void
padsynth_oscillator(unsigned long sample_count, y_sosc_t *sosc,
y_voice_t *voice, struct vosc *vosc, int index, float w0)
{
unsigned long sample;
float w, w_delta,
level_a, level_a_delta,
level_b, level_b_delta;
float f;
int i, ready;
i = y_voice_mod_index(sosc->pitch_mod_src);
f = *(sosc->pitch_mod_amt);
w = 1.0f + f * voice->mod[i].value;
w_delta = w + f * voice->mod[i].delta * (float)sample_count;
w_delta *= w0;
w *= w0;
w_delta = (w_delta - w) / (float)sample_count;
/* -FIX- condition to [0, 0.5)? */
i = y_voice_mod_index(sosc->amp_mod_src);
f = *(sosc->amp_mod_amt);
if (f > 0.0f)
level_a = 1.0f - f + f * voice->mod[i].value;
else
level_a = 1.0f + f * voice->mod[i].value;
level_a_delta = volume_cv_to_amplitude(level_a + f * voice->mod[i].delta * (float)sample_count);
level_a = volume_cv_to_amplitude(level_a);
level_a /= 32767.0f;
level_a_delta /= 32767.0f;
level_b = level_a * *(sosc->level_b);
level_b_delta = level_a_delta * *(sosc->level_b);
level_a *= *(sosc->level_a);
level_a_delta *= *(sosc->level_a);
level_a_delta = (level_a_delta - level_a) / (float)sample_count;
level_b_delta = (level_b_delta - level_b) / (float)sample_count;
/* -FIX- condition to [0, 1]? */
if (sosc->sampleset && sosc->sampleset->set_up) {
i = voice->key + lrintf(*(sosc->pitch));
if (vosc->mode != vosc->last_mode ||
vosc->waveform != vosc->last_waveform ||
i != vosc->wave_select_key) {
/* get sample indices and crossfade from sampleset */
sample_select(sosc, vosc, i);
vosc->last_waveform = vosc->waveform;
/* try to avoid reseting pos0 except when necessary to avoid causing clocks in mono
* mode with portamento -- but basically it's going to click if it's not the same
* sample.... */
if (vosc->mode != vosc->last_mode) {
vosc->last_mode = vosc->mode;
if (sosc->sampleset->sample[vosc->i0])
vosc->pos0 = vosc->pos1 = (double)random_float(0.0f,
(float)sosc->sampleset->sample[vosc->i0]->length);
else
vosc->pos0 = vosc->pos1 = 0.0;
}
}
if (sosc->sampleset->sample[vosc->i0] &&
sosc->sampleset->sample[vosc->i1])
ready = 1;
else
ready = 0;
} else {
if (vosc->mode != vosc->last_mode) {
vosc->last_mode = vosc->mode;
vosc->pos0 = vosc->pos1 = 0.0;
}
vosc->last_waveform = -1;
ready = 0;
}
if (!ready) {
/* sampleset not ready, render a sine instead */
float pos = (float)vosc->pos0;
if (pos > 1.0f) pos = 0.0f;
level_a *= 16383.5f; /* scale for sine_wave (float) instead of sample->data (16-bit fixed) */
level_a_delta *= 16383.5f;
level_b *= 16383.5f;
level_b_delta *= 16383.5f;
for (sample = 0; sample < sample_count; sample++) {
pos += w;
if (pos >= 1.0f) pos -= 1.0f;
f = pos * (float)SINETABLE_POINTS;
i = lrintf(f - 0.5f);
f -= (float)i;
f = sine_wave[i + 4] + (sine_wave[i + 5] - sine_wave[i + 4]) * f;
voice->osc_bus_a[index] += level_a * f;
voice->osc_bus_b[index++] += level_b * f;
w += w_delta;
level_a += level_a_delta;
level_b += level_b_delta;
}
vosc->pos0 = (double)pos;
return;
}
if (sosc->sampleset->param3 & 1) { /* mono */
if (vosc->i0 == vosc->i1) { /* no crossfade */
/* mono without crossfade */
y_sample_t *s = (y_sample_t *)sosc->sampleset->sample[vosc->i0];
signed short *data = s->data;
double pos = vosc->pos0;
double length = (double)s->length;
float period = s->period;
if (pos >= length) pos = 0.0;
for (sample = 0; sample < sample_count; sample++) {
i = lrint(pos - 0.5);
f = (float)(pos - (double)i);
f = bspline_interp(f, (float)data[i - 1], (float)data[i],
(float)data[i + 1], (float)data[i + 2]);
voice->osc_bus_a[index] += level_a * f;
voice->osc_bus_b[index++] += level_b * f;
w += w_delta;
level_a += level_a_delta;
level_b += level_b_delta;
pos += w * period;
if (pos >= length) pos -= length;
/* sampleset oscillators do not export sync */
}
vosc->pos0 = pos;
} else {
/* mono with crossfade */
y_sample_t *s0 = (y_sample_t *)sosc->sampleset->sample[vosc->i0],
*s1 = (y_sample_t *)sosc->sampleset->sample[vosc->i1];
signed short *data0 = s0->data,
*data1 = s1->data;
double pos0 = vosc->pos0,
pos1 = vosc->pos1;
double length0 = (double)s0->length,
length1 = (double)s1->length;
float period0 = s0->period,
period1 = s1->period;
float a,
wavemix0 = vosc->wavemix0,
wavemix1 = vosc->wavemix1;
if (pos0 >= length0) pos0 = 0.0;
if (pos1 >= length1) pos1 = 0.0;
for (sample = 0; sample < sample_count; sample++) {
i = lrint(pos0 - 0.5);
f = (float)(pos0 - (double)i);
a = bspline_interp(f, (float)data0[i - 1], (float)data0[i],
(float)data0[i + 1], (float)data0[i + 2]) * wavemix0;
i = lrint(pos1 - 0.5);
f = (float)(pos1 - (double)i);
a += bspline_interp(f, (float)data1[i - 1], (float)data1[i],
(float)data1[i + 1], (float)data1[i + 2]) * wavemix1;
voice->osc_bus_a[index] += level_a * a;
voice->osc_bus_b[index++] += level_b * a;
w += w_delta;
level_a += level_a_delta;
level_b += level_b_delta;
pos0 += w * period0;
pos1 += w * period1;
if (pos0 >= length0) pos0 -= length0;
if (pos1 >= length1) pos1 -= length1;
/* sampleset oscillators do not export sync */
}
vosc->pos0 = pos0;
vosc->pos1 = pos1;
}
} else {
if (vosc->i0 == vosc->i1) {
/* stereo without crossfade */
y_sample_t *s = (y_sample_t *)sosc->sampleset->sample[vosc->i0];
signed short *data = s->data;
double posl = vosc->pos0,
posr,
length = (double)s->length;
float period = s->period;
if (posl >= length) posl = 0.0;
/* delay the right channel by about one-half the table length, but make
* it an multiple of the period length to minimize phase cancellation
* when summed to mono */
posr = posl + rint(length / 2.0 / (double)period) * (double)period;
if (posr >= length) posr -= length;
for (sample = 0; sample < sample_count; sample++) {
i = lrint(posl - 0.5);
f = (float)(posl - (double)i);
f = bspline_interp(f, (float)data[i - 1], (float)data[i],
(float)data[i + 1], (float)data[i + 2]);
voice->osc_bus_a[index] += level_a * f;
i = lrint(posr - 0.5);
f = (float)(posr - (double)i);
f = bspline_interp(f, (float)data[i - 1], (float)data[i],
(float)data[i + 1], (float)data[i + 2]);
voice->osc_bus_b[index++] += level_b * f;
w += w_delta;
level_a += level_a_delta;
level_b += level_b_delta;
posl += w * period;
if (posl >= length) posl -= length;
posr += w * period;
if (posr >= length) posr -= length;
/* sampleset oscillators do not export sync */
}
vosc->pos0 = posl;
} else {
/* stereo with crossfade */
y_sample_t *s0 = (y_sample_t *)sosc->sampleset->sample[vosc->i0],
*s1 = (y_sample_t *)sosc->sampleset->sample[vosc->i1];
signed short *data0 = s0->data,
*data1 = s1->data;
double posl0 = vosc->pos0,
posl1 = vosc->pos1,
posr0, posr1;
double length0 = (double)s0->length,
length1 = (double)s1->length;
float period0 = s0->period,
period1 = s1->period;
float a,
wavemix0 = vosc->wavemix0,
wavemix1 = vosc->wavemix1;
if (posl0 >= length0) posl0 = 0.0;
if (posl1 >= length1) posl1 = 0.0;
posr0 = posl0 + rint(length0 / 2.0 / (double)period0) * (double)period0;
posr1 = posl1 + rint(length1 / 2.0 / (double)period1) * (double)period1;
if (posr0 >= length0) posr0 -= length0;
if (posr1 >= length1) posr1 -= length1;
for (sample = 0; sample < sample_count; sample++) {
i = lrint(posl0 - 0.5);
f = (float)(posl0 - (double)i);
a = bspline_interp(f, (float)data0[i - 1], (float)data0[i],
(float)data0[i + 1], (float)data0[i + 2]) * wavemix0;
i = lrint(posl1 - 0.5);
f = (float)(posl1 - (double)i);
a += bspline_interp(f, (float)data1[i - 1], (float)data1[i],
(float)data1[i + 1], (float)data1[i + 2]) * wavemix1;
voice->osc_bus_a[index] += level_a * a;
i = lrint(posr0 - 0.5);
f = (float)(posr0 - (double)i);
a = bspline_interp(f, (float)data0[i - 1], (float)data0[i],
(float)data0[i + 1], (float)data0[i + 2]) * wavemix0;
i = lrint(posr1 - 0.5);
f = (float)(posr1 - (double)i);
a += bspline_interp(f, (float)data1[i - 1], (float)data1[i],
(float)data1[i + 1], (float)data1[i + 2]) * wavemix1;
voice->osc_bus_b[index++] += level_b * a;
w += w_delta;
level_a += level_a_delta;
level_b += level_b_delta;
posl0 += w * period0;
posr0 += w * period0;
posl1 += w * period1;
posr1 += w * period1;
if (posl0 >= length0) posl0 -= length0;
if (posr0 >= length0) posr0 -= length0;
if (posl1 >= length1) posl1 -= length1;
if (posr1 >= length1) posr1 -= length1;
/* sampleset oscillators do not export sync */
}
vosc->pos0 = posl0;
vosc->pos1 = posl1;
}
}
}
random_generator(int count) : _count(count), _values(new float [count])
{
for (int i = 0; i < count; ++i)
_values[i] = random_float();
}
GDoubleTerminal::GDoubleTerminal( const GDoubleTerminalDef& termdef ) :
GTerminal( termdef )
{
_value = termdef._minimum + (termdef._maximum - termdef._minimum) * random_float(1.0);
}
int main() {
srand(time(0));
for (int i = 0; i < 3; i++)
gColor[i] = random_float();
signal(SIGINT, signal_handler);
SDL_Init(SDL_INIT_VIDEO);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 2);
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
/* Create our window centered at 512x512 resolution */
gWindow = SDL_CreateWindow("Hello Triangle",
SDL_WINDOWPOS_CENTERED,
SDL_WINDOWPOS_CENTERED,
800,
600,
SDL_WINDOW_OPENGL | SDL_WINDOW_SHOWN);
SDL_GL_CreateContext(gWindow);
SDL_GL_SetSwapInterval(1);
/* create a black box context */
if (!bbgl_init(&bbgl)) {
fprintf(stderr, "[bbgl] (client) failed to connect to black box\n");
return -1;
}
glViewport(0, 0, 800, 600);
glClearColor(0.0f, 0.0f, 1.0f, 1.0f);
//const char *vendor = (const char *)glGetString(GL_VENDOR);
//const char *renderer = (const char *)glGetString(GL_RENDERER);
//const char *version = (const char *)glGetString(GL_VERSION);
//const char *shading = (const char *)glGetString(GL_SHADING_LANGUAGE_VERSION);
//printf("vendor: %s\n", vendor);
//printf("renderer: %s\n", renderer);
//printf("version: %s\n", version);
//printf("shading: %s\n", shading);
create_vertex_array();
create_vertex_buffer();
compile_shaders();
int frames = 0;
Uint32 start = SDL_GetTicks();
int dirs[3] = { +1, +1, +1 };
while (gRunning) {
++frames;
Uint32 elapsed = SDL_GetTicks() - start;
if (elapsed) {
double seconds = elapsed / 1000.0;
double fps = frames / seconds;
printf("\r%g FPS\n", fps);
}
SDL_Event e;
while (SDL_PollEvent(&e)) {
switch (e.type) {
case SDL_QUIT:
gRunning = 0;
break;
}
}
render();
for (int i = 0; i < 3; i++) {
int value = ((int)(gColor[i] * 255.0f)+dirs[i]);
if (value > 255 || value <= 0)
dirs[i] = -dirs[i];
gColor[i] = value/255.0f;
}
}
bbgl_destroy(&bbgl);
return 0;
}
void
piglit_init(int argc, char **argv)
{
unsigned r;
unsigned c;
unsigned i;
(void) argc;
(void) argv;
piglit_require_vertex_program();
piglit_require_fragment_program();
piglit_require_extension("GL_NV_fragment_program_option");
piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
vert_prog = piglit_compile_program(GL_VERTEX_PROGRAM_ARB,
vert_shader_source);
frag_prog = piglit_compile_program(GL_FRAGMENT_PROGRAM_ARB,
frag_shader_source);
glClearColor(0.5, 0.5, 0.5, 1.0);
i = 0;
for (r = 0; r < TEST_ROWS; r++) {
for (c = 0; c < TEST_COLS; c++) {
position[i + 0] = (float)((BOX_SIZE / 2) + c *
(BOX_SIZE + 1) + 1);
position[i + 1] = (float)((BOX_SIZE / 2) + r *
(BOX_SIZE + 1) + 1);
position[i + 2] = 0.0f;
position[i + 3] = 1.0f;
i += 4;
}
}
/* Generate a bunch of random direction vectors. Based on the random
* direction vector, generate an axis such that the reflection of the
* random vector across the axis is { 0, 1, 0 }.
*/
srand(time(NULL));
for (i = 0; i < (ARRAY_SIZE(direction) / 4); i++) {
const double d[3] = {
random_float(),
random_float(),
random_float()
};
const double inv_mag_d = 1.0 /
sqrt((d[0] * d[0]) + (d[1] * d[1]) + (d[2] * d[2]));
double a[3];
double mag_a;
direction[(i * 4) + 0] = d[0] * inv_mag_d;
direction[(i * 4) + 1] = d[1] * inv_mag_d;
direction[(i * 4) + 2] = d[2] * inv_mag_d;
direction[(i * 4) + 3] = 0.0;
a[0] = direction[(i * 4) + 0] + 0.0;
a[1] = direction[(i * 4) + 1] + 1.0;
a[2] = direction[(i * 4) + 2] + 0.0;
mag_a = sqrt((a[0] * a[0]) + (a[1] * a[1]) + (a[2] * a[2]));
axis[(i * 4) + 0] = a[0] / mag_a;
axis[(i * 4) + 1] = a[1] / mag_a;
axis[(i * 4) + 2] = a[2] / mag_a;
axis[(i * 4) + 3] = 0.0;
}
}
int main()
{
sf::RenderWindow window(sf::VideoMode(2000, 1200), "Do not pop the balloons!");
std::vector<MyCircle> shapes;
int active_circles = NUMCIRCLES;
auto size = window.getSize();
for (int i=0; i < NUMCIRCLES; ++i) {
MyCircle shape(&window);
shape.setRadius(random_float(0.66*CIRCLERADIUS, 1.33*CIRCLERADIUS));
shape.setPosition(random_float(0, shape.x_max), random_float(0, shape.y_max));
shape.setFillColor(colours[random_int(0, colours.size()-1)]);
//shape.setFillColor(sf::Color::Black);
shape.setDirection(random_direction(), random_direction());
shape.setSpeed(random_float(0, XSPEED), random_float(0, YSPEED));
shapes.push_back(shape);
}
while (window.isOpen())
{
sf::Event event;
while (window.pollEvent(event))
{
if (event.type == sf::Event::Closed)
window.close();
}
window.clear(sf::Color::Yellow);
for (int i=0; i < NUMCIRCLES; ++i) {
auto pos = shapes[i].getPosition();
auto rad = shapes[i].getRadius();
auto x = pos.x;
auto y = pos.y;
//Get mouse click
if (sf::Mouse::isButtonPressed(sf::Mouse::Left)) {
auto mouse_pos = sf::Mouse::getPosition(window);
if (mouse_pos.x > x && mouse_pos.x < x + 2*rad &&
mouse_pos.y > y && mouse_pos.y < y + 2*rad) {
shapes[i].setFillColor(sf::Color::Transparent);
shapes[i].setRadius(0.f);
shapes[i].setSpeed(0.f, 0.f);
active_circles -= 1;
if (active_circles == 0) window.close();
}
}
// From here is the code to make the ball bounce left to right
if (x >= shapes[i].x_max) {
shapes[i].x_direction = -1;
}
if (x <= 0) {
shapes[i].x_direction = 1;
}
x += shapes[i].x_speed * shapes[i].x_direction;
// End
// Copy the above code, but swap Y for X to make the ball bounce up and down
if (y >= shapes[i].y_max) {
shapes[i].y_direction = -1;
}
if (y <= 0) {
shapes[i].y_direction = 1;
}
y += shapes[i].y_speed * shapes[i].y_direction;
shapes[i].setPosition(x, y);
window.draw(shapes[i]);
}
window.display();
}
return 0;
}
Bird::Bird(World world, float maxV, float minsize, float maxsize) {
Vector pos = Vector();
Vector vel = Vector();
id = -1;
species = -1;
predator = false;
this->mass = random_float(minsize, maxsize);
// float px = (float)(rrand((500<<4)) -(500<<3));
// float py = (float)(rrand((450<<4)) -(450<<3));
// float pz = (float)(rrand(200) + 500);
//
// while(px < 0) px += world.x;
// while(py < 0) py += world.y;
// while(pz < 0) pz += world.z;
//
// while(px > world.x) px -= world.x;
// while(py > world.y) py -= world.y;
// while(pz > world.z) pz -= world.z;
//
// pos.setX(px);
// pos.setY(py);
// pos.setZ(pz);
pos.setX((float)random_int(50, world.x - 50));
pos.setY((float)random_int( world.y/3, world.y/2));
//pos.setY(world.y / 2);
pos.setZ((float)random_int(50, world.z - 50));
this->pos = pos;
// float vx = (float)(rrand(51) - 25);
// float vy = (float)(rrand(51) - 25);
// float vz = (float)(rrand(51) - 25);
//
// vel.setX(vx);
// vel.setY(vy);
// vel.setZ(vz);
vel.setX(random_int(-maxV, maxV));
vel.setY(0);
vel.setZ(random_int(-maxV, maxV));
this->vel = vel;
this->maxV = maxV;
maxA = 0;
sight_distance = 0;
min_separation = 0;
alignment_radius = 0;
species_avoidance_radius = 0;
predator_avoidance_radius = 0;
coef_cohesion = 0;
coef_separation = 0;
coef_alignment = 0;
coef_avoidance = 0;
wander_radius = 0;
wander_distance = 0;
vertical_sight_angle = 0;
horizontal_sight_angle = 0;
max_turn = 0;
}
// Copyright 2015 Adobe Systems Incorporated
// All Rights Reserved.
Var x, y, c;
ImageParam ip(type_of<uint8_t>(), 3, "image 1");
Param<float> red("red channel multiplier", 1.0f, 0.0f, 2.0f);
Param<float> green("green channel multiplier", 1.0f, 0.0f, 2.0f);
Param<float> blue("blue channel multiplier", 1.0f, 0.0f, 2.0f);
Param<float> noise("noise amount", 0.0f, 0.0f, 1.0f);
Param<bool> invert("invert", false);
Expr noiseVal = noise * (random_float() - 0.5) * 255;
Expr input = select(invert, 255 - ip(x, y, c), ip(x, y, c));
result(x, y, c) = cast<int8_t>(
clamp( select(
c == 0, input * red,
c == 1, input * green,
c == 2, input * blue,
0) + noiseVal, 0, 255)
);
result.vectorize(x, 8).parallel(y, 4);
