From dbe5f0f150959a17f7ea238dc743b210a5ed0871 Mon Sep 17 00:00:00 2001
From: Christophe Geuzaine <cgeuzaine@ulg.ac.be>
Date: Fri, 16 Dec 2005 17:35:33 +0000
Subject: [PATCH] little hack to draw a gradient in the background. Nice for
flashy presentations ;-)
---
Common/Context.h | 3 +-
Common/DefaultOptions.h | 7 +++++
Common/Options.cpp | 40 ++++++++++++++++++++-----
Common/Options.h | 2 ++
Fltk/Callbacks.cpp | 3 +-
Fltk/GUI.cpp | 17 +++++++++--
Fltk/Opengl.cpp | 16 +---------
Fltk/Opengl_Window.cpp | 4 +--
Graphics/CreateFile.cpp | 5 ++--
Graphics/Draw.cpp | 65 +++++++++++++++++++++++++++++++++++++----
Graphics/Draw.h | 1 -
Graphics/Mesh.cpp | 5 ++--
12 files changed, 128 insertions(+), 40 deletions(-)
diff --git a/Common/Context.h b/Common/Context.h
index 0854705ba6..da75f02e39 100644
--- a/Common/Context.h
+++ b/Common/Context.h
@@ -117,6 +117,7 @@ public :
int threads, threads_lock; // threads?, lock (should be a mutex...)
int alpha; // enable alpha blending
double zoom_factor; // mouse2 zoom coefficient
+ int bg_gradient; // draw background gradient?
int fontsize; // font size for fltk UI
char *gl_font; // font for opengl graphics
@@ -233,7 +234,7 @@ public :
// color options
struct{
- unsigned int bg, fg, text, axes, small_axes;
+ unsigned int bg, bg_grad, fg, text, axes, small_axes;
unsigned int ambient_light[6], diffuse_light[6], specular_light[6];
struct{
unsigned int point, line, surface, volume;
diff --git a/Common/DefaultOptions.h b/Common/DefaultOptions.h
index cea0ec45a4..895b09b2b1 100644
--- a/Common/DefaultOptions.h
+++ b/Common/DefaultOptions.h
@@ -468,6 +468,8 @@ StringXNumber GeneralOptions_Number[] = {
"Number of tics on the Y-axis" },
{ F|O, "AxesTicsZ" , opt_general_axes_tics2 , 5. ,
"Number of tics on the Z-axis" },
+ { F|O, "BackgroundGradient" , opt_general_background_gradient , 0. ,
+ "Draw background gradient (0=none, 1=vertical, 2=horizontal)" },
{ F, "Clip0" , opt_general_clip0 , 0. ,
"Enable clipping plane 0 (Geometry=2^0, Mesh=2^1, View[i]=2^(2+i))" },
{ F, "Clip0A" , opt_general_clip0a , 1.0 ,
@@ -1360,6 +1362,11 @@ StringXColor GeneralOptions_Color[] = {
PACK_COLOR(255, 255, 255, 255),
PACK_COLOR(255, 255, 255, 255),
"Background color" },
+ { F|O, "BackgroundGradient" , opt_general_color_background_gradient ,
+ PACK_COLOR(0, 0, 125, 255),
+ PACK_COLOR(0, 0, 125, 255),
+ PACK_COLOR(125, 125, 125, 255),
+ "Background gradient color" },
{ F|O, "Foreground" , opt_general_color_foreground ,
PACK_COLOR(255, 255, 255, 255),
PACK_COLOR(0, 0, 0, 255),
diff --git a/Common/Options.cpp b/Common/Options.cpp
index 9ee439c206..b9a708d671 100644
--- a/Common/Options.cpp
+++ b/Common/Options.cpp
@@ -1,4 +1,4 @@
-// $Id: Options.cpp,v 1.263 2005-11-20 03:58:27 geuzaine Exp $
+// $Id: Options.cpp,v 1.264 2005-12-16 17:35:32 geuzaine Exp $
//
// Copyright (C) 1997-2005 C. Geuzaine, J.-F. Remacle
//
@@ -3098,6 +3098,20 @@ double opt_general_color_scheme(OPT_ARGS_NUM)
return CTX.color_scheme;
}
+double opt_general_background_gradient(OPT_ARGS_NUM)
+{
+ if(action & GMSH_SET){
+ CTX.bg_gradient = (int)val;
+ if(CTX.bg_gradient < 0 || CTX.bg_gradient > 2)
+ CTX.bg_gradient = 0;
+ }
+#if defined(HAVE_FLTK)
+ if(WID && (action & GMSH_GUI))
+ WID->gen_choice[5]->value(CTX.bg_gradient);
+#endif
+ return CTX.bg_gradient;
+}
+
double opt_general_trackball(OPT_ARGS_NUM)
{
if(action & GMSH_SET)
@@ -6715,12 +6729,22 @@ unsigned int opt_general_color_background(OPT_ARGS_COL)
return CTX.color.bg;
}
+unsigned int opt_general_color_background_gradient(OPT_ARGS_COL)
+{
+ if(action & GMSH_SET)
+ CTX.color.bg_grad = val;
+#if defined(HAVE_FLTK)
+ CCC(CTX.color.bg_grad, WID->gen_col[1]);
+#endif
+ return CTX.color.bg_grad;
+}
+
unsigned int opt_general_color_foreground(OPT_ARGS_COL)
{
if(action & GMSH_SET)
CTX.color.fg = val;
#if defined(HAVE_FLTK)
- CCC(CTX.color.fg, WID->gen_col[1]);
+ CCC(CTX.color.fg, WID->gen_col[2]);
#endif
return CTX.color.fg;
}
@@ -6730,7 +6754,7 @@ unsigned int opt_general_color_text(OPT_ARGS_COL)
if(action & GMSH_SET)
CTX.color.text = val;
#if defined(HAVE_FLTK)
- CCC(CTX.color.text, WID->gen_col[2]);
+ CCC(CTX.color.text, WID->gen_col[3]);
#endif
return CTX.color.text;
}
@@ -6740,7 +6764,7 @@ unsigned int opt_general_color_axes(OPT_ARGS_COL)
if(action & GMSH_SET)
CTX.color.axes = val;
#if defined(HAVE_FLTK)
- CCC(CTX.color.axes, WID->gen_col[3]);
+ CCC(CTX.color.axes, WID->gen_col[4]);
#endif
return CTX.color.axes;
}
@@ -6750,7 +6774,7 @@ unsigned int opt_general_color_small_axes(OPT_ARGS_COL)
if(action & GMSH_SET)
CTX.color.small_axes = val;
#if defined(HAVE_FLTK)
- CCC(CTX.color.small_axes, WID->gen_col[4]);
+ CCC(CTX.color.small_axes, WID->gen_col[5]);
#endif
return CTX.color.small_axes;
}
@@ -6761,7 +6785,7 @@ unsigned int opt_general_color_ambient_light(OPT_ARGS_COL)
for(int i = 0; i < 6; i++)
CTX.color.ambient_light[i] = val;
#if defined(HAVE_FLTK)
- CCC(CTX.color.ambient_light[0], WID->gen_col[5]);
+ CCC(CTX.color.ambient_light[0], WID->gen_col[6]);
#endif
return CTX.color.ambient_light[0];
}
@@ -6772,7 +6796,7 @@ unsigned int opt_general_color_diffuse_light(OPT_ARGS_COL)
for(int i = 0; i < 6; i++)
CTX.color.diffuse_light[i] = val;
#if defined(HAVE_FLTK)
- CCC(CTX.color.diffuse_light[0], WID->gen_col[6]);
+ CCC(CTX.color.diffuse_light[0], WID->gen_col[7]);
#endif
return CTX.color.diffuse_light[0];
}
@@ -6783,7 +6807,7 @@ unsigned int opt_general_color_specular_light(OPT_ARGS_COL)
for(int i = 0; i < 6; i++)
CTX.color.specular_light[i] = val;
#if defined(HAVE_FLTK)
- CCC(CTX.color.specular_light[0], WID->gen_col[7]);
+ CCC(CTX.color.specular_light[0], WID->gen_col[8]);
#endif
return CTX.color.specular_light[0];
}
diff --git a/Common/Options.h b/Common/Options.h
index 898bbc56ce..fb51fa38cc 100644
--- a/Common/Options.h
+++ b/Common/Options.h
@@ -282,6 +282,7 @@ double opt_general_line_width(OPT_ARGS_NUM);
double opt_general_shine(OPT_ARGS_NUM);
double opt_general_shine_exponent(OPT_ARGS_NUM);
double opt_general_color_scheme(OPT_ARGS_NUM);
+double opt_general_background_gradient(OPT_ARGS_NUM);
double opt_general_verbosity(OPT_ARGS_NUM);
double opt_general_nopopup(OPT_ARGS_NUM);
double opt_general_terminal(OPT_ARGS_NUM);
@@ -627,6 +628,7 @@ double opt_print_gif_transparent(OPT_ARGS_NUM);
// COLORS
unsigned int opt_general_color_background(OPT_ARGS_COL);
+unsigned int opt_general_color_background_gradient(OPT_ARGS_COL);
unsigned int opt_general_color_foreground(OPT_ARGS_COL);
unsigned int opt_general_color_text(OPT_ARGS_COL);
unsigned int opt_general_color_axes(OPT_ARGS_COL);
diff --git a/Fltk/Callbacks.cpp b/Fltk/Callbacks.cpp
index d797deff2f..8b7633e57d 100644
--- a/Fltk/Callbacks.cpp
+++ b/Fltk/Callbacks.cpp
@@ -1,4 +1,4 @@
-// $Id: Callbacks.cpp,v 1.384 2005-12-08 20:35:34 geuzaine Exp $
+// $Id: Callbacks.cpp,v 1.385 2005-12-16 17:35:32 geuzaine Exp $
//
// Copyright (C) 1997-2005 C. Geuzaine, J.-F. Remacle
//
@@ -1001,6 +1001,7 @@ void general_options_ok_cb(CALLBACK_ARGS)
opt_general_graphics_font(0, GMSH_SET, (char *)WID->gen_choice[1]->text());
opt_general_orthographic(0, GMSH_SET | GMSH_GUI, !WID->gen_choice[2]->value());
opt_general_axes(0, GMSH_SET, WID->gen_choice[4]->value());
+ opt_general_background_gradient(0, GMSH_SET, WID->gen_choice[5]->value());
}
void general_arrow_param_cb(CALLBACK_ARGS)
diff --git a/Fltk/GUI.cpp b/Fltk/GUI.cpp
index 66865a9ab0..049adbbe10 100644
--- a/Fltk/GUI.cpp
+++ b/Fltk/GUI.cpp
@@ -1,4 +1,4 @@
-// $Id: GUI.cpp,v 1.471 2005-12-08 20:35:34 geuzaine Exp $
+// $Id: GUI.cpp,v 1.472 2005-12-16 17:35:32 geuzaine Exp $
//
// Copyright (C) 1997-2005 C. Geuzaine, J.-F. Remacle
//
@@ -1985,10 +1985,21 @@ void GUI::create_option_window()
gen_choice[3]->align(FL_ALIGN_RIGHT);
gen_choice[3]->tooltip("(Alt+c)");
- Fl_Scroll *s = new Fl_Scroll(L + 2 * WB, 3 * WB + 2 * BH, IW + 20, height - 5 * WB - 2 * BH);
+ static Fl_Menu_Item menu_bg_grad[] = {
+ {"None", 0, 0, 0},
+ {"Vertical", 0, 0, 0},
+ {"Horizontal", 0, 0, 0},
+ {0}
+ };
+
+ gen_choice[5] = new Fl_Choice(L + 2 * WB, 2 * WB + 2 * BH, IW, BH, "Background gradient");
+ gen_choice[5]->menu(menu_bg_grad);
+ gen_choice[5]->align(FL_ALIGN_RIGHT);
+
+ Fl_Scroll *s = new Fl_Scroll(L + 2 * WB, 3 * WB + 3 * BH, IW + 20, height - 5 * WB - 3 * BH);
int i = 0;
while(GeneralOptions_Color[i].str) {
- gen_col[i] = new Fl_Button(L + 2 * WB, 3 * WB + (2 + i) * BH, IW, BH, GeneralOptions_Color[i].str);
+ gen_col[i] = new Fl_Button(L + 2 * WB, 3 * WB + (3 + i) * BH, IW, BH, GeneralOptions_Color[i].str);
gen_col[i]->callback(color_cb, (void *)GeneralOptions_Color[i].function);
i++;
}
diff --git a/Fltk/Opengl.cpp b/Fltk/Opengl.cpp
index 4aacc0108f..4a71647944 100644
--- a/Fltk/Opengl.cpp
+++ b/Fltk/Opengl.cpp
@@ -1,4 +1,4 @@
-// $Id: Opengl.cpp,v 1.55 2005-10-09 18:00:54 geuzaine Exp $
+// $Id: Opengl.cpp,v 1.56 2005-12-16 17:35:33 geuzaine Exp $
//
// Copyright (C) 1997-2005 C. Geuzaine, J.-F. Remacle
//
@@ -35,25 +35,11 @@ extern Context_T CTX;
// Draw specialization
-void InitOpengl(void)
-{
- WID->make_opengl_current();
- Orthogonalize(0, 0);
-}
-
void SetOpenglContext(void)
{
WID->make_opengl_current();
}
-void ClearOpengl(void)
-{
- glClearColor(UNPACK_RED(CTX.color.bg) / 255.,
- UNPACK_GREEN(CTX.color.bg) / 255.,
- UNPACK_BLUE(CTX.color.bg) / 255., 0.);
- glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
-}
-
void Draw(void)
{
WID->redraw_opengl();
diff --git a/Fltk/Opengl_Window.cpp b/Fltk/Opengl_Window.cpp
index 0a20247dae..7287e55275 100644
--- a/Fltk/Opengl_Window.cpp
+++ b/Fltk/Opengl_Window.cpp
@@ -1,4 +1,4 @@
-// $Id: Opengl_Window.cpp,v 1.50 2005-10-09 18:00:54 geuzaine Exp $
+// $Id: Opengl_Window.cpp,v 1.51 2005-12-16 17:35:33 geuzaine Exp $
//
// Copyright (C) 1997-2005 C. Geuzaine, J.-F. Remacle
//
@@ -63,8 +63,8 @@ void Opengl_Window::draw()
}
if(!ZoomMode) {
- Orthogonalize(0, 0);
ClearOpengl();
+ Orthogonalize(0, 0);
Draw3d();
Draw2d();
}
diff --git a/Graphics/CreateFile.cpp b/Graphics/CreateFile.cpp
index e40b49c45a..e5f9fca99b 100644
--- a/Graphics/CreateFile.cpp
+++ b/Graphics/CreateFile.cpp
@@ -1,4 +1,4 @@
-// $Id: CreateFile.cpp,v 1.69 2005-06-08 19:12:04 geuzaine Exp $
+// $Id: CreateFile.cpp,v 1.70 2005-12-16 17:35:33 geuzaine Exp $
//
// Copyright (C) 1997-2005 C. Geuzaine, J.-F. Remacle
//
@@ -39,8 +39,9 @@ extern Mesh M;
void FillBuffer(void)
{
- InitOpengl();
+ SetOpenglContext();
ClearOpengl();
+ Orthogonalize(0, 0);
Draw3d();
Draw2d();
}
diff --git a/Graphics/Draw.cpp b/Graphics/Draw.cpp
index 18c464b4ef..59c7d58472 100644
--- a/Graphics/Draw.cpp
+++ b/Graphics/Draw.cpp
@@ -1,4 +1,4 @@
-// $Id: Draw.cpp,v 1.80 2005-11-19 14:59:41 geuzaine Exp $
+// $Id: Draw.cpp,v 1.81 2005-12-16 17:35:33 geuzaine Exp $
//
// Copyright (C) 1997-2005 C. Geuzaine, J.-F. Remacle
//
@@ -121,6 +121,14 @@ void DrawPlugin(void (*draw)(void))
CTX.mesh.draw = 1;
}
+void ClearOpengl(void)
+{
+ glClearColor(UNPACK_RED(CTX.color.bg) / 255.,
+ UNPACK_GREEN(CTX.color.bg) / 255.,
+ UNPACK_BLUE(CTX.color.bg) / 255., 0.);
+ glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
+}
+
// Ortho
void Orthogonalize(int x, int y)
@@ -173,6 +181,8 @@ void Orthogonalize(int x, int y)
// buffer might become insufficient (at least with the "software"
// Mesa on Linux; with hardware acceleration or on Windows
// everyhting seems to be fine).
+
+ double gradient_zdist, gradient_xyfact;
if(CTX.ortho) {
double maxz = MAX(fabs(CTX.min[2]), fabs(CTX.max[2]));
if(maxz < CTX.lc) maxz = CTX.lc;
@@ -180,16 +190,61 @@ void Orthogonalize(int x, int y)
glOrtho(CTX.vxmin, CTX.vxmax, CTX.vymin, CTX.vymax, -clip, clip);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
+ gradient_zdist = 0.99 * clip;
+ gradient_xyfact = 1.;
}
else {
- glFrustum(CTX.vxmin, CTX.vxmax, CTX.vymin, CTX.vymax, CTX.lc,
- 100 * CTX.lc);
+ double near = 0.75 * CTX.clip_factor * CTX.lc;
+ double far = 75. * CTX.clip_factor * CTX.lc;
+
+ // recenter the model such that the perspective is always at the
+ // center of the screen. FIXME: this screws up the zoom, so let's
+ // leave it out for now
+ /*
+ double w = (CTX.max[0] - CTX.min[0]) / 2.;
+ double h = (CTX.max[1] - CTX.min[1]) / 2.;
+ CTX.vxmin -= w;
+ CTX.vxmax -= w;
+ CTX.vymin -= h;
+ CTX.vymax -= h;
+ */
+ double w = 0.;
+ double h = 0.;
+ glFrustum(CTX.vxmin, CTX.vxmax, CTX.vymin, CTX.vymax, near, far);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
- glTranslated(0.0, 0.0, -10 * CTX.lc);
- glScaled(10., 10., 10.);
+ glTranslated(-5 * w, -5 * h, -5 * near);
+ glScaled(5., 5., 5.);
+ gradient_zdist = 0.99 * far;
+ gradient_xyfact = far / near;
}
+ // draw background gradient
+ if(CTX.bg_gradient){
+ glPushMatrix();
+ glLoadIdentity();
+ glTranslated(0., 0., -gradient_zdist);
+ glShadeModel(GL_SMOOTH);
+ glBegin(GL_QUADS);
+ if(CTX.bg_gradient == 1){
+ glColor4ubv((GLubyte *) & CTX.color.bg);
+ glVertex2d(gradient_xyfact * CTX.vxmin, gradient_xyfact * CTX.vymin);
+ glVertex2d(gradient_xyfact * CTX.vxmax, gradient_xyfact * CTX.vymin);
+ glColor4ubv((GLubyte *) & CTX.color.bg_grad);
+ glVertex2d(gradient_xyfact * CTX.vxmax, gradient_xyfact * CTX.vymax);
+ glVertex2d(gradient_xyfact * CTX.vxmin, gradient_xyfact * CTX.vymax);
+ }
+ else{
+ glColor4ubv((GLubyte *) & CTX.color.bg);
+ glVertex2d(gradient_xyfact * CTX.vxmax, gradient_xyfact * CTX.vymin);
+ glVertex2d(gradient_xyfact * CTX.vxmax, gradient_xyfact * CTX.vymax);
+ glColor4ubv((GLubyte *) & CTX.color.bg_grad);
+ glVertex2d(gradient_xyfact * CTX.vxmin, gradient_xyfact * CTX.vymax);
+ glVertex2d(gradient_xyfact * CTX.vxmin, gradient_xyfact * CTX.vymin);
+ }
+ glEnd();
+ glPopMatrix();
+ }
}
// Init
diff --git a/Graphics/Draw.h b/Graphics/Draw.h
index e0486f162a..0c8804e5e1 100644
--- a/Graphics/Draw.h
+++ b/Graphics/Draw.h
@@ -30,7 +30,6 @@
#define SELECTION_BUFFER_SIZE 1024
-void InitOpengl(void);
void InitRenderModel(void);
void InitPosition(void);
diff --git a/Graphics/Mesh.cpp b/Graphics/Mesh.cpp
index c7ba19797b..7359b5f97a 100644
--- a/Graphics/Mesh.cpp
+++ b/Graphics/Mesh.cpp
@@ -1,4 +1,4 @@
-// $Id: Mesh.cpp,v 1.143 2005-12-05 20:36:55 geuzaine Exp $
+// $Id: Mesh.cpp,v 1.144 2005-12-16 17:35:33 geuzaine Exp $
//
// Copyright (C) 1997-2005 C. Geuzaine, J.-F. Remacle
//
@@ -59,7 +59,8 @@ void draw_polygon_2d(double r, double g, double b, int n,
int i;
CalculateMinMax(THEM->Points, NULL);
- InitOpengl();
+ SetOpenglContext();
+ Orthogonalize(0, 0);
InitPosition();
glDisable(GL_DEPTH_TEST);
--
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