gstreamer/gst/goom/tentacle3d.c

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/* Goom Project
* Copyright (C) <2003> iOS-Software
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include <stdlib.h>
#include "v3d.h"
#include "surf3d.h"
#include "goom_tools.h"
#include "goom_config.h"
#include "goom_plugin_info.h"
#include "tentacle3d.h"
#define D 256.0f
#define nbgrid 6
#define definitionx 15
#define definitionz 45
typedef struct _TENTACLE_FX_DATA
{
PluginParam enabled_bp;
PluginParameters params;
float cycle;
grid3d *grille[nbgrid];
float *vals;
#define NB_TENTACLE_COLORS 4
int colors[NB_TENTACLE_COLORS];
int col;
int dstcol;
float lig;
float ligs;
/* statics from pretty_move */
float distt;
float distt2;
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float rot; /* entre 0 et 2 * G_PI */
int happens;
int rotation;
int lock;
} TentacleFXData;
static void tentacle_new (TentacleFXData * data);
static void tentacle_update (PluginInfo * goomInfo, Pixel * buf, Pixel * back,
int W, int H, short[2][512], float, int drawit, TentacleFXData * data);
static void tentacle_free (TentacleFXData * data);
/*
* VisualFX wrapper for the tentacles
*/
static void
tentacle_fx_init (VisualFX * _this, PluginInfo * info)
{
TentacleFXData *data = (TentacleFXData *) malloc (sizeof (TentacleFXData));
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secure_b_param (&data->enabled_bp, "Enabled", 1);
plugin_parameters (&data->params, "3D Tentacles", 1);
data->params.params[0] = &data->enabled_bp;
data->cycle = 0.0f;
data->col =
(0x28 << (ROUGE * 8)) | (0x2c << (VERT * 8)) | (0x5f << (BLEU * 8));
data->dstcol = 0;
data->lig = 1.15f;
data->ligs = 0.1f;
data->distt = 10.0f;
data->distt2 = 0.0f;
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data->rot = 0.0f; /* entre 0 et 2 * G_PI */
data->happens = 0;
data->rotation = 0;
data->lock = 0;
data->colors[0] =
(0x18 << (ROUGE * 8)) | (0x4c << (VERT * 8)) | (0x2f << (BLEU * 8));
data->colors[1] =
(0x48 << (ROUGE * 8)) | (0x2c << (VERT * 8)) | (0x6f << (BLEU * 8));
data->colors[2] =
(0x58 << (ROUGE * 8)) | (0x3c << (VERT * 8)) | (0x0f << (BLEU * 8));
data->colors[3] =
(0x87 << (ROUGE * 8)) | (0x55 << (VERT * 8)) | (0x74 << (BLEU * 8));
tentacle_new (data);
_this->params = &data->params;
_this->fx_data = (void *) data;
}
static void
tentacle_fx_apply (VisualFX * _this, Pixel * src, Pixel * dest,
PluginInfo * goomInfo)
{
TentacleFXData *data = (TentacleFXData *) _this->fx_data;
if (BVAL (data->enabled_bp)) {
tentacle_update (goomInfo, dest, src, goomInfo->screen.width,
goomInfo->screen.height, goomInfo->sound.samples,
(float) goomInfo->sound.accelvar,
goomInfo->curGState->drawTentacle, data);
}
}
static void
tentacle_fx_free (VisualFX * _this)
{
tentacle_free ((TentacleFXData *) _this->fx_data);
free (_this->fx_data);
}
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void
tentacle_fx_create (VisualFX * fx)
{
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fx->init = tentacle_fx_init;
fx->apply = tentacle_fx_apply;
fx->free = tentacle_fx_free;
fx->fx_data = NULL;
fx->params = NULL;
}
/* ----- */
static void
tentacle_free (TentacleFXData * data)
{
int tmp;
/* FREE GRID */
for (tmp = 0; tmp < nbgrid; tmp++)
grid3d_free (data->grille[tmp]);
free (data->vals);
goom_plugin_parameters_free (&data->params);
}
static void
tentacle_new (TentacleFXData * data)
{
int tmp;
v3d center = { 0, -17.0, 0 };
data->vals = (float *) malloc ((definitionx + 20) * sizeof (float));
for (tmp = 0; tmp < nbgrid; tmp++) {
int x, z;
z = 45 + rand () % 30;
x = 85 + rand () % 5;
center.z = z;
data->grille[tmp] =
grid3d_new (x, definitionx, z, definitionz + rand () % 10, center);
center.y += 8;
}
}
static inline unsigned char
lighten (unsigned char value, float power)
{
int val = value;
float t = (float) val * log10 (power) / 2.0;
if (t > 0) {
val = (int) t; /* (32.0f * log (t)); */
if (val > 255)
val = 255;
if (val < 0)
val = 0;
return val;
} else {
return 0;
}
}
static void
lightencolor (int *col, float power)
{
unsigned char *color;
color = (unsigned char *) col;
*color = lighten (*color, power);
color++;
*color = lighten (*color, power);
color++;
*color = lighten (*color, power);
color++;
*color = lighten (*color, power);
}
/* retourne x>>s , en testant le signe de x */
#define ShiftRight(_x,_s) ((_x<0) ? -(-_x>>_s) : (_x>>_s))
static int
evolutecolor (unsigned int src, unsigned int dest,
unsigned int mask, unsigned int incr)
{
int color = src & (~mask);
src &= mask;
dest &= mask;
if ((src != mask)
&& (src < dest))
src += incr;
if (src > dest)
src -= incr;
return (src & mask) | color;
}
static void
pretty_move (PluginInfo * goomInfo, float cycle, float *dist, float *dist2,
float *rotangle, TentacleFXData * fx_data)
{
float tmp;
/* many magic numbers here... I don't really like that. */
if (fx_data->happens)
fx_data->happens -= 1;
else if (fx_data->lock == 0) {
fx_data->happens =
goom_irand (goomInfo->gRandom,
200) ? 0 : 100 + goom_irand (goomInfo->gRandom, 60);
fx_data->lock = fx_data->happens * 3 / 2;
} else
fx_data->lock--;
tmp = fx_data->happens ? 8.0f : 0;
*dist2 = fx_data->distt2 = (tmp + 15.0f * fx_data->distt2) / 16.0f;
tmp = 30 + D - 90.0f * (1.0f + sin (cycle * 19 / 20));
if (fx_data->happens)
tmp *= 0.6f;
*dist = fx_data->distt = (tmp + 3.0f * fx_data->distt) / 4.0f;
if (!fx_data->happens) {
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tmp = G_PI * sin (cycle) / 32 + 3 * G_PI / 2;
} else {
fx_data->rotation =
goom_irand (goomInfo->gRandom,
500) ? fx_data->rotation : goom_irand (goomInfo->gRandom, 2);
if (fx_data->rotation)
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cycle *= 2.0f * G_PI;
else
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cycle *= -1.0f * G_PI;
tmp = cycle - (G_PI * 2.0) * floor (cycle / (G_PI * 2.0));
}
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if (abs (tmp - fx_data->rot) > abs (tmp - (fx_data->rot + 2.0 * G_PI))) {
fx_data->rot = (tmp + 15.0f * (fx_data->rot + 2 * G_PI)) / 16.0f;
if (fx_data->rot > 2.0 * G_PI)
fx_data->rot -= 2.0 * G_PI;
*rotangle = fx_data->rot;
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} else if (abs (tmp - fx_data->rot) > abs (tmp - (fx_data->rot - 2.0 * G_PI))) {
fx_data->rot = (tmp + 15.0f * (fx_data->rot - 2.0 * G_PI)) / 16.0f;
if (fx_data->rot < 0.0f)
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fx_data->rot += 2.0 * G_PI;
*rotangle = fx_data->rot;
} else
*rotangle = fx_data->rot = (tmp + 15.0f * fx_data->rot) / 16.0f;
}
static void
tentacle_update (PluginInfo * goomInfo, Pixel * buf, Pixel * back, int W, int H,
short data[2][512], float rapport, int drawit, TentacleFXData * fx_data)
{
int tmp;
int tmp2;
int color;
int colorlow;
float dist, dist2, rotangle;
if ((!drawit) && (fx_data->ligs > 0.0f))
fx_data->ligs = -fx_data->ligs;
fx_data->lig += fx_data->ligs;
if (fx_data->lig > 1.01f) {
if ((fx_data->lig > 10.0f) | (fx_data->lig < 1.1f))
fx_data->ligs = -fx_data->ligs;
if ((fx_data->lig < 6.3f) && (goom_irand (goomInfo->gRandom, 30) == 0))
fx_data->dstcol = goom_irand (goomInfo->gRandom, NB_TENTACLE_COLORS);
fx_data->col =
evolutecolor (fx_data->col, fx_data->colors[fx_data->dstcol], 0xff,
0x01);
fx_data->col =
evolutecolor (fx_data->col, fx_data->colors[fx_data->dstcol], 0xff00,
0x0100);
fx_data->col =
evolutecolor (fx_data->col, fx_data->colors[fx_data->dstcol], 0xff0000,
0x010000);
fx_data->col =
evolutecolor (fx_data->col, fx_data->colors[fx_data->dstcol],
0xff000000, 0x01000000);
color = fx_data->col;
colorlow = fx_data->col;
lightencolor (&color, fx_data->lig * 2.0f + 2.0f);
lightencolor (&colorlow, (fx_data->lig / 3.0f) + 0.67f);
rapport = 1.0f + 2.0f * (rapport - 1.0f);
rapport *= 1.2f;
if (rapport > 1.12f)
rapport = 1.12f;
pretty_move (goomInfo, fx_data->cycle, &dist, &dist2, &rotangle, fx_data);
for (tmp = 0; tmp < nbgrid; tmp++) {
for (tmp2 = 0; tmp2 < definitionx; tmp2++) {
float val =
(float) (ShiftRight (data[0][goom_irand (goomInfo->gRandom, 511)],
10)) * rapport;
fx_data->vals[tmp2] = val;
}
grid3d_update (fx_data->grille[tmp], rotangle, fx_data->vals, dist2);
}
fx_data->cycle += 0.01f;
for (tmp = 0; tmp < nbgrid; tmp++)
grid3d_draw (goomInfo, fx_data->grille[tmp], color, colorlow, dist, buf,
back, W, H);
} else {
fx_data->lig = 1.05f;
if (fx_data->ligs < 0.0f)
fx_data->ligs = -fx_data->ligs;
pretty_move (goomInfo, fx_data->cycle, &dist, &dist2, &rotangle, fx_data);
fx_data->cycle += 0.1f;
if (fx_data->cycle > 1000)
fx_data->cycle = 0;
}
}