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 +

     2.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     2.2 +++ b/src/gui.h	Tue Oct 26 08:49:09 2010 +0300
     2.3 @@ -0,0 +1,10 @@
     2.4 +#ifndef GUI_H_
     2.5 +#define GUI_H_
     2.6 +
     2.7 +#include <ubertk.h>
     2.8 +
     2.9 +int gui_init(int xsz, int ysz);
    2.10 +void gui_draw();
    2.11 +void gui_set_visible(bool vis);
    2.12 +
    2.13 +#endif

     3.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     3.2 +++ b/src/utktext.cc	Tue Oct 26 08:49:09 2010 +0300
     3.3 @@ -0,0 +1,444 @@
     3.4 +#include <math.h>
     3.5 +#include <ctype.h>
     3.6 +#define GL_GLEXT_PROTOTYPES
     3.7 +#if defined(__APPLE__) && defined(__MACH__)
     3.8 +#include <GLUT/glut.h>
     3.9 +#else
    3.10 +#include <GL/glut.h>
    3.11 +#endif
    3.12 +#include <ft2build.h>
    3.13 +#include FT_FREETYPE_H
    3.14 +#include <vmath.h>
    3.15 +#include "utktext.h"
    3.16 +#include "utk_common.h"
    3.17 +
    3.18 +#ifndef GL_BGRA
    3.19 +#define GL_BGRA	0x80E1
    3.20 +#endif
    3.21 +
    3.22 +#ifndef GL_ABGR
    3.23 +#define GL_ABGR	0x8000
    3.24 +#endif
    3.25 +
    3.26 +#ifdef UTK_BIG_ENDIAN
    3.27 +#define PIXFMT	GL_ABGR
    3.28 +#else
    3.29 +#define PIXFMT	GL_BGRA
    3.30 +#endif
    3.31 +
    3.32 +#define MAX_CHARS		128
    3.33 +#define MAX_IMG_WIDTH	1024
    3.34 +#define SIZE_PIXELS(x)	((x) / 64)
    3.35 +
    3.36 +struct Font {
    3.37 +	unsigned int tex_id;
    3.38 +	float scale;	// this compensates if a higher res font is loaded in its stead, with a new CreateFont
    3.39 +	float line_adv;	// vertical advance to go to the next line
    3.40 +	struct {
    3.41 +		Vector2 pos, size;		// glyph position (from origin) and size in normalized coords [0, 1]
    3.42 +		float advance;			// advance in normalized coords
    3.43 +		Vector2 tc_pos, tc_sz;	// tex coord box pos/size
    3.44 +	} glyphs[MAX_CHARS];
    3.45 +};
    3.46 +
    3.47 +static void BlitFontGlyph(Font *fnt, int x, int y, FT_GlyphSlot glyph, unsigned int *img, int xsz, int ysz);
    3.48 +static void CleanUp();
    3.49 +
    3.50 +static FT_Library ft;
    3.51 +static Vector2 text_pos;
    3.52 +static float text_size = 1.0;
    3.53 +static Color text_color;
    3.54 +static Font *act_fnt;
    3.55 +
    3.56 +#if !defined(GLIBC) && !defined(__GLIBC__)
    3.57 +float log2(float x) {
    3.58 +	float res = 0.0;
    3.59 +	while(x > 1.0) {
    3.60 +		x /= 2.0;
    3.61 +		res += 1.0;
    3.62 +	}
    3.63 +	return res;
    3.64 +}
    3.65 +#endif	// _MSC_VER
    3.66 +
    3.67 +
    3.68 +static inline int NextPow2(int x)
    3.69 +{
    3.70 +	float lg2 = log2((float)x);
    3.71 +	return (int)pow(2.0f, (int)ceil(lg2));
    3.72 +}
    3.73 +
    3.74 +
    3.75 +unsigned int CreateFont(const char *fname, int font_size)
    3.76 +{
    3.77 +	if(!ft) {
    3.78 +		if(FT_Init_FreeType(&ft) != 0) {
    3.79 +			fprintf(stderr, "failed to initialize freetype\n");
    3.80 +			return 0;
    3.81 +		}
    3.82 +		atexit(CleanUp);
    3.83 +	}
    3.84 +
    3.85 +	FT_Face face;
    3.86 +	if(FT_New_Face(ft, fname, 0, &face) != 0) {
    3.87 +		fprintf(stderr, "failed to load font: %s\n", fname);
    3.88 +		return 0;
    3.89 +	}
    3.90 +
    3.91 +	FT_Set_Pixel_Sizes(face, 0, font_size);
    3.92 +
    3.93 +	Font *fnt = new Font;
    3.94 +	int max_width = MAX_CHARS * SIZE_PIXELS(face->bbox.xMax - face->bbox.xMin);
    3.95 +	int foo_xsz = MAX_IMG_WIDTH;
    3.96 +	int foo_ysz = SIZE_PIXELS(face->bbox.yMax - face->bbox.yMin) * max_width / foo_xsz;
    3.97 +
    3.98 +	int tex_xsz = NextPow2(foo_xsz);
    3.99 +	int tex_ysz = NextPow2(foo_ysz);
   3.100 +
   3.101 +	unsigned int *img;
   3.102 +	img = new unsigned int[tex_xsz * tex_ysz];
   3.103 +	memset(img, 0, tex_xsz * tex_ysz * sizeof *img);
   3.104 +
   3.105 +	extern int xsz, ysz;
   3.106 +	int vport_xsz = xsz, vport_ysz = ysz;
   3.107 +
   3.108 +	int max_glyph_y = 0;
   3.109 +	int max_glyph_x = 0;
   3.110 +	for(int i=0; i<MAX_CHARS; i++) {
   3.111 +		FT_Load_Char(face, i, 0);
   3.112 +		int width = SIZE_PIXELS(face->glyph->metrics.width);
   3.113 +		int height = SIZE_PIXELS(face->glyph->metrics.height);
   3.114 +		
   3.115 +		if(height > max_glyph_y) {
   3.116 +			max_glyph_y = height;
   3.117 +		}
   3.118 +
   3.119 +		if(width > max_glyph_x) {
   3.120 +			max_glyph_x = width;
   3.121 +		}
   3.122 +	}
   3.123 +
   3.124 +	int gx = 0, gy = 0;
   3.125 +	for(int i=0; i<MAX_CHARS; i++) {
   3.126 +		FT_Load_Char(face, i, FT_LOAD_RENDER);
   3.127 +		FT_GlyphSlot g = face->glyph;
   3.128 +
   3.129 +		int gwidth = SIZE_PIXELS(g->metrics.width);
   3.130 +		int gheight = SIZE_PIXELS(g->metrics.height);
   3.131 +
   3.132 +		if(gx > MAX_IMG_WIDTH - gwidth) {
   3.133 +			gx = 0;
   3.134 +			gy += max_glyph_y;
   3.135 +		}
   3.136 +
   3.137 +		BlitFontGlyph(fnt, gx, gy, g, img, tex_xsz, tex_ysz);
   3.138 +		fnt->scale = 1.0;
   3.139 +		fnt->line_adv = (float)SIZE_PIXELS(g->metrics.vertAdvance) / (float)vport_ysz;
   3.140 +		fnt->glyphs[i].tc_pos.x = (float)gx / (float)tex_xsz;
   3.141 +		fnt->glyphs[i].tc_pos.y = (float)gy / (float)tex_ysz;
   3.142 +		fnt->glyphs[i].tc_sz.x = (float)gwidth / (float)tex_xsz;
   3.143 +		fnt->glyphs[i].tc_sz.y = (float)gheight / (float)tex_ysz;
   3.144 +		fnt->glyphs[i].size.x = (float)gwidth / (float)vport_xsz;
   3.145 +		fnt->glyphs[i].size.y = (float)gheight / (float)vport_ysz;
   3.146 +		fnt->glyphs[i].pos.x = (float)SIZE_PIXELS(g->metrics.horiBearingX) / (float)vport_xsz;
   3.147 +		fnt->glyphs[i].pos.y = -(float)SIZE_PIXELS(g->metrics.horiBearingY) / (float)vport_ysz;
   3.148 +		fnt->glyphs[i].advance = (float)SIZE_PIXELS(g->metrics.horiAdvance) / (float)vport_xsz;
   3.149 +
   3.150 +		gx += gwidth;
   3.151 +	}
   3.152 +
   3.153 +	FT_Done_Face(face);
   3.154 +
   3.155 +	glGenTextures(1, &fnt->tex_id);
   3.156 +	glBindTexture(GL_TEXTURE_2D, fnt->tex_id);
   3.157 +	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
   3.158 +	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
   3.159 +	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
   3.160 +	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
   3.161 +	glTexImage2D(GL_TEXTURE_2D, 0, 4, tex_xsz, tex_ysz, 0, PIXFMT, GL_UNSIGNED_BYTE, img);
   3.162 +
   3.163 +#ifdef DUMP_FONT_IMG
   3.164 +	FILE *fp;
   3.165 +	unsigned int *ptr = img;
   3.166 +
   3.167 +	if((fp = fopen("fnt.ppm", "wb"))) {
   3.168 +		fprintf(fp, "P6\n%d %d\n255\n", tex_xsz, tex_ysz);
   3.169 +
   3.170 +		for(int i=0; i<tex_xsz * tex_ysz; i++) {
   3.171 +			fputc((*ptr >> 24) & 0xff, fp);
   3.172 +			fputc((*ptr >> 24) & 0xff, fp);
   3.173 +			fputc((*ptr >> 24) & 0xff, fp);
   3.174 +			ptr++;
   3.175 +		}
   3.176 +		fclose(fp);
   3.177 +	}
   3.178 +#endif
   3.179 +	
   3.180 +	delete [] img;
   3.181 +
   3.182 +	act_fnt = fnt;
   3.183 +
   3.184 +	return 1;
   3.185 +}
   3.186 +
   3.187 +void DeleteFont(unsigned int fid)
   3.188 +{
   3.189 +}
   3.190 +
   3.191 +unsigned int GetFont(const char *fname, int sz)
   3.192 +{
   3.193 +	return 1;
   3.194 +}
   3.195 +
   3.196 +bool BindFont(unsigned int fid)
   3.197 +{
   3.198 +	return true;
   3.199 +}
   3.200 +
   3.201 +void SetTextPos(const Vector2 &pos)
   3.202 +{
   3.203 +	text_pos = pos;
   3.204 +}
   3.205 +
   3.206 +Vector2 GetTextPos()
   3.207 +{
   3.208 +	return text_pos;
   3.209 +}
   3.210 +
   3.211 +void TextLineAdvance(int adv)
   3.212 +{
   3.213 +	text_pos.y += (float)adv * act_fnt->line_adv;
   3.214 +}
   3.215 +
   3.216 +void TextCRet()
   3.217 +{
   3.218 +	text_pos.x = 0.0;
   3.219 +}
   3.220 +
   3.221 +void SetTextSize(float sz)
   3.222 +{
   3.223 +	text_size = sz;
   3.224 +}
   3.225 +
   3.226 +float GetTextSize()
   3.227 +{
   3.228 +	return text_size;
   3.229 +}
   3.230 +
   3.231 +void SetTextColor(const Color &col)
   3.232 +{
   3.233 +	text_color = col;
   3.234 +}
   3.235 +
   3.236 +Color GetTextColor()
   3.237 +{
   3.238 +	return text_color;
   3.239 +}
   3.240 +
   3.241 +static void ImOverlay(const Vector2 &v1, const Vector2 &v2, const Color &col, unsigned int tex)
   3.242 +{
   3.243 +	float l = v1.x * 2.0f - 1.0f;
   3.244 +	float r = v2.x * 2.0f - 1.0f;
   3.245 +	float u = -v1.y * 2.0f + 1.0f;
   3.246 +	float d = -v2.y * 2.0f + 1.0f;
   3.247 +
   3.248 +	glMatrixMode(GL_PROJECTION);
   3.249 +	glPushMatrix();
   3.250 +	glLoadIdentity();
   3.251 +	glMatrixMode(GL_MODELVIEW);
   3.252 +	glPushMatrix();
   3.253 +	glLoadIdentity();
   3.254 +
   3.255 +	glBindTexture(GL_TEXTURE_2D, tex);
   3.256 +
   3.257 +	glDisable(GL_DEPTH_TEST);
   3.258 +	glDisable(GL_LIGHTING);
   3.259 +	glDisable(GL_CULL_FACE);
   3.260 +
   3.261 +	glBegin(GL_QUADS);
   3.262 +	glColor4f(col.r, col.g, col.b, col.a);
   3.263 +	glTexCoord2f(0, 0);
   3.264 +	glVertex2f(l, u);
   3.265 +	glTexCoord2f(1, 0);
   3.266 +	glVertex2f(r, u);
   3.267 +	glTexCoord2f(1, 1);
   3.268 +	glVertex2f(r, d);
   3.269 +	glTexCoord2f(0, 1);
   3.270 +	glVertex2f(l, d);
   3.271 +	glEnd();
   3.272 +
   3.273 +	glEnable(GL_LIGHTING);
   3.274 +	glEnable(GL_DEPTH_TEST);
   3.275 +
   3.276 +	glMatrixMode(GL_PROJECTION);
   3.277 +	glPopMatrix();
   3.278 +	glMatrixMode(GL_MODELVIEW);
   3.279 +	glPopMatrix();
   3.280 +}
   3.281 +
   3.282 +float PrintChar(char c)
   3.283 +{
   3.284 +	// get texture coordinates for the glyph, and construct the texture matrix
   3.285 +	float tx = act_fnt->glyphs[(int)c].tc_pos.x;
   3.286 +	float ty = act_fnt->glyphs[(int)c].tc_pos.y;
   3.287 +	float sx = act_fnt->glyphs[(int)c].tc_sz.x;
   3.288 +	float sy = act_fnt->glyphs[(int)c].tc_sz.y;
   3.289 +
   3.290 +	float mat[] = {
   3.291 +		sx, 0, tx, 0,
   3.292 +		0, sy, ty, 0,
   3.293 +		0, 0, 1, 0,
   3.294 +		0, 0, 0, 1
   3.295 +	};
   3.296 +
   3.297 +	glMatrixMode(GL_TEXTURE);
   3.298 +	glPushMatrix();
   3.299 +	glLoadMatrixf(mat);
   3.300 +
   3.301 +	Vector2 pos = text_pos + act_fnt->glyphs[(int)c].pos * act_fnt->scale;
   3.302 +	ImOverlay(pos, pos + act_fnt->glyphs[(int)c].size * act_fnt->scale, text_color, act_fnt->tex_id);
   3.303 +
   3.304 +	glMatrixMode(GL_TEXTURE);
   3.305 +	glPopMatrix();
   3.306 +
   3.307 +	return act_fnt->glyphs[(int)c].advance * act_fnt->scale;
   3.308 +}
   3.309 +
   3.310 +// this function contains the preamble of all block text drawing functions (i.e. not printchar above)
   3.311 +static void PreDraw()
   3.312 +{
   3.313 +	glMatrixMode(GL_PROJECTION);
   3.314 +	glPushMatrix();
   3.315 +	/*glLoadTransposeMatrixf(OrthoProj(2, 2, 0, 10).m);*/
   3.316 +	glLoadIdentity();
   3.317 +	glMatrixMode(GL_MODELVIEW);
   3.318 +	glPushMatrix();
   3.319 +	glLoadIdentity();
   3.320 +	glMatrixMode(GL_TEXTURE);
   3.321 +	glPushMatrix();
   3.322 +	glLoadIdentity();
   3.323 +
   3.324 +	glEnable(GL_TEXTURE_2D);
   3.325 +	glBindTexture(GL_TEXTURE_2D, act_fnt->tex_id);
   3.326 +
   3.327 +	glBegin(GL_QUADS);
   3.328 +	glColor4f(text_color.r, text_color.g, text_color.b, text_color.a);
   3.329 +}
   3.330 +
   3.331 +static void PostDraw()
   3.332 +{
   3.333 +	glEnd();
   3.334 +
   3.335 +	glDisable(GL_TEXTURE_2D);
   3.336 +
   3.337 +	glMatrixMode(GL_TEXTURE);
   3.338 +	glPopMatrix();
   3.339 +	glMatrixMode(GL_MODELVIEW);
   3.340 +	glPopMatrix();
   3.341 +	glMatrixMode(GL_PROJECTION);
   3.342 +	glPopMatrix();
   3.343 +}
   3.344 +
   3.345 +float PrintString(const char *str, bool standalone)
   3.346 +{
   3.347 +	if(standalone) PreDraw();
   3.348 +	
   3.349 +	float start_x = text_pos.x;
   3.350 +	while(*str) {
   3.351 +		float tx = act_fnt->glyphs[(int)*str].tc_pos.x;
   3.352 +		float ty = act_fnt->glyphs[(int)*str].tc_pos.y;
   3.353 +		float sx = act_fnt->glyphs[(int)*str].tc_sz.x;
   3.354 +		float sy = act_fnt->glyphs[(int)*str].tc_sz.y;
   3.355 +
   3.356 +		Vector2 tc1 = Vector2(tx, ty);
   3.357 +		Vector2 tc2 = Vector2(tx + sx, ty + sy);
   3.358 +
   3.359 +		Vector2 v1 = text_pos + act_fnt->glyphs[(int)*str].pos * act_fnt->scale * text_size;
   3.360 +		Vector2 v2 = v1 + act_fnt->glyphs[(int)*str].size * act_fnt->scale * text_size;
   3.361 +		float l = v1.x * 2.0f - 1.0f;
   3.362 +		float r = v2.x * 2.0f - 1.0f;
   3.363 +		float u = -v1.y * 2.0f + 1.0f;
   3.364 +		float d = -v2.y * 2.0f + 1.0f;
   3.365 +
   3.366 +		glTexCoord2f(tc1.x, tc1.y);
   3.367 +		glVertex2f(l, u);
   3.368 +		glTexCoord2f(tc2.x, tc1.y);
   3.369 +		glVertex2f(r, u);
   3.370 +		glTexCoord2f(tc2.x, tc2.y);
   3.371 +		glVertex2f(r, d);
   3.372 +		glTexCoord2f(tc1.x, tc2.y);
   3.373 +		glVertex2f(l, d);
   3.374 +
   3.375 +		text_pos.x += act_fnt->glyphs[(int)*str++].advance * act_fnt->scale * text_size;
   3.376 +	}
   3.377 +
   3.378 +	if(standalone) PostDraw();
   3.379 +	return text_pos.x - start_x;
   3.380 +}
   3.381 +
   3.382 +void PrintStringLines(const char **str, int lines)
   3.383 +{
   3.384 +	PreDraw();
   3.385 +
   3.386 +	while(lines-- > 0) {
   3.387 +		PrintString(*str++, false);
   3.388 +		TextLineAdvance();
   3.389 +		TextCRet();
   3.390 +	}
   3.391 +
   3.392 +	PostDraw();
   3.393 +}
   3.394 +
   3.395 +static void BlitFontGlyph(Font *fnt, int x, int y, FT_GlyphSlot glyph, unsigned int *img, int xsz, int ysz)
   3.396 +{
   3.397 +	if(glyph->bitmap.pixel_mode != FT_PIXEL_MODE_GRAY) {
   3.398 +		fprintf(stderr, "BlitFontGlyph: unsupported pixel mode: %d\n", glyph->bitmap.pixel_mode);
   3.399 +		return;
   3.400 +	}
   3.401 +
   3.402 +	unsigned int *dest = img + y * xsz + x;
   3.403 +	unsigned char *src = glyph->bitmap.buffer;
   3.404 +
   3.405 +	for(int j=0; j<glyph->bitmap.rows; j++) {
   3.406 +		for(int i=0; i<glyph->bitmap.width; i++) {
   3.407 +			dest[i] = 0x00ffffff | ((unsigned int)src[i] << 24);
   3.408 +		}
   3.409 +		dest += xsz;
   3.410 +		src += glyph->bitmap.pitch;
   3.411 +	}
   3.412 +}
   3.413 +
   3.414 +static void CleanUp()
   3.415 +{
   3.416 +	FT_Done_FreeType(ft);
   3.417 +}
   3.418 +
   3.419 +float GetMaxDescent()
   3.420 +{
   3.421 +	Font *fnt = act_fnt;
   3.422 +
   3.423 +	float max_descent = 0.0f;
   3.424 +	
   3.425 +	for(int i=0; i<MAX_CHARS; i++) {
   3.426 +		float des = fnt->glyphs[i].pos.y + fnt->glyphs[i].size.y;
   3.427 +		if(isprint(i) && des > max_descent) {
   3.428 +			max_descent = des;
   3.429 +		}
   3.430 +	}
   3.431 +
   3.432 +	return max_descent;
   3.433 +}
   3.434 +
   3.435 +float GetLineAdvance()
   3.436 +{
   3.437 +	return act_fnt->line_adv;
   3.438 +}
   3.439 +
   3.440 +float GetTextWidth(const char *str)
   3.441 +{
   3.442 +	float width = 0;
   3.443 +	while(*str) {
   3.444 +		width += act_fnt->glyphs[(int)*str++].advance * act_fnt->scale * text_size;
   3.445 +	}
   3.446 +	return width;
   3.447 +}

     4.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     4.2 +++ b/src/utktext.h	Tue Oct 26 08:49:09 2010 +0300
     4.3 @@ -0,0 +1,45 @@
     4.4 +#ifndef TEXT_H
     4.5 +#define TEXT_H
     4.6 +
     4.7 +#if defined(WIN32) || defined(__WIN32__)
     4.8 +#include <windows.h>
     4.9 +#endif
    4.10 +
    4.11 +#include <vmath.h>
    4.12 +
    4.13 +class Color {
    4.14 +public:
    4.15 +	float r, g, b, a;
    4.16 +
    4.17 +	Color() {r = g = b = a = 1.0f;}
    4.18 +	Color(float r, float g, float b, float a = 1.0f) {this->r = r; this->g = g; this->b = b; this->a = a;}
    4.19 +};
    4.20 +
    4.21 +
    4.22 +unsigned int CreateFont(const char *fname, int font_size);
    4.23 +void DeleteFont(unsigned int fid);
    4.24 +unsigned int GetFont(const char *fname, int sz);
    4.25 +bool BindFont(unsigned int fid);
    4.26 +
    4.27 +
    4.28 +void SetTextPos(const Vector2 &pos);
    4.29 +Vector2 GetTextPos();
    4.30 +
    4.31 +void TextLineAdvance(int adv = 1);
    4.32 +void TextCRet();
    4.33 +
    4.34 +void SetTextSize(float sz);
    4.35 +float GetTextSize();
    4.36 +
    4.37 +void SetTextColor(const Color &col);
    4.38 +Color GetTextColor();
    4.39 +
    4.40 +float PrintChar(char c);
    4.41 +float PrintString(const char *text, bool standalone = true);
    4.42 +void PrintStringLines(const char **str, int lines);
    4.43 +
    4.44 +float GetMaxDescent();
    4.45 +float GetLineAdvance();
    4.46 +float GetTextWidth(const char *str);
    4.47 +
    4.48 +#endif	// TEXT_H