Parallax Usplash

[red_team316]

Hey all, I finally completed my parallax usplash and thought I would share:

You can download the full source HERE

parallax-theme.c posted for reference

Code: Select all

/* usplash
 *
 * parallax-theme.c
 * Copyright © 2008 red_team316
 * Original Code found throughout Copyright © 2006 Dennis Kaarsemaker
 *
 * Notes: Includes pallete index bugfix see URL below.
 * https://bugs.launchpad.net/ubuntu/+source/usplash/+bug/66760
 *
 * 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 */

#include <usplash-theme.h>
/* Needed for the custom drawing functions */
#include <usplash_backend.h>

extern struct usplash_pixmap pixmap_usplash_640x480;
extern struct usplash_pixmap pixmap_usplash_800x600;
extern struct usplash_pixmap pixmap_usplash_1024x768;
extern struct usplash_pixmap pixmap_usplash_1280x1024;

/* Parallax Pixmaps */
extern struct usplash_pixmap pixmap_logo;
extern struct usplash_pixmap pixmap_strip1_640x480;
extern struct usplash_pixmap pixmap_strip2_640x480;
extern struct usplash_pixmap pixmap_strip1_800x600;
extern struct usplash_pixmap pixmap_strip2_800x600;
extern struct usplash_pixmap pixmap_strip1_1024x768;
extern struct usplash_pixmap pixmap_strip2_1024x768;
extern struct usplash_pixmap pixmap_strip1_1280x1024;
extern struct usplash_pixmap pixmap_strip2_1280x1024;

extern struct usplash_pixmap pixmap_throbber_back;
extern struct usplash_pixmap pixmap_throbber_fore;
extern struct usplash_font font_helvB10;

void t_init(struct usplash_theme* theme);
void t_clear_progressbar(struct usplash_theme* theme);
void t_draw_progressbar(struct usplash_theme* theme, int percentage);
void t_animate_step(struct usplash_theme* theme, int pulsating);

struct usplash_theme usplash_theme_640x480;
struct usplash_theme usplash_theme_800x600;
struct usplash_theme usplash_theme_1024x768;
struct usplash_theme usplash_theme_1280x1024;

/* Theme definition */
struct usplash_theme usplash_theme = {
   .version = THEME_VERSION,
   .next = &usplash_theme_800x600,
   .ratio = USPLASH_4_3,

   /* Background and font */
   .pixmap = &pixmap_usplash_640x480,
   .font   = &font_helvB10,

   /* Palette indexes */
   .background             = 0,
   .progressbar_background = 0,
   .progressbar_foreground = 30,
   .text_background        = 0,
   .text_foreground        = 125,
   .text_success           = 125,
   .text_failure           = 215,

   /* Progress bar position and size in pixels */
   .progressbar_x      = 212, /* 640/2-216/2 */
   .progressbar_y      = 290, /* (strip2 height)+(logo height)+3 */
   .progressbar_width  = 216,
   .progressbar_height = 8,

   /* Text box position and size in pixels */                          /*                          */
   .text_x      = 100, /* 100+440+100=640 */                           /*   x,y-----------------   */
   .text_y      = 310, /* Fit between progressbar and strip1 */        /*   |                  |   */
   .text_width  = 440,                                                 /*   -----------------w,h   */
   .text_height = 105, /* 7 lines */                                   /*                          */

   /* Text details */
   .line_height  = 15,   /* Height of line in pixels */
   .line_length  = 32,   /* Length of line in characters */
   .status_width = 64,   /* Number of RHS pixels for status */

    /* Functions */
    .init = t_init,
    .clear_progressbar = t_clear_progressbar,
    .draw_progressbar = t_draw_progressbar,
    .animate_step = t_animate_step,
};

struct usplash_theme usplash_theme_800x600 = {
   .version = THEME_VERSION,
   .next = &usplash_theme_1024x768,
   .ratio = USPLASH_4_3,

   /* Background and font */
   .pixmap = &pixmap_usplash_800x600,
   .font   = &font_helvB10,

   /* Palette indexes */
   .background             = 0,
   .progressbar_background = 0,
   .progressbar_foreground = 30,
   .text_background        = 0,
   .text_foreground        = 125,
   .text_success           = 125,
   .text_failure           = 215,

   /* Progress bar position and size in pixels */
   .progressbar_x      = 292, /* 800/2 - 216/2 */
   .progressbar_y      = 335, /* (strip2 height)+(logo height)+5 */
   .progressbar_width  = 216,
   .progressbar_height = 8,

   /* Text box position and size in pixels */
   .text_x      = 100, /* 100+600+100=800 */
   .text_y      = 345, /* Fit between progressbar and strip1 */
   .text_width  = 600,
   .text_height = 165, /* 11 lines */

   /* Text details */
   .line_height  = 15,
   .line_length  = 32,
   .status_width = 64,

    /* Functions */
    .init = t_init,
    .clear_progressbar = t_clear_progressbar,
    .draw_progressbar = t_draw_progressbar,
    .animate_step = t_animate_step,
};

struct usplash_theme usplash_theme_1024x768 = {
   .version = THEME_VERSION,
   .next = &usplash_theme_1280x1024,
   .ratio = USPLASH_4_3,

   /* Background and font */
   .pixmap = &pixmap_usplash_1024x768,
   .font   = &font_helvB10,

   /* Palette indexes */
   .background             = 0,
   .progressbar_background = 0,
   .progressbar_foreground = 30,
   .text_background        = 0,
   .text_foreground        = 125,
   .text_success           = 125,
   .text_failure           = 215,

   /* Progress bar position and size in pixels */
   .progressbar_x      = 404, /* 1024/2 - 216/2 */
   .progressbar_y      = 390, /* (strip2 height)+(logo height)+3 */
   .progressbar_width  = 216,
   .progressbar_height = 8,

   /* Text box position and size in pixels */
   .text_x      = 200, /* 200+624+200=1024 */
   .text_y      = 400, /* Fit between progressbar and strip1 */
   .text_width  = 624,
   .text_height = 270, /* 18 lines */

   /* Text details */
   .line_height  = 15,
   .line_length  = 32,
   .status_width = 64,

    /* Functions */
    .init = t_init,
    .clear_progressbar = t_clear_progressbar,
    .draw_progressbar = t_draw_progressbar,
    .animate_step = t_animate_step,
};

struct usplash_theme usplash_theme_1280x1024 = {
   .version = THEME_VERSION,
   .next = NULL,
   .ratio = USPLASH_4_3,

   /* Background and font */
   .pixmap = &pixmap_usplash_1280x1024,
   .font   = &font_helvB10,

   /* Palette indexes */
   .background             = 0,
   .progressbar_background = 0,
   .progressbar_foreground = 30,
   .text_background        = 0,
   .text_foreground        = 125,
   .text_success           = 125,
   .text_failure           = 215,

   /* Progress bar position and size in pixels */
   .progressbar_x      = 532, /* 1280/2 - 216/2 */
   .progressbar_y      = 460, /* (strip2 height)+(logo height)+6 */
   .progressbar_width  = 216,
   .progressbar_height = 8,

   /* Text box position and size in pixels */
   .text_x      = 200, /* 200+880+200=1280 */
   .text_y      = 475, /* Fit between progressbar and strip1 */
   .text_width  = 880,
   .text_height = 420, /* 28 lines */

   /* Text details */
   .line_height  = 15,
   .line_length  = 32,
   .status_width = 64,

    /* Functions */
    .init = t_init,
    .clear_progressbar = t_clear_progressbar,
    .draw_progressbar = t_draw_progressbar,
    .animate_step = t_animate_step,
};

void t_init(struct usplash_theme *theme) {
    int x, y;
    usplash_getdimensions(&x, &y);
    theme->progressbar_x = (x - theme->pixmap->width)/2 + theme->progressbar_x;
    theme->progressbar_y = (y - theme->pixmap->height)/2 + theme->progressbar_y;
}

void t_clear_progressbar(struct usplash_theme *theme) {
    t_draw_progressbar(theme, 0);
}

void t_draw_progressbar(struct usplash_theme *theme, int percentage) {
    int w = (pixmap_throbber_back.width * percentage / 100);
    usplash_put(theme->progressbar_x, theme->progressbar_y, &pixmap_throbber_back);

    if(percentage == 0)
        return;
    if(percentage < 0)
        usplash_put_part(theme->progressbar_x - w, theme->progressbar_y, pixmap_throbber_back.width + w,
                         pixmap_throbber_back.height, &pixmap_throbber_fore, -w, 0);
    else
        usplash_put_part(theme->progressbar_x, theme->progressbar_y, w, pixmap_throbber_back.height,
                         &pixmap_throbber_fore, 0, 0);
}

void t_animate_step(struct usplash_theme* theme, int pulsating) {

    static int pulsate_step = 0;
    static int pulse_width = 28;
    static int step_width = 2;
    static int num_steps = (216 - 28)/2;
    int x1;

    if (pulsating) {
        t_draw_progressbar(theme, 0);

        if(pulsate_step < num_steps/2+1)
            x1 = 2 * step_width * pulsate_step;
        else
            x1 = 216 - pulse_width - 2 * step_width * (pulsate_step - num_steps/2+1);

        usplash_put_part(theme->progressbar_x + x1, theme->progressbar_y, pulse_width,
                         pixmap_throbber_fore.height, &pixmap_throbber_fore, x1, 0);

        pulsate_step = (pulsate_step + 1) % num_steps;
    }

    /* Parallax Code */         /* Variable Descriptions*/
    static short firstrun = 1;  /* firstrun = ensure this block of code is only run once */
    static short ani1 = 0;      /* ani1 = pixel offset for scrolling strip1 */
    static short ani2 = 0;      /* ani2 = pixel offset for scrolling strip2 */

    static short resX = 640;    /* resX  = holds the x value of the resolution  */
    static short resY = 480;    /* resY  = holds the y value of the resolution  */
    static short px1 = 0;       /* px1   = upper left coord of strip1 */
    static short px2 = 0;       /* px2   = upper left coord of strip2 */
    static short py1 = 420;     /* py1   = upper left coord of strip1 */
    static short py2 = 0;       /* py2   = upper left coord of strip2 */
    static short pw1 = 640;     /* pw1   = half the width of strip image, for tessellation effect */
    static short pw2 = 640;     /* pw2   = half the width of strip image, for tessellation effect */
    static short ph1 = 60;      /* ph1   = we want to draw the full height of strip */
    static short ph2 = 168;     /* ph2   = we want to draw the full height of strip */
    static short logoX = 92;    /* logoX = centered (ResWidth/2 - logoWidth/2) */
    static short logoY = 170;   /* logoY = strip2 height + 1 */

    if(firstrun)
    {
        firstrun = 0;
        int x, y;
        usplash_getdimensions(&x, &y);
        if(x == 800 && y == 600)
        {
            resX = 800; resY = 600; logoX = 172; logoY = 210;
            px1 = 0; py1 = 525; pw1 = 800; ph1 = 75;
            px2 = 0; py2 = 0;   pw2 = 800; ph2 = 209;
        }
        else if(x == 1024 && y == 768)
        {
            resX = 1024; resY = 768; logoX = 284; logoY = 269;
            px1 = 0; py1 = 672; pw1 = 1024; ph1 = 96;
            px2 = 0; py2 = 0;   pw2 = 1024; ph2 = 268;
        }
        else if(x == 1280 && y == 1024)
        {
            resX = 1280;  resY = 1024; logoX = 412; logoY = 336;
            px1 = 0; py1 = 904; pw1 = 1280; ph1 = 120;
            px2 = 0; py2 = 0;   pw2 = 1280; ph2 = 335;
        }
    }

    /* Move this strip fast */
    if(ani1 < pw1) ani1 += 5;
    else           ani1  = 0;

    /* Move this strip slow */
    if(ani2 < pw2) ani2 += 1;
    else           ani2  = 0;

    /* Draw the scrolling strips */
    if(resX == 640 && resY == 480)
    {
        usplash_put_part(px1, py1, pw1, ph1, &pixmap_strip1_640x480, ani1, 0); /* GRASS */
        usplash_put_part(px2, py2, pw2, ph2, &pixmap_strip2_640x480, ani2, 0); /* SKY */
    }
    else if(resX == 800 && resY == 600)
    {
        usplash_put_part(px1, py1, pw1, ph1, &pixmap_strip1_800x600, ani1, 0);
        usplash_put_part(px2, py2, pw2, ph2, &pixmap_strip2_800x600, ani2, 0);
    }
    else if(resX == 1024 && resY == 768)
    {
        usplash_put_part(px1, py1, pw1, ph1, &pixmap_strip1_1024x768, ani1, 0);
        usplash_put_part(px2, py2, pw2, ph2, &pixmap_strip2_1024x768, ani2, 0);
    }
    else if(resX == 1280 && resY == 1024)
    {
        usplash_put_part(px1, py1, pw1, ph1, &pixmap_strip1_1280x1024, ani1, 0);
        usplash_put_part(px2, py2, pw2, ph2, &pixmap_strip2_1280x1024, ani2, 0);
    }
    /* Draw the logo */
    usplash_put(logoX, logoY, &pixmap_logo);
}


parallax-theme-function.c posted for reference

Code: Select all

/* usplash
 *
 * parallax-theme.c
 * Copyright © 2008 red_team316
 * Original Code found throughout Copyright © 2006 Dennis Kaarsemaker
 *
 * Notes: Includes pallete index bugfix see URL below.
 * https://bugs.launchpad.net/ubuntu/+source/usplash/+bug/66760
 *
 * 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 */

#include <usplash-theme.h>
/* Needed for the custom drawing functions */
#include <usplash_backend.h>

extern struct usplash_pixmap pixmap_usplash_640x480;
extern struct usplash_pixmap pixmap_usplash_800x600;
extern struct usplash_pixmap pixmap_usplash_1024x768;
extern struct usplash_pixmap pixmap_usplash_1280x1024;

/* Parallax Pixmaps */
extern struct usplash_pixmap pixmap_logo;
extern struct usplash_pixmap pixmap_strip1_640x480;
extern struct usplash_pixmap pixmap_strip2_640x480;
extern struct usplash_pixmap pixmap_strip1_800x600;
extern struct usplash_pixmap pixmap_strip2_800x600;
extern struct usplash_pixmap pixmap_strip1_1024x768;
extern struct usplash_pixmap pixmap_strip2_1024x768;
extern struct usplash_pixmap pixmap_strip1_1280x1024;
extern struct usplash_pixmap pixmap_strip2_1280x1024;

extern struct usplash_pixmap pixmap_throbber_back;
extern struct usplash_pixmap pixmap_throbber_fore;
extern struct usplash_font font_helvB10;

void t_init(struct usplash_theme* theme);
void t_clear_progressbar(struct usplash_theme* theme);
void t_draw_progressbar(struct usplash_theme* theme, int percentage);
void t_animate_step(struct usplash_theme* theme, int pulsating);
void t_parallax(short px1, short px2, short py1, short py2, short pw1, short pw2, short ph1, short ph2, short logoX, short logoY, short Res);

struct usplash_theme usplash_theme_640x480;
struct usplash_theme usplash_theme_800x600;
struct usplash_theme usplash_theme_1024x768;
struct usplash_theme usplash_theme_1280x1024;

/* Theme definition */
struct usplash_theme usplash_theme = {
   .version = THEME_VERSION,
   .next = &usplash_theme_800x600,
   .ratio = USPLASH_4_3,

   /* Background and font */
   .pixmap = &pixmap_usplash_640x480,
   .font   = &font_helvB10,

   /* Palette indexes */
   .background             = 0,
   .progressbar_background = 0,
   .progressbar_foreground = 30,
   .text_background        = 0,
   .text_foreground        = 125,
   .text_success           = 125,
   .text_failure           = 215,

   /* Progress bar position and size in pixels */
   .progressbar_x      = 212, /* 640/2-216/2 */
   .progressbar_y      = 290, /* (strip2 height)+(logo height)+3 */
   .progressbar_width  = 216,
   .progressbar_height = 8,

   /* Text box position and size in pixels */                          /*                          */
   .text_x      = 100, /* 100+440+100=640 */                           /*   x,y-----------------   */
   .text_y      = 310, /* Fit between progressbar and strip1 */        /*   |                  |   */
   .text_width  = 440,                                                 /*   -----------------w,h   */
   .text_height = 105, /* 7 lines */                                   /*                          */

   /* Text details */
   .line_height  = 15,   /* Height of line in pixels */
   .line_length  = 32,   /* Length of line in characters */
   .status_width = 64,   /* Number of RHS pixels for status */

    /* Functions */
    .init = t_init,
    .clear_progressbar = t_clear_progressbar,
    .draw_progressbar = t_draw_progressbar,
    .animate_step = t_animate_step,
};

struct usplash_theme usplash_theme_800x600 = {
   .version = THEME_VERSION,
   .next = &usplash_theme_1024x768,
   .ratio = USPLASH_4_3,

   /* Background and font */
   .pixmap = &pixmap_usplash_800x600,
   .font   = &font_helvB10,

   /* Palette indexes */
   .background             = 0,
   .progressbar_background = 0,
   .progressbar_foreground = 30,
   .text_background        = 0,
   .text_foreground        = 125,
   .text_success           = 125,
   .text_failure           = 215,

   /* Progress bar position and size in pixels */
   .progressbar_x      = 292, /* 800/2 - 216/2 */
   .progressbar_y      = 335, /* (strip2 height)+(logo height)+5 */
   .progressbar_width  = 216,
   .progressbar_height = 8,

   /* Text box position and size in pixels */
   .text_x      = 100, /* 100+600+100=800 */
   .text_y      = 345, /* Fit between progressbar and strip1 */
   .text_width  = 600,
   .text_height = 165, /* 11 lines */

   /* Text details */
   .line_height  = 15,
   .line_length  = 32,
   .status_width = 64,

    /* Functions */
    .init = t_init,
    .clear_progressbar = t_clear_progressbar,
    .draw_progressbar = t_draw_progressbar,
    .animate_step = t_animate_step,
};

struct usplash_theme usplash_theme_1024x768 = {
   .version = THEME_VERSION,
   .next = &usplash_theme_1280x1024,
   .ratio = USPLASH_4_3,

   /* Background and font */
   .pixmap = &pixmap_usplash_1024x768,
   .font   = &font_helvB10,

   /* Palette indexes */
   .background             = 0,
   .progressbar_background = 0,
   .progressbar_foreground = 30,
   .text_background        = 0,
   .text_foreground        = 125,
   .text_success           = 125,
   .text_failure           = 215,

   /* Progress bar position and size in pixels */
   .progressbar_x      = 404, /* 1024/2 - 216/2 */
   .progressbar_y      = 390, /* (strip2 height)+(logo height)+3 */
   .progressbar_width  = 216,
   .progressbar_height = 8,

   /* Text box position and size in pixels */
   .text_x      = 200, /* 200+624+200=1024 */
   .text_y      = 400, /* Fit between progressbar and strip1 */
   .text_width  = 624,
   .text_height = 270, /* 18 lines */

   /* Text details */
   .line_height  = 15,
   .line_length  = 32,
   .status_width = 64,

    /* Functions */
    .init = t_init,
    .clear_progressbar = t_clear_progressbar,
    .draw_progressbar = t_draw_progressbar,
    .animate_step = t_animate_step,
};

struct usplash_theme usplash_theme_1280x1024 = {
   .version = THEME_VERSION,
   .next = NULL,
   .ratio = USPLASH_4_3,

   /* Background and font */
   .pixmap = &pixmap_usplash_1280x1024,
   .font   = &font_helvB10,

   /* Palette indexes */
   .background             = 0,
   .progressbar_background = 0,
   .progressbar_foreground = 30,
   .text_background        = 0,
   .text_foreground        = 125,
   .text_success           = 125,
   .text_failure           = 215,

   /* Progress bar position and size in pixels */
   .progressbar_x      = 532, /* 1280/2 - 216/2 */
   .progressbar_y      = 460, /* (strip2 height)+(logo height)+6 */
   .progressbar_width  = 216,
   .progressbar_height = 8,

   /* Text box position and size in pixels */
   .text_x      = 200, /* 200+880+200=1280 */
   .text_y      = 475, /* Fit between progressbar and strip1 */
   .text_width  = 880,
   .text_height = 420, /* 28 lines */

   /* Text details */
   .line_height  = 15,
   .line_length  = 32,
   .status_width = 64,

    /* Functions */
    .init = t_init,
    .clear_progressbar = t_clear_progressbar,
    .draw_progressbar = t_draw_progressbar,
    .animate_step = t_animate_step,
};

void t_init(struct usplash_theme *theme) {
    int x, y;
    usplash_getdimensions(&x, &y);
    theme->progressbar_x = (x - theme->pixmap->width)/2 + theme->progressbar_x;
    theme->progressbar_y = (y - theme->pixmap->height)/2 + theme->progressbar_y;
}

void t_clear_progressbar(struct usplash_theme *theme) {
    t_draw_progressbar(theme, 0);
}

void t_draw_progressbar(struct usplash_theme *theme, int percentage) {
    int w = (pixmap_throbber_back.width * percentage / 100);
    usplash_put(theme->progressbar_x, theme->progressbar_y, &pixmap_throbber_back);

    if(percentage == 0)
        return;
    if(percentage < 0)
        usplash_put_part(theme->progressbar_x - w, theme->progressbar_y, pixmap_throbber_back.width + w,
                         pixmap_throbber_back.height, &pixmap_throbber_fore, -w, 0);
    else
        usplash_put_part(theme->progressbar_x, theme->progressbar_y, w, pixmap_throbber_back.height,
                         &pixmap_throbber_fore, 0, 0);
}

void t_animate_step(struct usplash_theme* theme, int pulsating) {

    static int pulsate_step = 0;
    static int pulse_width = 28;
    static int step_width = 2;
    static int num_steps = (216 - 28)/2;
    int x1;

    if (pulsating) {
        t_draw_progressbar(theme, 0);

        if(pulsate_step < num_steps/2+1)
            x1 = 2 * step_width * pulsate_step;
        else
            x1 = 216 - pulse_width - 2 * step_width * (pulsate_step - num_steps/2+1);

        usplash_put_part(theme->progressbar_x + x1, theme->progressbar_y, pulse_width,
                         pixmap_throbber_fore.height, &pixmap_throbber_fore, x1, 0);

        pulsate_step = (pulsate_step + 1) % num_steps;
    }

    /* Parallax Code */
    static short firstrun = 1;
    static int x = 640;
    static int y = 480;

    if(firstrun)
    {
        firstrun = 0;
        usplash_getdimensions(&x, &y);
    }
    /* Call the parallax function */
    if(x == 640 && y == 480)        t_parallax(0, 0, 420, 0,  640,  640,  60, 168,  92, 170, 1);
    else if(x == 800 && y == 600)   t_parallax(0, 0, 525, 0,  800,  800,  75, 209, 172, 210, 2);
    else if(x == 1024 && y == 768)  t_parallax(0, 0, 672, 0, 1024, 1024,  96, 268, 284, 269, 3);
    else if(x == 1280 && y == 1024) t_parallax(0, 0, 904, 0, 1280, 1280, 120, 335, 412, 336, 4);
}

/* Variable Descriptions*/
/* px = upper left coord of strip */
/* py = upper left coord of strip */
/* pw = half the width of strip image, for tessellation effect */
/* ph = we want to draw the full height of strip */
/* logoX = centered (ResWidth/2 - logoWidth/2) */
/* logoY = strip2 + 1 */

void t_parallax(short px1, short px2, short py1, short py2, short pw1, short pw2, short ph1, short ph2, short logoX, short logoY, short Res)
{

    static short ani1 = 0;
    static short ani2 = 0;

    /* Move this strip fast */
    if(ani1 < pw1) ani1 += 5;
    else           ani1  = 0;

    /* Move this strip slow */
    if(ani2 < pw2) ani2 += 1;
    else           ani2  = 0;

    /* Draw the scrolling strips */
    if(Res == 1)
    {
        usplash_put_part(px1, py1, pw1, ph1, &pixmap_strip1_640x480, ani1, 0); /* GRASS */
        usplash_put_part(px2, py2, pw2, ph2, &pixmap_strip2_640x480, ani2, 0); /* SKY */
    }
    else if(Res == 2)
    {
        usplash_put_part(px1, py1, pw1, ph1, &pixmap_strip1_800x600, ani1, 0);
        usplash_put_part(px2, py2, pw2, ph2, &pixmap_strip2_800x600, ani2, 0);
    }
    else if(Res == 3)
    {
        usplash_put_part(px1, py1, pw1, ph1, &pixmap_strip1_1024x768, ani1, 0);
        usplash_put_part(px2, py2, pw2, ph2, &pixmap_strip2_1024x768, ani2, 0);
    }
    else if(Res == 4)
    {
        usplash_put_part(px1, py1, pw1, ph1, &pixmap_strip1_1280x1024, ani1, 0);
        usplash_put_part(px2, py2, pw2, ph2, &pixmap_strip2_1280x1024, ani2, 0);
    }
    /* Draw the logo */
    usplash_put(logoX, logoY, &pixmap_logo);
}


[TheeMahn]

Hey all, I finally completed my parallax usplash and thought I would share:

You can download the full source HERE

parallax-theme.c posted for reference

Code: Select all

/* usplash
 *
 * parallax-theme.c
 * Copyright © 2008 red_team316
 * Original Code found throughout Copyright © 2006 Dennis Kaarsemaker
 *
 * Notes: Includes pallete index bugfix see URL below.
 * https://bugs.launchpad.net/ubuntu/+source/usplash/+bug/66760
 *
 * 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 */

#include <usplash-theme.h>
/* Needed for the custom drawing functions */
#include <usplash_backend.h>

extern struct usplash_pixmap pixmap_usplash_640x480;
extern struct usplash_pixmap pixmap_usplash_800x600;
extern struct usplash_pixmap pixmap_usplash_1024x768;
extern struct usplash_pixmap pixmap_usplash_1280x1024;

/* Parallax Pixmaps */
extern struct usplash_pixmap pixmap_logo;
extern struct usplash_pixmap pixmap_strip1_640x480;
extern struct usplash_pixmap pixmap_strip2_640x480;
extern struct usplash_pixmap pixmap_strip1_800x600;
extern struct usplash_pixmap pixmap_strip2_800x600;
extern struct usplash_pixmap pixmap_strip1_1024x768;
extern struct usplash_pixmap pixmap_strip2_1024x768;
extern struct usplash_pixmap pixmap_strip1_1280x1024;
extern struct usplash_pixmap pixmap_strip2_1280x1024;

extern struct usplash_pixmap pixmap_throbber_back;
extern struct usplash_pixmap pixmap_throbber_fore;
extern struct usplash_font font_helvB10;

void t_init(struct usplash_theme* theme);
void t_clear_progressbar(struct usplash_theme* theme);
void t_draw_progressbar(struct usplash_theme* theme, int percentage);
void t_animate_step(struct usplash_theme* theme, int pulsating);

struct usplash_theme usplash_theme_640x480;
struct usplash_theme usplash_theme_800x600;
struct usplash_theme usplash_theme_1024x768;
struct usplash_theme usplash_theme_1280x1024;

/* Theme definition */
struct usplash_theme usplash_theme = {
   .version = THEME_VERSION,
   .next = &usplash_theme_800x600,
   .ratio = USPLASH_4_3,

   /* Background and font */
   .pixmap = &pixmap_usplash_640x480,
   .font   = &font_helvB10,

   /* Palette indexes */
   .background             = 0,
   .progressbar_background = 0,
   .progressbar_foreground = 30,
   .text_background        = 0,
   .text_foreground        = 125,
   .text_success           = 125,
   .text_failure           = 215,

   /* Progress bar position and size in pixels */
   .progressbar_x      = 212, /* 640/2-216/2 */
   .progressbar_y      = 290, /* (strip2 height)+(logo height)+3 */
   .progressbar_width  = 216,
   .progressbar_height = 8,

   /* Text box position and size in pixels */                          /*                          */
   .text_x      = 100, /* 100+440+100=640 */                           /*   x,y-----------------   */
   .text_y      = 310, /* Fit between progressbar and strip1 */        /*   |                  |   */
   .text_width  = 440,                                                 /*   -----------------w,h   */
   .text_height = 105, /* 7 lines */                                   /*                          */

   /* Text details */
   .line_height  = 15,   /* Height of line in pixels */
   .line_length  = 32,   /* Length of line in characters */
   .status_width = 64,   /* Number of RHS pixels for status */

    /* Functions */
    .init = t_init,
    .clear_progressbar = t_clear_progressbar,
    .draw_progressbar = t_draw_progressbar,
    .animate_step = t_animate_step,
};

struct usplash_theme usplash_theme_800x600 = {
   .version = THEME_VERSION,
   .next = &usplash_theme_1024x768,
   .ratio = USPLASH_4_3,

   /* Background and font */
   .pixmap = &pixmap_usplash_800x600,
   .font   = &font_helvB10,

   /* Palette indexes */
   .background             = 0,
   .progressbar_background = 0,
   .progressbar_foreground = 30,
   .text_background        = 0,
   .text_foreground        = 125,
   .text_success           = 125,
   .text_failure           = 215,

   /* Progress bar position and size in pixels */
   .progressbar_x      = 292, /* 800/2 - 216/2 */
   .progressbar_y      = 335, /* (strip2 height)+(logo height)+5 */
   .progressbar_width  = 216,
   .progressbar_height = 8,

   /* Text box position and size in pixels */
   .text_x      = 100, /* 100+600+100=800 */
   .text_y      = 345, /* Fit between progressbar and strip1 */
   .text_width  = 600,
   .text_height = 165, /* 11 lines */

   /* Text details */
   .line_height  = 15,
   .line_length  = 32,
   .status_width = 64,

    /* Functions */
    .init = t_init,
    .clear_progressbar = t_clear_progressbar,
    .draw_progressbar = t_draw_progressbar,
    .animate_step = t_animate_step,
};

struct usplash_theme usplash_theme_1024x768 = {
   .version = THEME_VERSION,
   .next = &usplash_theme_1280x1024,
   .ratio = USPLASH_4_3,

   /* Background and font */
   .pixmap = &pixmap_usplash_1024x768,
   .font   = &font_helvB10,

   /* Palette indexes */
   .background             = 0,
   .progressbar_background = 0,
   .progressbar_foreground = 30,
   .text_background        = 0,
   .text_foreground        = 125,
   .text_success           = 125,
   .text_failure           = 215,

   /* Progress bar position and size in pixels */
   .progressbar_x      = 404, /* 1024/2 - 216/2 */
   .progressbar_y      = 390, /* (strip2 height)+(logo height)+3 */
   .progressbar_width  = 216,
   .progressbar_height = 8,

   /* Text box position and size in pixels */
   .text_x      = 200, /* 200+624+200=1024 */
   .text_y      = 400, /* Fit between progressbar and strip1 */
   .text_width  = 624,
   .text_height = 270, /* 18 lines */

   /* Text details */
   .line_height  = 15,
   .line_length  = 32,
   .status_width = 64,

    /* Functions */
    .init = t_init,
    .clear_progressbar = t_clear_progressbar,
    .draw_progressbar = t_draw_progressbar,
    .animate_step = t_animate_step,
};

struct usplash_theme usplash_theme_1280x1024 = {
   .version = THEME_VERSION,
   .next = NULL,
   .ratio = USPLASH_4_3,

   /* Background and font */
   .pixmap = &pixmap_usplash_1280x1024,
   .font   = &font_helvB10,

   /* Palette indexes */
   .background             = 0,
   .progressbar_background = 0,
   .progressbar_foreground = 30,
   .text_background        = 0,
   .text_foreground        = 125,
   .text_success           = 125,
   .text_failure           = 215,

   /* Progress bar position and size in pixels */
   .progressbar_x      = 532, /* 1280/2 - 216/2 */
   .progressbar_y      = 460, /* (strip2 height)+(logo height)+6 */
   .progressbar_width  = 216,
   .progressbar_height = 8,

   /* Text box position and size in pixels */
   .text_x      = 200, /* 200+880+200=1280 */
   .text_y      = 475, /* Fit between progressbar and strip1 */
   .text_width  = 880,
   .text_height = 420, /* 28 lines */

   /* Text details */
   .line_height  = 15,
   .line_length  = 32,
   .status_width = 64,

    /* Functions */
    .init = t_init,
    .clear_progressbar = t_clear_progressbar,
    .draw_progressbar = t_draw_progressbar,
    .animate_step = t_animate_step,
};

void t_init(struct usplash_theme *theme) {
    int x, y;
    usplash_getdimensions(&x, &y);
    theme->progressbar_x = (x - theme->pixmap->width)/2 + theme->progressbar_x;
    theme->progressbar_y = (y - theme->pixmap->height)/2 + theme->progressbar_y;
}

void t_clear_progressbar(struct usplash_theme *theme) {
    t_draw_progressbar(theme, 0);
}

void t_draw_progressbar(struct usplash_theme *theme, int percentage) {
    int w = (pixmap_throbber_back.width * percentage / 100);
    usplash_put(theme->progressbar_x, theme->progressbar_y, &pixmap_throbber_back);

    if(percentage == 0)
        return;
    if(percentage < 0)
        usplash_put_part(theme->progressbar_x - w, theme->progressbar_y, pixmap_throbber_back.width + w,
                         pixmap_throbber_back.height, &pixmap_throbber_fore, -w, 0);
    else
        usplash_put_part(theme->progressbar_x, theme->progressbar_y, w, pixmap_throbber_back.height,
                         &pixmap_throbber_fore, 0, 0);
}

void t_animate_step(struct usplash_theme* theme, int pulsating) {

    static int pulsate_step = 0;
    static int pulse_width = 28;
    static int step_width = 2;
    static int num_steps = (216 - 28)/2;
    int x1;

    if (pulsating) {
        t_draw_progressbar(theme, 0);

        if(pulsate_step < num_steps/2+1)
            x1 = 2 * step_width * pulsate_step;
        else
            x1 = 216 - pulse_width - 2 * step_width * (pulsate_step - num_steps/2+1);

        usplash_put_part(theme->progressbar_x + x1, theme->progressbar_y, pulse_width,
                         pixmap_throbber_fore.height, &pixmap_throbber_fore, x1, 0);

        pulsate_step = (pulsate_step + 1) % num_steps;
    }

    /* Parallax Code */         /* Variable Descriptions*/
    static short firstrun = 1;  /* firstrun = ensure this block of code is only run once */
    static short ani1 = 0;      /* ani1 = pixel offset for scrolling strip1 */
    static short ani2 = 0;      /* ani2 = pixel offset for scrolling strip2 */

    static short resX = 640;    /* resX  = holds the x value of the resolution  */
    static short resY = 480;    /* resY  = holds the y value of the resolution  */
    static short px1 = 0;       /* px1   = upper left coord of strip1 */
    static short px2 = 0;       /* px2   = upper left coord of strip2 */
    static short py1 = 420;     /* py1   = upper left coord of strip1 */
    static short py2 = 0;       /* py2   = upper left coord of strip2 */
    static short pw1 = 640;     /* pw1   = half the width of strip image, for tessellation effect */
    static short pw2 = 640;     /* pw2   = half the width of strip image, for tessellation effect */
    static short ph1 = 60;      /* ph1   = we want to draw the full height of strip */
    static short ph2 = 168;     /* ph2   = we want to draw the full height of strip */
    static short logoX = 92;    /* logoX = centered (ResWidth/2 - logoWidth/2) */
    static short logoY = 170;   /* logoY = strip2 height + 1 */

    if(firstrun)
    {
        firstrun = 0;
        int x, y;
        usplash_getdimensions(&x, &y);
        if(x == 800 && y == 600)
        {
            resX = 800; resY = 600; logoX = 172; logoY = 210;
            px1 = 0; py1 = 525; pw1 = 800; ph1 = 75;
            px2 = 0; py2 = 0;   pw2 = 800; ph2 = 209;
        }
        else if(x == 1024 && y == 768)
        {
            resX = 1024; resY = 768; logoX = 284; logoY = 269;
            px1 = 0; py1 = 672; pw1 = 1024; ph1 = 96;
            px2 = 0; py2 = 0;   pw2 = 1024; ph2 = 268;
        }
        else if(x == 1280 && y == 1024)
        {
            resX = 1280;  resY = 1024; logoX = 412; logoY = 336;
            px1 = 0; py1 = 904; pw1 = 1280; ph1 = 120;
            px2 = 0; py2 = 0;   pw2 = 1280; ph2 = 335;
        }
    }

    /* Move this strip fast */
    if(ani1 < pw1) ani1 += 5;
    else           ani1  = 0;

    /* Move this strip slow */
    if(ani2 < pw2) ani2 += 1;
    else           ani2  = 0;

    /* Draw the scrolling strips */
    if(resX == 640 && resY == 480)
    {
        usplash_put_part(px1, py1, pw1, ph1, &pixmap_strip1_640x480, ani1, 0); /* GRASS */
        usplash_put_part(px2, py2, pw2, ph2, &pixmap_strip2_640x480, ani2, 0); /* SKY */
    }
    else if(resX == 800 && resY == 600)
    {
        usplash_put_part(px1, py1, pw1, ph1, &pixmap_strip1_800x600, ani1, 0);
        usplash_put_part(px2, py2, pw2, ph2, &pixmap_strip2_800x600, ani2, 0);
    }
    else if(resX == 1024 && resY == 768)
    {
        usplash_put_part(px1, py1, pw1, ph1, &pixmap_strip1_1024x768, ani1, 0);
        usplash_put_part(px2, py2, pw2, ph2, &pixmap_strip2_1024x768, ani2, 0);
    }
    else if(resX == 1280 && resY == 1024)
    {
        usplash_put_part(px1, py1, pw1, ph1, &pixmap_strip1_1280x1024, ani1, 0);
        usplash_put_part(px2, py2, pw2, ph2, &pixmap_strip2_1280x1024, ani2, 0);
    }
    /* Draw the logo */
    usplash_put(logoX, logoY, &pixmap_logo);
}


parallax-theme-function.c posted for reference

Code: Select all

/* usplash
 *
 * parallax-theme.c
 * Copyright © 2008 red_team316
 * Original Code found throughout Copyright © 2006 Dennis Kaarsemaker
 *
 * Notes: Includes pallete index bugfix see URL below.
 * https://bugs.launchpad.net/ubuntu/+source/usplash/+bug/66760
 *
 * 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 */

#include <usplash-theme.h>
/* Needed for the custom drawing functions */
#include <usplash_backend.h>

extern struct usplash_pixmap pixmap_usplash_640x480;
extern struct usplash_pixmap pixmap_usplash_800x600;
extern struct usplash_pixmap pixmap_usplash_1024x768;
extern struct usplash_pixmap pixmap_usplash_1280x1024;

/* Parallax Pixmaps */
extern struct usplash_pixmap pixmap_logo;
extern struct usplash_pixmap pixmap_strip1_640x480;
extern struct usplash_pixmap pixmap_strip2_640x480;
extern struct usplash_pixmap pixmap_strip1_800x600;
extern struct usplash_pixmap pixmap_strip2_800x600;
extern struct usplash_pixmap pixmap_strip1_1024x768;
extern struct usplash_pixmap pixmap_strip2_1024x768;
extern struct usplash_pixmap pixmap_strip1_1280x1024;
extern struct usplash_pixmap pixmap_strip2_1280x1024;

extern struct usplash_pixmap pixmap_throbber_back;
extern struct usplash_pixmap pixmap_throbber_fore;
extern struct usplash_font font_helvB10;

void t_init(struct usplash_theme* theme);
void t_clear_progressbar(struct usplash_theme* theme);
void t_draw_progressbar(struct usplash_theme* theme, int percentage);
void t_animate_step(struct usplash_theme* theme, int pulsating);
void t_parallax(short px1, short px2, short py1, short py2, short pw1, short pw2, short ph1, short ph2, short logoX, short logoY, short Res);

struct usplash_theme usplash_theme_640x480;
struct usplash_theme usplash_theme_800x600;
struct usplash_theme usplash_theme_1024x768;
struct usplash_theme usplash_theme_1280x1024;

/* Theme definition */
struct usplash_theme usplash_theme = {
   .version = THEME_VERSION,
   .next = &usplash_theme_800x600,
   .ratio = USPLASH_4_3,

   /* Background and font */
   .pixmap = &pixmap_usplash_640x480,
   .font   = &font_helvB10,

   /* Palette indexes */
   .background             = 0,
   .progressbar_background = 0,
   .progressbar_foreground = 30,
   .text_background        = 0,
   .text_foreground        = 125,
   .text_success           = 125,
   .text_failure           = 215,

   /* Progress bar position and size in pixels */
   .progressbar_x      = 212, /* 640/2-216/2 */
   .progressbar_y      = 290, /* (strip2 height)+(logo height)+3 */
   .progressbar_width  = 216,
   .progressbar_height = 8,

   /* Text box position and size in pixels */                          /*                          */
   .text_x      = 100, /* 100+440+100=640 */                           /*   x,y-----------------   */
   .text_y      = 310, /* Fit between progressbar and strip1 */        /*   |                  |   */
   .text_width  = 440,                                                 /*   -----------------w,h   */
   .text_height = 105, /* 7 lines */                                   /*                          */

   /* Text details */
   .line_height  = 15,   /* Height of line in pixels */
   .line_length  = 32,   /* Length of line in characters */
   .status_width = 64,   /* Number of RHS pixels for status */

    /* Functions */
    .init = t_init,
    .clear_progressbar = t_clear_progressbar,
    .draw_progressbar = t_draw_progressbar,
    .animate_step = t_animate_step,
};

struct usplash_theme usplash_theme_800x600 = {
   .version = THEME_VERSION,
   .next = &usplash_theme_1024x768,
   .ratio = USPLASH_4_3,

   /* Background and font */
   .pixmap = &pixmap_usplash_800x600,
   .font   = &font_helvB10,

   /* Palette indexes */
   .background             = 0,
   .progressbar_background = 0,
   .progressbar_foreground = 30,
   .text_background        = 0,
   .text_foreground        = 125,
   .text_success           = 125,
   .text_failure           = 215,

   /* Progress bar position and size in pixels */
   .progressbar_x      = 292, /* 800/2 - 216/2 */
   .progressbar_y      = 335, /* (strip2 height)+(logo height)+5 */
   .progressbar_width  = 216,
   .progressbar_height = 8,

   /* Text box position and size in pixels */
   .text_x      = 100, /* 100+600+100=800 */
   .text_y      = 345, /* Fit between progressbar and strip1 */
   .text_width  = 600,
   .text_height = 165, /* 11 lines */

   /* Text details */
   .line_height  = 15,
   .line_length  = 32,
   .status_width = 64,

    /* Functions */
    .init = t_init,
    .clear_progressbar = t_clear_progressbar,
    .draw_progressbar = t_draw_progressbar,
    .animate_step = t_animate_step,
};

struct usplash_theme usplash_theme_1024x768 = {
   .version = THEME_VERSION,
   .next = &usplash_theme_1280x1024,
   .ratio = USPLASH_4_3,

   /* Background and font */
   .pixmap = &pixmap_usplash_1024x768,
   .font   = &font_helvB10,

   /* Palette indexes */
   .background             = 0,
   .progressbar_background = 0,
   .progressbar_foreground = 30,
   .text_background        = 0,
   .text_foreground        = 125,
   .text_success           = 125,
   .text_failure           = 215,

   /* Progress bar position and size in pixels */
   .progressbar_x      = 404, /* 1024/2 - 216/2 */
   .progressbar_y      = 390, /* (strip2 height)+(logo height)+3 */
   .progressbar_width  = 216,
   .progressbar_height = 8,

   /* Text box position and size in pixels */
   .text_x      = 200, /* 200+624+200=1024 */
   .text_y      = 400, /* Fit between progressbar and strip1 */
   .text_width  = 624,
   .text_height = 270, /* 18 lines */

   /* Text details */
   .line_height  = 15,
   .line_length  = 32,
   .status_width = 64,

    /* Functions */
    .init = t_init,
    .clear_progressbar = t_clear_progressbar,
    .draw_progressbar = t_draw_progressbar,
    .animate_step = t_animate_step,
};

struct usplash_theme usplash_theme_1280x1024 = {
   .version = THEME_VERSION,
   .next = NULL,
   .ratio = USPLASH_4_3,

   /* Background and font */
   .pixmap = &pixmap_usplash_1280x1024,
   .font   = &font_helvB10,

   /* Palette indexes */
   .background             = 0,
   .progressbar_background = 0,
   .progressbar_foreground = 30,
   .text_background        = 0,
   .text_foreground        = 125,
   .text_success           = 125,
   .text_failure           = 215,

   /* Progress bar position and size in pixels */
   .progressbar_x      = 532, /* 1280/2 - 216/2 */
   .progressbar_y      = 460, /* (strip2 height)+(logo height)+6 */
   .progressbar_width  = 216,
   .progressbar_height = 8,

   /* Text box position and size in pixels */
   .text_x      = 200, /* 200+880+200=1280 */
   .text_y      = 475, /* Fit between progressbar and strip1 */
   .text_width  = 880,
   .text_height = 420, /* 28 lines */

   /* Text details */
   .line_height  = 15,
   .line_length  = 32,
   .status_width = 64,

    /* Functions */
    .init = t_init,
    .clear_progressbar = t_clear_progressbar,
    .draw_progressbar = t_draw_progressbar,
    .animate_step = t_animate_step,
};

void t_init(struct usplash_theme *theme) {
    int x, y;
    usplash_getdimensions(&x, &y);
    theme->progressbar_x = (x - theme->pixmap->width)/2 + theme->progressbar_x;
    theme->progressbar_y = (y - theme->pixmap->height)/2 + theme->progressbar_y;
}

void t_clear_progressbar(struct usplash_theme *theme) {
    t_draw_progressbar(theme, 0);
}

void t_draw_progressbar(struct usplash_theme *theme, int percentage) {
    int w = (pixmap_throbber_back.width * percentage / 100);
    usplash_put(theme->progressbar_x, theme->progressbar_y, &pixmap_throbber_back);

    if(percentage == 0)
        return;
    if(percentage < 0)
        usplash_put_part(theme->progressbar_x - w, theme->progressbar_y, pixmap_throbber_back.width + w,
                         pixmap_throbber_back.height, &pixmap_throbber_fore, -w, 0);
    else
        usplash_put_part(theme->progressbar_x, theme->progressbar_y, w, pixmap_throbber_back.height,
                         &pixmap_throbber_fore, 0, 0);
}

void t_animate_step(struct usplash_theme* theme, int pulsating) {

    static int pulsate_step = 0;
    static int pulse_width = 28;
    static int step_width = 2;
    static int num_steps = (216 - 28)/2;
    int x1;

    if (pulsating) {
        t_draw_progressbar(theme, 0);

        if(pulsate_step < num_steps/2+1)
            x1 = 2 * step_width * pulsate_step;
        else
            x1 = 216 - pulse_width - 2 * step_width * (pulsate_step - num_steps/2+1);

        usplash_put_part(theme->progressbar_x + x1, theme->progressbar_y, pulse_width,
                         pixmap_throbber_fore.height, &pixmap_throbber_fore, x1, 0);

        pulsate_step = (pulsate_step + 1) % num_steps;
    }

    /* Parallax Code */
    static short firstrun = 1;
    static int x = 640;
    static int y = 480;

    if(firstrun)
    {
        firstrun = 0;
        usplash_getdimensions(&x, &y);
    }
    /* Call the parallax function */
    if(x == 640 && y == 480)        t_parallax(0, 0, 420, 0,  640,  640,  60, 168,  92, 170, 1);
    else if(x == 800 && y == 600)   t_parallax(0, 0, 525, 0,  800,  800,  75, 209, 172, 210, 2);
    else if(x == 1024 && y == 768)  t_parallax(0, 0, 672, 0, 1024, 1024,  96, 268, 284, 269, 3);
    else if(x == 1280 && y == 1024) t_parallax(0, 0, 904, 0, 1280, 1280, 120, 335, 412, 336, 4);
}

/* Variable Descriptions*/
/* px = upper left coord of strip */
/* py = upper left coord of strip */
/* pw = half the width of strip image, for tessellation effect */
/* ph = we want to draw the full height of strip */
/* logoX = centered (ResWidth/2 - logoWidth/2) */
/* logoY = strip2 + 1 */

void t_parallax(short px1, short px2, short py1, short py2, short pw1, short pw2, short ph1, short ph2, short logoX, short logoY, short Res)
{

    static short ani1 = 0;
    static short ani2 = 0;

    /* Move this strip fast */
    if(ani1 < pw1) ani1 += 5;
    else           ani1  = 0;

    /* Move this strip slow */
    if(ani2 < pw2) ani2 += 1;
    else           ani2  = 0;

    /* Draw the scrolling strips */
    if(Res == 1)
    {
        usplash_put_part(px1, py1, pw1, ph1, &pixmap_strip1_640x480, ani1, 0); /* GRASS */
        usplash_put_part(px2, py2, pw2, ph2, &pixmap_strip2_640x480, ani2, 0); /* SKY */
    }
    else if(Res == 2)
    {
        usplash_put_part(px1, py1, pw1, ph1, &pixmap_strip1_800x600, ani1, 0);
        usplash_put_part(px2, py2, pw2, ph2, &pixmap_strip2_800x600, ani2, 0);
    }
    else if(Res == 3)
    {
        usplash_put_part(px1, py1, pw1, ph1, &pixmap_strip1_1024x768, ani1, 0);
        usplash_put_part(px2, py2, pw2, ph2, &pixmap_strip2_1024x768, ani2, 0);
    }
    else if(Res == 4)
    {
        usplash_put_part(px1, py1, pw1, ph1, &pixmap_strip1_1280x1024, ani1, 0);
        usplash_put_part(px2, py2, pw2, ph2, &pixmap_strip2_1280x1024, ani2, 0);
    }
    /* Draw the logo */
    usplash_put(logoX, logoY, &pixmap_logo);
}


Good job, I will have to "play" with it I am not sure how intrepid based Ultimate Edition 2.0 will view it, will let you know.

[slowflow]

Great idea RT-316

Just out of curiosity, how many parallax planes are you using/aiming for?

[red_team316]

It just uses 2, 1 for the grass and 1 for the sky. The logo and progress bars are stationary in the middle of the screen as a normal usplash would be. Sure, I could have added more planes/layers to increase the parallaxing effect, but it would have taken much longer to produce. Getting the textbox to fit in the correct place and calculating line heights and positioning took the most time because I had to do it for each resolution. If someone wants to re-use it with different (height) graphics, then they will need to recalculate all the positioning to make it look good in verbose mode.

To be honest, I was planning on using more layers and actually overlapping them, but it appears that usplash likes to flicker when 1 graphic is blitted on top of the other, so it would have looked glitchy even though my code was correct. You've probably noticed that most normal usplashes flicker slightly while the progress bar is pulsating, well, that is what I mean, but imagine it all over the screen where the parallax layers would overlap. Thats why I stuck with a simple 2 layer design and made sure that nothing overlapped. I personally would consider it a bug and really hope that the usplash devs fix that flickering in the future.


I remember Thee said he had some sort of Pi/circular usplash a long time ago but I dont think it ever saw the light of day. I too have a Pi/circular type of usplash but havent released anything on it due to the flickering bug described above.

[slowflow]

Thanks for the reply RT_316

Parallax effects in a usplash is such a sweet idea!
Flickering, however slight is to be avoided, as people will just call your efforts glitchy & buggy. I await the finished article, I'd have compiled it from the source you provided already, however I'm on holiday & away from my PC for another week.

In advance, may I say that, I appreciate your efforts RT_316

[red_team316]

Well, you shouldn't see any flickering in it. Thats the main reason I made sure nothing overlapped. If you experience any flickering at all, it will be in the progress bar when it is pulsating, and that is no different that a standard ubuntu cd shipped from canonical so if someone things it's buggy for that, then they need to look at canonical.

I suppose that brings up another point though, maybe there should be an alternate way of drawing the progress bar at least until someone addresses the flickering issue.

It pretty much is finished unless I decide to add more layers later or someone comes up with a real neat idea to add to it. I am planning on coming out with more types of usplashes just to show whats possible with usplash, so if you've got ideas for something new and different, let me know and I'll see if it's feasible.

There should be 32 and 64 bit usplashes already compiled in the download. You can install it easy with usplash-switcher but the preview will not look right but it will install fine. Thats not my fault, as usplash-switcher is just a hacked up program made by Dennis to make things easy. His prog just assumes that everything is going to be a standard usplash

[NacIK]

Parallax???!? What is it?

[pch.shot]

http://en.wikipedia.org/wiki/Parallax
If you want to know what something is go here:
http://en.wikipedia.org/wiki/Main_Page

[NacIK]

Sorry, brainfart.

[red_team316]

I have updated my parallax usplash to be Intrepid Ibex (8.10) compatible.
It can be found here:
http://www.kde-look.org/content/show.ph ... tent=89780