- if ((QApplication::keyboardModifiers() & Qt::ShiftModifier) != 0) {
- vec[3] = 0;
- vec[7] = my;
- vec[11] = 0;
- }
- mat_mul(tm, tm, vec);
- object_trans_x += tm[3];
- object_trans_y += tm[7];
- object_trans_z += tm[11];
- }
- updateGL();
- emit doAnimateUpdate();
- }
- last_mouse_x = this_mouse_x;
- last_mouse_y = this_mouse_y;
-}
-
-void GLView::mouseReleaseEvent(QMouseEvent*)
-{
- mouse_drag_active = false;
- releaseMouse();
-}
-
contact: Jan Huwald // Impressum