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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#ifdef __MSW__
# include <windows.h>
#endif
#include "../include/string.h"
#include <GL/gl.h>
#include <GL/glu.h>
#include "gw.h"
#include "v3dtex.h"
#include "cpvalues.h"
#include "cpins.h"
#include "cp.h"
void CPInsSetName(CPIns *ins, const char *name);
void CPInsSetPosition(CPIns *ins, float x, float y);
void CPInsSetSize(CPIns *ins, float width, float height);
void CPInsSetTextureBG(CPIns *ins, const char *path);
void CPInsSetTextureFG(CPIns *ins, const char *path);
void CPInsSetResolution(
CPIns *ins,
int res_width, int res_height /* In pixels. */
);
void CPInsSetUpdateInt(CPIns *ins, time_t update_int);
void CPInsSetFunction(
CPIns *ins, const char *func_name,
void *func, void *data
);
void CPInsResetTimmers(CPIns *ins, time_t t);
void CPInsChangeValues(CPIns *ins, ControlPanelValues *v);
void CPInsDraw(CPIns *ins);
void CPInsDrawFullScreen(CPIns *ins, const CPRectangle *rect);
void CPInsManage(CPIns *ins, ControlPanelValues *v);
void CPInsRealizeTexture(CPIns *ins);
CPIns *CPInsNew(size_t s, void *cp, int type, const char *name);
void CPInsDelete(CPIns *ins);
#ifndef PI
# define PI 3.14159265
#endif
#define ATOI(s) (((s) != NULL) ? atoi(s) : 0)
#define ATOL(s) (((s) != NULL) ? atol(s) : 0)
#define ATOF(s) (((s) != NULL) ? (float)atof(s) : 0.0f)
#define STRDUP(s) (((s) != NULL) ? strdup(s) : NULL)
#define MAX(a,b) (((a) > (b)) ? (a) : (b))
#define MIN(a,b) (((a) < (b)) ? (a) : (b))
#define CLIP(a,l,h) (MIN(MAX((a),(l)),(h)))
#define RADTODEG(r) ((r) * 180.0 / PI)
#define DEGTORAD(d) ((d) * PI / 180.0)
#define NORMAL3F(x,y,z) (glNormal3f( \
(GLfloat)(x), \
(GLfloat)(z), \
(GLfloat)-(y) \
))
#define TEXCOORD2F(x,y) (glTexCoord2f( \
(GLfloat)(x), \
(GLfloat)(y) \
))
#define VERTEX3F(x,y,z) (glVertex3f( \
(GLfloat)((x) / 100.0), \
(GLfloat)((z) / 100.0), \
(GLfloat)((y) / -100.0) \
))
#define ROTATEH(r) (glRotatef((GLfloat)-RADTODEG(r), \
0.0f, 1.0f, 0.0f))
#define ROTATEP(r) (glRotatef((GLfloat)-RADTODEG(r), \
1.0f, 0.0f, 0.0f))
#define ROTATEB(r) (glRotatef((GLfloat)-RADTODEG(r), \
0.0f, 0.0f, 1.0f))
#define TRANSLATE(x,y,z) (glTranslatef( \
(GLfloat)((x) / 100.0), \
(GLfloat)((z) / 100.0), \
(GLfloat)((y) / -100.0) \
))
/*
* Sets name of instrument.
*/
void CPInsSetName(CPIns *ins, const char *name)
{
if(ins == NULL)
return;
free(ins->name);
ins->name = STRDUP(name);
}
/*
* Set position coefficient of instrument relative to the control
* panel's upper left corner.
*/
void CPInsSetPosition(CPIns *ins, float x, float y)
{
if(ins == NULL)
return;
ins->x = x;
ins->y = y;
}
/*
* Sets the size coefficient of the instrument.
*/
void CPInsSetSize(CPIns *ins, float width, float height)
{
if(ins == NULL)
return;
ins->width = width;
ins->height = height;
}
/*
* Set instrument background texture.
*/
void CPInsSetTextureBG(CPIns *ins, const char *path)
{
if(ins == NULL)
return;
V3DTextureDestroy(ins->tex_bg);
ins->tex_bg = NULL;
if((path != NULL) ? (*path == '\0') : GL_TRUE)
return;
ins->tex_bg = V3DTextureLoadFromFile2DPreempt(
path, "instrument_bg_tex",
V3D_TEX_FORMAT_RGBA
);
}
/*
* Set instrument foreground texture.
*/
void CPInsSetTextureFG(CPIns *ins, const char *path)
{
if(ins == NULL)
return;
V3DTextureDestroy(ins->tex_fg);
ins->tex_fg = NULL;
if((path != NULL) ? (*path == '\0') : GL_TRUE)
return;
ins->tex_fg = V3DTextureLoadFromFile2DPreempt(
path, "instrument_fg_tex",
V3D_TEX_FORMAT_RGBA
);
}
/*
* Sets the texture resolution of the instrument in pixels.
*/
void CPInsSetResolution(
CPIns *ins,
int res_width, int res_height /* In pixels. */
)
{
if(ins == NULL)
return;
/* Update resolution only if there is change. */
if((ins->res_width != res_width) ||
(ins->res_height != res_height)
)
{
ins->res_width = res_width;
ins->res_height = res_height;
/* Destroy texture. */
V3DTextureDestroy(ins->tex);
ins->tex = NULL;
/* Recreate texture if resolution is positive. */
if((res_width > 0) && (res_height > 0))
{
u_int8_t *data = (u_int8_t *)malloc(
res_width * res_height * 4 * sizeof(u_int8_t)
);
ins->tex = V3DTextureLoadFromData2D(
(const void *)data,
NULL,
res_width, res_height,
32,
V3D_TEX_FORMAT_RGBA,
NULL, NULL
);
free(data);
V3DTexturePriority(ins->tex, 1.0);
}
}
}
/*
* Sets the instrument update interval in milliseconds.
*/
void CPInsSetUpdateInt(CPIns *ins, time_t update_int)
{
if(ins == NULL)
return;
ins->update_int = update_int;
}
/*
* Sets the function pointer func to the function specified by
* func_name.
*/
void CPInsSetFunction(
CPIns *ins, const char *func_name,
void *func, void *data
)
{
if((ins == NULL) || (func_name == NULL))
return;
if(!strcasecmp(func_name, "values_changed"))
{
ins->values_changed_func_data = data;
ins->values_changed_func = func;
}
else if(!strcasecmp(func_name, "manage"))
{
ins->manage_func_data = data;
ins->manage_func = func;
}
else if(!strcasecmp(func_name, "reset_timmers"))
{
ins->reset_timmers_func_data = data;
ins->reset_timmers_func = func;
}
else if(!strcasecmp(func_name, "delete"))
{
ins->delete_func_data = data;
ins->delete_func = func;
}
else
{
fprintf(
stderr,
"CPInsSetFunction(): Warning:\
Instrument \"%s\": Unsupported function \"%s\".",
CPINS_NAME(ins), func_name
);
}
}
/*
* Reset timmer of instrument.
*/
void CPInsResetTimmers(CPIns *ins, time_t t)
{
if(ins == NULL)
return;
ins->update_next = t;
if(ins->reset_timmers_func != NULL)
ins->reset_timmers_func(ins, t, ins->reset_timmers_func_data);
}
/*
* Change values of instrument.
*/
void CPInsChangeValues(CPIns *ins, ControlPanelValues *v)
{
if((ins == NULL) || (v == NULL))
return;
if(ins->values_changed_func != NULL)
{
ControlPanel *cp = CONTROL_PANEL(ins->cp);
gw_display_struct *display = CONTROL_PANEL_DISPLAY(cp);
int width = ins->res_width,
height = ins->res_height;
if((display == NULL) || (width <= 1) || (height < 1))
return;
/* Set up GL states for 2d drawing before calling the
* "values_changed" function. This is for convience so that
* the GL state is all ready for drawing of the texture.
*/
glViewport(0, 0, width, height);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glPixelStorei(GL_PACK_ALIGNMENT, 1);
StateGLDisable(&display->state_gl, GL_LIGHTING);
StateGLDisable(&display->state_gl, GL_BLEND);
StateGLDisable(&display->state_gl, GL_FOG);
StateGLDisable(&display->state_gl, GL_DEPTH_TEST);
StateGLDepthFunc(&display->state_gl, GL_ALWAYS);
StateGLEnable(&display->state_gl, GL_ALPHA_TEST);
StateGLAlphaFunc(&display->state_gl, GL_GREATER, 0.5);
StateGLShadeModel(&display->state_gl, GL_FLAT);
StateGLEnable(&display->state_gl, GL_TEXTURE_2D);
StateGLTexEnvI(
&display->state_gl,
GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE
);
StateGLDisable(&display->state_gl, GL_CULL_FACE);
StateGLDisable(&display->state_gl, GL_COLOR_MATERIAL);
GWOrtho2DCoord(
display,
/* Left and right coordinate values. */
0.0f, (float)MAX(width - 1, 1),
/* Top and bottom coordinate values. */
(float)MAX(height - 1, 1), 0.0f
);
ins->values_changed_func(
ins,
v,
ins->values_changed_func_data
);
}
}
/*
* Redraws the instrument in 3d.
*/
void CPInsDraw(CPIns *ins)
{
GLfloat x, y, width, height;
ControlPanel *cp;
gw_display_struct *display;
v3d_texture_ref_struct *tex;
if(ins == NULL)
return;
cp = CONTROL_PANEL(ins->cp);
display = CONTROL_PANEL_DISPLAY(cp);
if(display == NULL)
return;
if(GL_TRUE)
{
/* Calculate position and size (in centimeters) relative to
* the control panel's upper left corner.
*/
x = ins->x * cp->width;
y = ins->y * cp->height;
width = ins->width * cp->width;
height = ins->height * cp->height;
/* Begin drawing instrument. */
glPushMatrix();
TRANSLATE(x, -y, 0.0);
tex = ins->tex;
if(tex != NULL)
{
glColor3f(1.0f, 1.0f, 1.0f);
V3DTextureSelect(tex);
}
else
{
glColor3f(0.0f, 0.0f, 0.0f);
}
glBegin(GL_QUADS);
{
NORMAL3F(0.0, 0.0, 1.0);
TEXCOORD2F(0, 0);
VERTEX3F(0.0, 0.0, 0.0);
TEXCOORD2F(0, 1);
VERTEX3F(0.0, -height, 0.0);
TEXCOORD2F(1, 1);
VERTEX3F(width, -height, 0.0);
TEXCOORD2F(1, 0);
VERTEX3F(width, 0.0, 0.0);
}
glEnd();
glPopMatrix();
}
}
/*
* Redraws the instrument in 2d with respect to the given
* rectangle indicating the size and position of the control panel
* in window coordinates..
*/
void CPInsDrawFullScreen(CPIns *ins, const CPRectangle *rect)
{
GLfloat x, y, width, height;
ControlPanel *cp;
gw_display_struct *display;
v3d_texture_ref_struct *tex;
if((ins == NULL) || (rect == NULL))
return;
cp = CONTROL_PANEL(ins->cp);
display = CONTROL_PANEL_DISPLAY(cp);
if(display == NULL)
return;
if(GL_TRUE)
{
/* Calculate position and size (in window coordinates)
* relative to the control panel's upper left corner.
*/
x = rect->x + (ins->x * rect->width);
y = rect->y + (ins->y * rect->height);
width = ins->width * rect->width;
height = ins->height * rect->height;
tex = ins->tex;
if(tex != NULL)
{
glColor3f(1.0f, 1.0f, 1.0f);
V3DTextureSelect(tex);
}
else
{
glColor3f(0.0f, 0.0f, 0.0f);
}
glBegin(GL_QUADS);
{
glTexCoord2f(0, 0);
glVertex2f(x, y);
glTexCoord2f(0, 1);
glVertex2f(x, y + height);
glTexCoord2f(1, 1);
glVertex2f(x + width, y + height);
glTexCoord2f(1, 0);
glVertex2f(x + width, y);
}
glEnd();
}
}
/*
* Manages the instrument, this should be called once per loop.
*
* Only the members current_time and time_compensation in v are
* used.
*/
void CPInsManage(CPIns *ins, ControlPanelValues *v)
{
if((ins == NULL) || (v == NULL))
return;
if(ins->manage_func != NULL)
ins->manage_func(ins, v, ins->manage_func_data);
}
/*
* Gets the texture from the drawn up back buffer of the GL frame
* buffer.
*/
void CPInsRealizeTexture(CPIns *ins)
{
int x, y, xoffset, yoffset;
int res_width, res_height;
ControlPanel *cp;
gw_display_struct *display;
v3d_texture_ref_struct *tex;
if(ins == NULL)
return;
cp = CONTROL_PANEL(ins->cp);
display = CONTROL_PANEL_DISPLAY(cp);
if(display == NULL)
return;
res_width = ins->res_width;
res_height = ins->res_height;
/* Get instrument's texture, recreate it as needed. */
tex = ins->tex;
if(tex == NULL)
{
CPInsSetResolution(ins, 0, 0);
CPInsSetResolution(ins, res_width, res_height);
tex = ins->tex;
}
if(tex == NULL)
return;
/* Texture size must match resolution size. */
if((res_width != tex->width) ||
(res_height != tex->height)
)
return;
/* Select instrument texture. */
StateGLEnable(&display->state_gl, GL_TEXTURE_2D);
V3DTextureSelect(tex);
/* Read back drawn frame buffer's alpha channel. */
if(display->has_double_buffer)
glReadBuffer(GL_BACK);
else
glReadBuffer(GL_FRONT);
/* Texture position. */
xoffset = 0;
yoffset = 0;
/* Frame buffer position. */
x = 0;
y = 0;
/* Copy frame buffer contents to texture. */
glCopyTexSubImage2D(
GL_TEXTURE_2D,
0, /* level-of-detail. */
xoffset, yoffset,
x, y,
res_width, res_height
);
}
/*
* Creates a new instrument.
*
* The size s must be sizeof(CPIns) or greater.
*/
CPIns *CPInsNew(size_t s, void *cp, int type, const char *name)
{
CPColor *c;
CPIns *ins;
if(s < sizeof(CPIns))
{
fprintf(
stderr,
"CPInsNew(): Error: Instrument \"%s\" size %i is less than required size %i.\n",
name, s, sizeof(CPIns)
);
return(NULL);
}
ins = CPINS(calloc(1, s));
if(ins == NULL)
return(NULL);
ins->type = type;
ins->cp = cp;
ins->name = STRDUP(name);
ins->res_width = 64;
ins->res_height = 64;
ins->tex = NULL;
ins->tex_bg = NULL;
ins->tex_fg = NULL;
c = &ins->color_bg[CP_COLOR_STATE_NORMAL];
c->r = 0.3f;
c->g = 0.3f;
c->b = 0.3f;
c = &ins->color_bg[CP_COLOR_STATE_DIM];
c->r = 0.15f;
c->g = 0.15f;
c->b = 0.15f;
c = &ins->color_bg[CP_COLOR_STATE_DARK];
c->r = 0.0f;
c->g = 0.0f;
c->b = 0.0f;
c = &ins->color_bg[CP_COLOR_STATE_LIGHTED];
c->r = 0.3f;
c->g = 0.05f;
c->b = 0.0f;
c = &ins->color_fg[CP_COLOR_STATE_NORMAL];
c->r = 0.8f;
c->g = 0.8f;
c->b = 0.8f;
c = &ins->color_fg[CP_COLOR_STATE_DIM];
c->r = 0.4f;
c->g = 0.4f;
c->b = 0.4f;
c = &ins->color_fg[CP_COLOR_STATE_DARK];
c->r = 0.1f;
c->g = 0.1f;
c->b = 0.1f;
c = &ins->color_fg[CP_COLOR_STATE_LIGHTED];
c->r = 0.8f;
c->g = 0.3f;
c->b = 0.0f;
c = &ins->color_text[CP_COLOR_STATE_NORMAL];
c->r = 0.8f;
c->g = 0.8f;
c->b = 0.8f;
c = &ins->color_text[CP_COLOR_STATE_DIM];
c->r = 0.4f;
c->g = 0.4f;
c->b = 0.4f;
c = &ins->color_text[CP_COLOR_STATE_DARK];
c->r = 0.1f;
c->g = 0.1f;
c->b = 0.1f;
c = &ins->color_text[CP_COLOR_STATE_LIGHTED];
c->r = 0.8f;
c->g = 0.3f;
c->b = 0.0f;
return(ins);
}
/*
* Deletes the instrument.
*/
void CPInsDelete(CPIns *ins)
{
if(ins == NULL)
return;
/* Call delete function to delete the instrument's
* substructures and other resources not accessable from
* this module.
*/
if(ins->delete_func != NULL)
ins->delete_func(ins, ins->delete_func_data);
else if(!CPINS_IS_INS(ins))
fprintf(
stderr,
"CPInsDelete(): Warning: Instrument \"%s\": \"delete\" function not set.\n",
CPINS_NAME(ins)
);
/* Begin deleting instrument. */
V3DTextureDestroy(ins->tex_bg);
V3DTextureDestroy(ins->tex_fg);
V3DTextureDestroy(ins->tex);
free(ins->name);
free(ins);
}
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