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Trackball.h
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Gilles Marckmann authored
utils/api_demos/mainGlut : - introduction of a class Camera to use function glulookat() instead of rotation matrix in openGL viewport. - A special implementation of the Trackball for stereo mode to be consistent with other code (Abaqus, Catia, ...) - adaptation of Drawcontext in Camera mode (works for mainGlut but to be validated in gmsh
Gilles Marckmann authoredutils/api_demos/mainGlut : - introduction of a class Camera to use function glulookat() instead of rotation matrix in openGL viewport. - A special implementation of the Trackball for stereo mode to be consistent with other code (Abaqus, Catia, ...) - adaptation of Drawcontext in Camera mode (works for mainGlut but to be validated in gmsh
Colorbar_Window.cpp 17.91 KiB
// $Id: Colorbar_Window.cpp,v 1.46 2004-12-31 04:04:50 geuzaine Exp $
//
// Copyright (C) 1997-2004 C. Geuzaine, J.-F. Remacle
//
// 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.
//
// Please report all bugs and problems to <gmsh@geuz.org>.
// This class was inspired by the colorbar widget provided in Vis5d, a
// program for visualizing five dimensional gridded data sets
// Copyright (C) 1990 - 1995 Bill Hibbard, Brian Paul, Dave Santek,
// and Andre Battaiola.
#include "Gmsh.h"
#include "GmshUI.h"
#include "GUI.h"
#include "ColorTable.h"
#include "Colorbar_Window.h"
#include "Context.h"
extern Context_T CTX;
#define EPS 1.e-10
// This file defines the Colorbar_Window class (subclass of Fl_Window)
// The constructor
Colorbar_Window::Colorbar_Window(int x, int y, int w, int h, const char *l)
: Fl_Window(x, y, w, h, l)
{
ct = NULL;
label = NULL;
help_flag = 1;
font_height = CTX.fontsize;
marker_height = font_height;
wedge_height = marker_height;
marker_pos = 0;
minval = maxval = 0.0;
}
// Convert window X coordinate to color table index
int Colorbar_Window::x_to_index(int x)
{
int index;
index = (int)(x * (double)ct->size / (double)w());
if(index < 0)
index = 0;
else if(index >= ct->size)
index = ct->size - 1;
return index;
}
// Convert color table index to window X coordinate
int Colorbar_Window::index_to_x(int index){
int x;
x = (int)(index * (double)w() / (double)(ct->size - 1));
if(x >= w())
x = w() - 1;
return x;
}
// Convert a color intensity to a window Y coordinate
int Colorbar_Window::intensity_to_y(int intensity)
{
int y;
y = (int)(wedge_y - intensity * (double)wedge_y / 255.);
if(y < 0)
y = 0;
else if(y >= wedge_y)
y = wedge_y - 1;
return y;
}
// Convert a window Y coordinate to a color intensity
int Colorbar_Window::y_to_intensity(int y)
{
int intensity;
intensity = (int)((wedge_y - y) * 255. / (double)wedge_y);
if(intensity < 0)
intensity = 0;
else if(intensity > 255)
intensity = 255;
return intensity;
}
// Redraw part of the Colorbar_Window (between a and b)
void Colorbar_Window::redraw_range(int a, int b)
{
int i;
int x, y, px = 0, py = 0;
int x1, y1, x2, y2;
int intensity = 0;
double H, S, V;
make_current();
if(a < 0)
a = 0;
if(b >= ct->size)
b = ct->size - 1;
// calculate region to update
x1 = index_to_x(a);
x2 = index_to_x(b);
y1 = intensity_to_y(255);
y2 = intensity_to_y(0);
// erase region
fl_color(color_bg);
fl_rectf(x1, y1, x2 - x1 + 1, y2 - y1 + 1);
// redraw region of entries in interval [a,b]
if(a > 0)
a--;
if(b < ct->size - 1)
b++;
// draw red or hue levels
for(i = a; i <= b; i++) {
x = index_to_x(i); if(ct->ipar[COLORTABLE_MODE] == COLORTABLE_RGB)
intensity = UNPACK_RED(ct->table[i]);
else if(ct->ipar[COLORTABLE_MODE] == COLORTABLE_HSV) {
RGB_to_HSV(UNPACK_RED(ct->table[i]) / 255.,
UNPACK_GREEN(ct->table[i]) / 255.,
UNPACK_BLUE(ct->table[i]) / 255., &H, &S, &V);
intensity = (int)(H / 6. * 255. + EPS);
}
y = intensity_to_y(intensity);
if(i != a) {
fl_color(FL_RED);
fl_line(px, py, x, y);
}
px = x;
py = y;
}
// draw green or saturation levels
for(i = a; i <= b; i++) {
x = index_to_x(i);
if(ct->ipar[COLORTABLE_MODE] == COLORTABLE_RGB)
intensity = UNPACK_GREEN(ct->table[i]);
else if(ct->ipar[COLORTABLE_MODE] == COLORTABLE_HSV) {
RGB_to_HSV(UNPACK_RED(ct->table[i]) / 255.,
UNPACK_GREEN(ct->table[i]) / 255.,
UNPACK_BLUE(ct->table[i]) / 255., &H, &S, &V);
intensity = (int)(S * 255.);
}
y = intensity_to_y(intensity);
if(i != a) {
fl_color(FL_GREEN);
fl_line(px, py, x, y);
}
px = x;
py = y;
}
// draw blue or value levels
for(i = a; i <= b; i++) {
x = index_to_x(i);
if(ct->ipar[COLORTABLE_MODE] == COLORTABLE_RGB)
intensity = UNPACK_BLUE(ct->table[i]);
else if(ct->ipar[COLORTABLE_MODE] == COLORTABLE_HSV) {
RGB_to_HSV(UNPACK_RED(ct->table[i]) / 255.,
UNPACK_GREEN(ct->table[i]) / 255.,
UNPACK_BLUE(ct->table[i]) / 255., &H, &S, &V);
intensity = (int)(V * 255.);
}
y = intensity_to_y(intensity);
if(i != a) {
fl_color(FL_BLUE);
fl_line(px, py, x, y);
}
px = x;
py = y;
}
// draw alpha levels
for(i = a; i <= b; i++) {
x = index_to_x(i);
y = intensity_to_y(UNPACK_ALPHA(ct->table[i]));
if(i != a) {
fl_color(fl_contrast(FL_BLACK, color_bg));
fl_line(px, py, x, y);
}
px = x;
py = y;
}
// draw the color bar for(x = x1; x <= x2; x++) {
int r, g, b;
unsigned int color;
i = x_to_index(x);
color = ct->table[i];
r = UNPACK_RED(color);
g = UNPACK_GREEN(color);
b = UNPACK_BLUE(color);
fl_color(r, g, b);
fl_line(x, wedge_y, x, wedge_y + wedge_height - 1);
}
// print colortable mode and help
fl_font(FL_HELVETICA, font_height);
fl_color(fl_contrast(FL_BLACK, color_bg));
int xx0 = 10, xx1 = 13 * font_height, yy0 = 10;
if(help_flag) {
i = 0;
fl_draw("1, 2, ..., Ctrl+1, Ctrl+2, ...", xx0, yy0 + (i + 1) * font_height);
fl_draw("Select predefined colormap", xx1, yy0 + (i + 1) * font_height);
i++;
fl_draw("mouse1", xx0, yy0 + (i + 1) * font_height);
fl_draw("Draw red or hue channel", xx1, yy0 + (i + 1) * font_height);
i++;
fl_draw("mouse2", xx0, yy0 + (i + 1) * font_height);
fl_draw("Draw green or saturation channel", xx1, yy0 + (i + 1) * font_height);
i++;
fl_draw("mouse3", xx0, yy0 + (i + 1) * font_height);
fl_draw("Draw blue or value channel", xx1, yy0 + (i + 1) * font_height);
i++;
fl_draw("Ctrl+mouse1", xx0, yy0 + (i + 1) * font_height);
fl_draw("Draw alpha channel", xx1, yy0 + (i + 1) * font_height);
i++;
fl_draw("Ctrl+c, Ctrl+v, r", xx0, yy0 + (i + 1) * font_height);
fl_draw("Copy, paste or reset colormap", xx1, yy0 + (i + 1) * font_height);
i++;
fl_draw("m", xx0, yy0 + (i + 1) * font_height);
fl_draw("Toggle RGB/HSV mode", xx1, yy0 + (i + 1) * font_height);
i++;
fl_draw("left, right", xx0, yy0 + (i + 1) * font_height);
fl_draw("Translate abscissa", xx1, yy0 + (i + 1) * font_height);
i++;
fl_draw("Ctrl+left, Ctrl+right", xx0, yy0 + (i + 1) * font_height);
fl_draw("Rotate abscissa", xx1, yy0 + (i + 1) * font_height);
i++;
fl_draw("i, Ctrl+i", xx0, yy0 + (i + 1) * font_height);
fl_draw("Invert abscissa or ordinate", xx1, yy0 + (i + 1) * font_height);
i++;
fl_draw("up, down", xx0, yy0 + (i + 1) * font_height);
fl_draw("Modify curvature of color channels", xx1, yy0 + (i + 1) * font_height);
i++;
fl_draw("a, Ctrl+a", xx0, yy0 + (i + 1) * font_height);
fl_draw("Modify alpha coefficient", xx1, yy0 + (i + 1) * font_height);
i++;
fl_draw("p, Ctrl+p", xx0, yy0 + (i + 1) * font_height);
fl_draw("Modify alpha channel power law", xx1, yy0 + (i + 1) * font_height);
i++;
fl_draw("b, Ctrl+b", xx0, yy0 + (i + 1) * font_height);
fl_draw("Modify gamma correction", xx1, yy0 + (i + 1) * font_height);
i++;
fl_draw("h", xx0, yy0 + (i + 1) * font_height);
fl_draw("Show this help message", xx1, yy0 + (i + 1) * font_height);
i++;
}
else if(ct->ipar[COLORTABLE_MODE] == COLORTABLE_RGB)
fl_draw("RGB", xx0, yy0 + font_height);
else if(ct->ipar[COLORTABLE_MODE] == COLORTABLE_HSV)
fl_draw("HSV", xx0, yy0 + font_height);
}
// Redraw the marker and the text
void Colorbar_Window::redraw_marker()
{
int x, y0, y1;
char str[50];
double val;
make_current();
y0 = marker_y;
y1 = h() - 1;
fl_color(color_bg);
fl_rectf(0, y0, w(), y1 - y0 + 1);
// draw marker below color wedge
x = index_to_x(marker_pos);
fl_color(fl_contrast(FL_BLACK, color_bg));
fl_line(x, marker_y, x, marker_y + marker_height);
fl_line(x, marker_y, x - 3, marker_y + 6);
fl_line(x, marker_y, x + 3, marker_y + 6);
// draw marker value
fl_font(FL_HELVETICA, font_height);
val =
minval + (maxval - minval) * ((double)marker_pos / (double)(ct->size - 1));
sprintf(str, "%g", val);
fl_draw(str, 10, label_y);
}
// Draw everything
void Colorbar_Window::draw()
{
if(ct) {
label_y = h() - 5;
marker_y = label_y - marker_height - font_height;
wedge_y = marker_y - wedge_height;
color_bg = fl_color_cube(UNPACK_RED(CTX.color.bg) * FL_NUM_RED / 256,
UNPACK_GREEN(CTX.color.bg) * FL_NUM_GREEN / 256,
UNPACK_BLUE(CTX.color.bg) * FL_NUM_BLUE / 256);
redraw_range(0, ct->size - 1);
redraw_marker();
}
}
// Update
void Colorbar_Window::update(char *name, double min, double max,
GmshColorTable * table, int *changed)
{
label = name;
ct = table;
viewchanged = changed;
minval = min;
maxval = max;
redraw();
}
// Handle
int Colorbar_Window::handle(int event)
{
static int p1 = 0, p2 = 0, p3 = 0, p4 = 0;
static int pentry, move_marker;
int i, ibut, xpos, ypos, modify, entry, compute;
modify = 0; compute = 0;
switch (event) {
case FL_ENTER:
take_focus(); //force keyboard focus on the ColorbarWindow
return 1;
case FL_LEAVE:
case FL_FOCUS:
case FL_UNFOCUS:
return 1;
case FL_SHORTCUT:
case FL_KEYBOARD:
if(Fl::test_shortcut('0')) {
ColorTable_InitParam(0, ct);
compute = 1;
}
else if(Fl::test_shortcut('1')) {
ColorTable_InitParam(1, ct);
compute = 1;
}
else if(Fl::test_shortcut('2')) {
ColorTable_InitParam(2, ct);
compute = 1;
}
else if(Fl::test_shortcut('3')) {
ColorTable_InitParam(3, ct);
compute = 1;
}
else if(Fl::test_shortcut('4')) {
ColorTable_InitParam(4, ct);
compute = 1;
}
else if(Fl::test_shortcut('5')) {
ColorTable_InitParam(5, ct);
compute = 1;
}
else if(Fl::test_shortcut('6')) {
ColorTable_InitParam(6, ct);
compute = 1;
}
else if(Fl::test_shortcut('7')) {
ColorTable_InitParam(7, ct);
compute = 1;
}
else if(Fl::test_shortcut('8')) {
ColorTable_InitParam(8, ct);
compute = 1;
}
else if(Fl::test_shortcut('9')) {
ColorTable_InitParam(9, ct);
compute = 1;
}
else if(Fl::test_shortcut(FL_CTRL + '0')) {
ColorTable_InitParam(10, ct);
compute = 1;
}
else if(Fl::test_shortcut(FL_CTRL + '1')) {
ColorTable_InitParam(11, ct);
compute = 1;
}
else if(Fl::test_shortcut(FL_CTRL + '2')) {
ColorTable_InitParam(12, ct);
compute = 1;
}
else if(Fl::test_shortcut(FL_CTRL + '3')) {
ColorTable_InitParam(13, ct);
compute = 1; }
else if(Fl::test_shortcut(FL_CTRL + '4')) {
ColorTable_InitParam(14, ct);
compute = 1;
}
else if(Fl::test_shortcut(FL_CTRL + '5')) {
ColorTable_InitParam(15, ct);
compute = 1;
}
else if(Fl::test_shortcut(FL_CTRL + '6')) {
ColorTable_InitParam(16, ct);
compute = 1;
}
else if(Fl::test_shortcut(FL_CTRL + '7')) {
ColorTable_InitParam(17, ct);
compute = 1;
}
else if(Fl::test_shortcut(FL_CTRL + '8')) {
ColorTable_InitParam(18, ct);
compute = 1;
}
else if(Fl::test_shortcut(FL_CTRL + '9')) {
ColorTable_InitParam(19, ct);
compute = 1;
}
else if(Fl::test_shortcut(FL_CTRL + 'c')) {
ColorTable_Copy(ct);
}
else if(Fl::test_shortcut(FL_CTRL + 'v')) {
ColorTable_Paste(ct);
draw();
*viewchanged = 1;
}
else if(Fl::test_shortcut('h')) {
help_flag = !help_flag;
draw();
}
else if(Fl::test_shortcut('r')) {
ColorTable_InitParam(ct->ipar[COLORTABLE_NUMBER], ct);
compute = 1;
}
else if(Fl::test_shortcut('m')) {
if(ct->ipar[COLORTABLE_MODE] == COLORTABLE_RGB)
ct->ipar[COLORTABLE_MODE] = COLORTABLE_HSV;
else
ct->ipar[COLORTABLE_MODE] = COLORTABLE_RGB;
draw();
}
else if(Fl::test_shortcut('i')) {
ct->ipar[COLORTABLE_SWAP] = !ct->ipar[COLORTABLE_SWAP];
compute = 1;
}
else if(Fl::test_shortcut(FL_CTRL + 'i')) {
ct->ipar[COLORTABLE_INVERT] = !ct->ipar[COLORTABLE_INVERT];
compute = 1;
}
else if(Fl::test_shortcut('b')) {
ct->dpar[COLORTABLE_BETA] += 0.05;
if(ct->dpar[COLORTABLE_BETA] > 1.0)
ct->dpar[COLORTABLE_BETA] = 1.0;
compute = 1;
}
else if(Fl::test_shortcut(FL_CTRL + 'b')) {
ct->dpar[COLORTABLE_BETA] -= 0.05;
if(ct->dpar[COLORTABLE_BETA] < -1.0)
ct->dpar[COLORTABLE_BETA] = -1.0;
compute = 1;
}
else if(Fl::test_shortcut('a')) {
ct->dpar[COLORTABLE_ALPHA] -= 0.05; if(ct->dpar[COLORTABLE_ALPHA] < 0.0)
ct->dpar[COLORTABLE_ALPHA] = 0.0;
compute = 1;
}
else if(Fl::test_shortcut(FL_CTRL + 'a')) {
ct->dpar[COLORTABLE_ALPHA] += 0.05;
if(ct->dpar[COLORTABLE_ALPHA] > 1.0)
ct->dpar[COLORTABLE_ALPHA] = 1.0;
compute = 1;
}
else if(Fl::test_shortcut('p')) {
ct->dpar[COLORTABLE_ALPHAPOW] += 0.05;
compute = 1;
}
else if(Fl::test_shortcut(FL_CTRL + 'p')) {
ct->dpar[COLORTABLE_ALPHAPOW] -= 0.05;
compute = 1;
}
else if(Fl::test_shortcut(FL_Left)) {
ct->dpar[COLORTABLE_BIAS] -= 0.05;
compute = 1;
}
else if(Fl::test_shortcut(FL_CTRL + FL_Left)) {
ct->ipar[COLORTABLE_ROTATION] += 5;
if(ct->ipar[COLORTABLE_ROTATION] > ct->size - 1)
ct->ipar[COLORTABLE_ROTATION] -= ct->size - 1;
compute = 1;
}
else if(Fl::test_shortcut(FL_Right)) {
ct->dpar[COLORTABLE_BIAS] += 0.05;
compute = 1;
}
else if(Fl::test_shortcut(FL_CTRL + FL_Right)) {
ct->ipar[COLORTABLE_ROTATION] -= 5;
if(ct->ipar[COLORTABLE_ROTATION] < -(ct->size - 1))
ct->ipar[COLORTABLE_ROTATION] += ct->size - 1;
compute = 1;
}
else if(Fl::test_shortcut(FL_Up)) {
ct->dpar[COLORTABLE_CURVATURE] -= 0.05;
compute = 1;
}
else if(Fl::test_shortcut(FL_Down)) {
ct->dpar[COLORTABLE_CURVATURE] += 0.05;
compute = 1;
}
else {
return Fl_Window::handle(event);
}
if(compute) {
ColorTable_Recompute(ct);
draw();
*viewchanged = 1;
set_changed();
}
return 1;
case FL_PUSH:
ibut = Fl::event_button();
xpos = Fl::event_x();
ypos = Fl::event_y();
if(help_flag) {
help_flag = 0;
draw();
}
// change color function or marker position
if(ypos < wedge_y)
move_marker = 0;
else move_marker = 1;
// determine which curve to modify
if(Fl::event_state(FL_CTRL))
p4 = 1;
else if(ibut == 1 && !Fl::event_state(FL_SHIFT)
&& !Fl::event_state(FL_ALT))
p1 = 1;
else if(ibut == 2 || (ibut == 1 && Fl::event_state(FL_SHIFT)))
p2 = 1;
else
p3 = 1;
pentry = x_to_index(xpos);
modify = 1;
break;
case FL_RELEASE:
ibut = Fl::event_button();
xpos = Fl::event_x();
ypos = Fl::event_y();
p1 = 0;
p2 = 0;
p3 = 0;
p4 = 0;
break;
case FL_DRAG:
ibut = Fl::event_button();
xpos = Fl::event_x();
ypos = Fl::event_y();
modify = 1;
break;
default:
// don't know what to do with the event: passing it to parent
return Fl_Window::handle(event);
}
// Modify one or more of the color curves
if(modify && (p1 || p2 || p3 || p4)) {
// calculate which entry in color table to change
entry = x_to_index(xpos);
// update
if(move_marker) {
// changing marker position
marker_pos = entry;
redraw_marker();
}
else {
// changing color graph
int a, b, value;
*viewchanged = 1;
set_changed();
value = y_to_intensity(ypos);
if(pentry <= entry) {
a = pentry;
b = entry;
}
else {
a = entry;
b = pentry;
}
// update entries from 'pentry' to 'entry'
for(i = a; i <= b; i++) { int red, green, blue, alpha;
double R, G, B, H, S, V;
red = UNPACK_RED(ct->table[i]);
green = UNPACK_GREEN(ct->table[i]);
blue = UNPACK_BLUE(ct->table[i]);
alpha = UNPACK_ALPHA(ct->table[i]);
if(ct->ipar[COLORTABLE_MODE] == COLORTABLE_RGB) {
if(p1) {
red = value;
}
if(p2) {
green = value;
}
if(p3) {
blue = value;
}
if(p4) {
alpha = value;
}
}
else if(ct->ipar[COLORTABLE_MODE] == COLORTABLE_HSV) {
RGB_to_HSV((double)red / 255., (double)green / 255.,
(double)blue / 255., &H, &S, &V);
if(p1) {
H = 6. * (double)value / 255. + EPS;
}
if(p2) {
S = (double)value / 255.;
}
if(p3) {
V = (double)value / 255.;
}
if(p4) {
alpha = value;
}
HSV_to_RGB(H, S, V, &R, &G, &B);
red = (int)(255 * R);
green = (int)(255 * G);
blue = (int)(255 * B);
}
ct->table[i] = PACK_COLOR(red, green, blue, alpha);
}
// redraw the color curves
if(pentry < entry)
redraw_range(pentry - 1, entry + 1);
else
redraw_range(entry - 1, pentry + 1);
pentry = entry;
}
return 1;
}
return 1;
}