1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/gui.cc	Tue Oct 26 08:49:09 2010 +0300
     1.3 @@ -0,0 +1,295 @@
     1.4 +#include <stdio.h>
     1.5 +
     1.6 +#ifndef __APPLE__
     1.7 +#include <GL/glut.h>
     1.8 +#else
     1.9 +#include <GLUT/glut.h>
    1.10 +#endif
    1.11 +
    1.12 +#include <vmath.h>
    1.13 +#include <ubertk.h>
    1.14 +#include "gui.h"
    1.15 +#include "utktext.h"
    1.16 +#include "sdr.h"
    1.17 +
    1.18 +#define TEXT_PT_SIZE	18
    1.19 +
    1.20 +void huecb(utk::Event *ev, void *cls);
    1.21 +static void cbfunc(utk::Event *ev, void *cls);
    1.22 +
    1.23 +void utk_color(int r, int g, int b, int a);
    1.24 +void utk_clip(int x1, int y1, int x2, int y2);
    1.25 +void utk_image(int x, int y, const void *pix, int xsz, int ysz);
    1.26 +
    1.27 +void utk_rect(int x1, int y1, int x2, int y2);
    1.28 +void utk_line(int x1, int y1, int x2, int y2, int width);
    1.29 +
    1.30 +void utk_text(int x, int y, const char *txt, int sz);
    1.31 +int utk_text_spacing();
    1.32 +int utk_text_width(const char *txt, int sz);
    1.33 +
    1.34 +
    1.35 +int xsz, ysz;
    1.36 +static utk::Container *utkroot;
    1.37 +static float max_descent;
    1.38 +utk::Window *win_seed, *win_material;
    1.39 +
    1.40 +
    1.41 +extern unsigned int sdr;
    1.42 +extern Vector4 seed;
    1.43 +extern int iter;
    1.44 +extern float err_thres;
    1.45 +extern float reflectivity;
    1.46 +extern Vector3 color;
    1.47 +
    1.48 +int gui_init(int width, int height)
    1.49 +{
    1.50 +	xsz = width;
    1.51 +	ysz = height;
    1.52 +
    1.53 +	if(!CreateFont("georgia.ttf", TEXT_PT_SIZE)) {
    1.54 +		fprintf(stderr, "failed to load font\n");
    1.55 +		return -1;
    1.56 +	}
    1.57 +	max_descent = GetMaxDescent();
    1.58 +
    1.59 +	utk::gfx::color = utk_color;
    1.60 +	utk::gfx::clip = utk_clip;
    1.61 +	utk::gfx::image = utk_image;
    1.62 +	utk::gfx::rect = utk_rect;
    1.63 +	utk::gfx::line = utk_line;
    1.64 +	utk::gfx::text = utk_text;
    1.65 +	utk::gfx::text_spacing = utk_text_spacing;
    1.66 +	utk::gfx::text_width = utk_text_width;
    1.67 +
    1.68 +	utkroot = utk::init(xsz, ysz);
    1.69 +
    1.70 +	win_seed = utk::create_window(utkroot, 5, 25, 220, 175, "julia parameters");
    1.71 +	win_seed->set_alpha(128);
    1.72 +	win_seed->show();
    1.73 +
    1.74 +	utk::VBox *vbox = utk::create_vbox(win_seed);
    1.75 +	utk::HBox *hbox;
    1.76 +
    1.77 +	hbox = utk::create_hbox(vbox);
    1.78 +	utk::create_label(hbox, "seed x");
    1.79 +	utk::create_slider(hbox, -1.0, 1.0, cbfunc, (void*)0)->set_value(seed.x);
    1.80 +	hbox = utk::create_hbox(vbox);
    1.81 +	utk::create_label(hbox, "seed y");
    1.82 +	utk::create_slider(hbox, -1.0, 1.0, cbfunc, (void*)1)->set_value(seed.y);
    1.83 +	hbox = utk::create_hbox(vbox);
    1.84 +	utk::create_label(hbox, "seed z");
    1.85 +	utk::create_slider(hbox, -1.0, 1.0, cbfunc, (void*)2)->set_value(seed.z);
    1.86 +	hbox = utk::create_hbox(vbox);
    1.87 +	utk::create_label(hbox, "seed w");
    1.88 +	utk::create_slider(hbox, -1.0, 1.0, cbfunc, (void*)3)->set_value(seed.w);
    1.89 +
    1.90 +	hbox = utk::create_hbox(vbox);
    1.91 +	utk::create_label(hbox, "iterations");
    1.92 +	utk::Slider *iter_slider = utk::create_slider(hbox, 0, 32, cbfunc, (void*)5);
    1.93 +	iter_slider->set_value(iter);
    1.94 +	iter_slider->set_vis_decimal(0);
    1.95 +
    1.96 +	hbox = utk::create_hbox(vbox);
    1.97 +	utk::create_label(hbox, "max error");
    1.98 +	utk::Slider *err_slider = utk::create_slider(hbox, 0, 0.075, cbfunc, (void*)6);
    1.99 +	err_slider->set_value(err_thres);
   1.100 +	err_slider->set_vis_decimal(4);
   1.101 +
   1.102 +	win_material = utk::create_window(utkroot, 250, 25, 220, 210, "material");
   1.103 +	win_material->set_alpha(128);
   1.104 +	win_material->show();
   1.105 +	((utk::WinFrame*)win_material->get_parent())->set_shade(true);
   1.106 +
   1.107 +	vbox = utk::create_vbox(win_material);
   1.108 +
   1.109 +	utk::ColorBox *colbox = new utk::ColorBox;
   1.110 +	vbox->add_child(colbox);
   1.111 +	utk::HueBox *huebox = new utk::HueBox;
   1.112 +	vbox->add_child(huebox);
   1.113 +	huebox->set_callback(utk::EVENT_MODIFY, huecb, colbox);
   1.114 +
   1.115 +	float hue, sat, val;
   1.116 +	utk::rgb_to_hsv(color.x, color.y, color.z, &hue, &sat, &val);
   1.117 +	colbox->set_color_hsv(hue, sat, val);
   1.118 +	huebox->set_h(hue);
   1.119 +
   1.120 +	hbox = utk::create_hbox(vbox);
   1.121 +	utk::create_label(hbox, "reflectivity");
   1.122 +	utk::create_slider(hbox, 0, 1.0, cbfunc, (void*)4)->set_value(reflectivity);
   1.123 +
   1.124 +	return 0;
   1.125 +}
   1.126 +
   1.127 +void gui_draw()
   1.128 +{
   1.129 +	glMatrixMode(GL_MODELVIEW);
   1.130 +	glPushMatrix();
   1.131 +	glLoadIdentity();
   1.132 +	glMatrixMode(GL_PROJECTION);
   1.133 +	glPushMatrix();
   1.134 +	glLoadIdentity();
   1.135 +
   1.136 +	glPushAttrib(GL_ENABLE_BIT);
   1.137 +	glDisable(GL_LIGHTING);
   1.138 +	glDisable(GL_DEPTH_TEST);
   1.139 +	glDisable(GL_CULL_FACE);
   1.140 +	glEnable(GL_BLEND);
   1.141 +
   1.142 +	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
   1.143 +
   1.144 +	utk::draw();
   1.145 +
   1.146 +	glPopAttrib();
   1.147 +
   1.148 +	glMatrixMode(GL_PROJECTION);
   1.149 +	glPopMatrix();
   1.150 +	glMatrixMode(GL_MODELVIEW);
   1.151 +	glPopMatrix();
   1.152 +}
   1.153 +
   1.154 +void gui_set_visible(bool vis)
   1.155 +{
   1.156 +	if(vis) {
   1.157 +		win_seed->show();
   1.158 +		win_material->show();
   1.159 +	} else {
   1.160 +		win_seed->hide();
   1.161 +		win_material->hide();
   1.162 +	}
   1.163 +}
   1.164 +
   1.165 +void huecb(utk::Event *ev, void *cls)
   1.166 +{
   1.167 +	utk::HueBox *huebox = (utk::HueBox*)ev->widget;
   1.168 +	utk::ColorBox *colbox = (utk::ColorBox*)cls;
   1.169 +
   1.170 +	colbox->set_h(huebox->get_h());
   1.171 +}
   1.172 +
   1.173 +void cbfunc(utk::Event *ev, void *cls)
   1.174 +{
   1.175 +	int id = (int)(intptr_t)cls;
   1.176 +
   1.177 +	switch(id) {
   1.178 +	case 0:
   1.179 +	case 1:
   1.180 +	case 2:
   1.181 +	case 3:
   1.182 +		{
   1.183 +			utk::Slider *slider = (utk::Slider*)ev->widget;
   1.184 +
   1.185 +			seed[id] = slider->get_value();
   1.186 +			set_uniform_float4(sdr, "seed", seed.x, seed.y, seed.z, seed.w);
   1.187 +			glutPostRedisplay();
   1.188 +		}
   1.189 +		break;
   1.190 +
   1.191 +	case 4:
   1.192 +		{
   1.193 +			utk::Slider *slider = (utk::Slider*)ev->widget;
   1.194 +
   1.195 +			reflectivity = slider->get_value();
   1.196 +			set_uniform_float(sdr, "reflectivity", reflectivity);
   1.197 +			glutPostRedisplay();
   1.198 +		}
   1.199 +		break;
   1.200 +
   1.201 +	case 5:
   1.202 +		{
   1.203 +			utk::Slider *slider = (utk::Slider*)ev->widget;
   1.204 +
   1.205 +			iter = (int)slider->get_value();
   1.206 +			set_uniform_int(sdr, "iter", iter);
   1.207 +			glutPostRedisplay();
   1.208 +		}
   1.209 +		break;
   1.210 +
   1.211 +	case 6:
   1.212 +		{
   1.213 +			utk::Slider *slider = (utk::Slider*)ev->widget;
   1.214 +
   1.215 +			err_thres = slider->get_value();
   1.216 +			set_uniform_float(sdr, "err_thres", err_thres);
   1.217 +			glutPostRedisplay();
   1.218 +		}
   1.219 +		break;
   1.220 +
   1.221 +	default:
   1.222 +		fprintf(stderr, "unhandled callback (id: %d)\n", id);
   1.223 +		break;
   1.224 +	}
   1.225 +}
   1.226 +
   1.227 +
   1.228 +#define CONVX(x)	(2.0 * (float)(x) / (float)xsz - 1.0)
   1.229 +#define CONVY(y)	(1.0 - 2.0 * (float)(y) / (float)ysz)
   1.230 +
   1.231 +void utk_color(int r, int g, int b, int a)
   1.232 +{
   1.233 +	glColor4ub(r, g, b, a);
   1.234 +	SetTextColor(Color(r / 255.0, g / 255.0, b / 255.0, a / 255.0));
   1.235 +}
   1.236 +
   1.237 +void utk_clip(int x1, int y1, int x2, int y2)
   1.238 +{
   1.239 +	if(x1 == x2 && y1 == y2 && x1 == y1 && x1 == 0) {
   1.240 +		glDisable(GL_SCISSOR_TEST);
   1.241 +	} else {
   1.242 +		glEnable(GL_SCISSOR_TEST);
   1.243 +	}
   1.244 +	glScissor(x1, ysz - y2, x2 - x1, y2 - y1);
   1.245 +}
   1.246 +
   1.247 +void utk_image(int x, int y, const void *pix, int w, int h)
   1.248 +{
   1.249 +	glPixelZoom(1, -1);
   1.250 +	glRasterPos2f(CONVX(x), CONVY(y));
   1.251 +	glDrawPixels(w, h, GL_BGRA, GL_UNSIGNED_BYTE, pix);
   1.252 +}
   1.253 +
   1.254 +void utk_rect(int x1, int y1, int x2, int y2)
   1.255 +{
   1.256 +	glRectf(CONVX(x1), CONVY(y1), CONVX(x2), CONVY(y2));
   1.257 +}
   1.258 +
   1.259 +void utk_line(int x1, int y1, int x2, int y2, int width)
   1.260 +{
   1.261 +	glPushAttrib(GL_LINE_BIT);
   1.262 +
   1.263 +	glLineWidth((float)width);
   1.264 +	glBegin(GL_LINES);
   1.265 +	glVertex2f(CONVX(x1), CONVY(y1));
   1.266 +	glVertex2f(CONVX(x2), CONVY(y2));
   1.267 +	glEnd();
   1.268 +
   1.269 +	glPopAttrib();
   1.270 +}
   1.271 +
   1.272 +void utk_text(int x, int y, const char *txt, int sz)
   1.273 +{
   1.274 +	float fx = (float)x / (float)xsz;
   1.275 +	float fy = (float)y / (float)ysz;
   1.276 +
   1.277 +	SetTextPos(Vector2(fx, fy - max_descent));
   1.278 +	//SetTextPos(Vector2(0.25, 0.25));
   1.279 +	SetTextSize((float)sz / (float)TEXT_PT_SIZE);
   1.280 +	PrintString(txt);
   1.281 +}
   1.282 +
   1.283 +int utk_text_spacing()
   1.284 +{
   1.285 +	return (int)(GetLineAdvance() * (float)ysz);
   1.286 +}
   1.287 +
   1.288 +int utk_text_width(const char *txt, int sz)
   1.289 +{
   1.290 +	float prev_sz = GetTextSize();
   1.291 +	SetTextSize((float)sz / (float)TEXT_PT_SIZE);
   1.292 +
   1.293 +	int width = (int)(GetTextWidth(txt) * (float)xsz);
   1.294 +
   1.295 +	SetTextSize(prev_sz);
   1.296 +	return width;
   1.297 +}
   1.298 +