void Ripple3D::update(float time)
{
int i, j;
for (i = 0; i < (_gridSize.width+1); ++i)
{
for (j = 0; j < (_gridSize.height+1); ++j)
{
Vec3 v = getOriginalVertex(Vec2(i, j));
Vec2 vect = _position - Vec2(v.x,v.y);
float r = vect.getLength();
if (r < _radius)
{
r = _radius - r;
float rate = powf(r / _radius, 2);
v.z += (sinf( time*(float)M_PI * _waves * 2 + r * 0.1f) * _amplitude * _amplitudeRate * rate);
}
setVertex(Vec2(i, j), v);
}
}
}
void Waves::update(float time)
{
int i, j;
for (i = 0; i < _gridSize.width + 1; ++i)
{
for (j = 0; j < _gridSize.height + 1; ++j)
{
Vec3 v = getOriginalVertex(Vec2(i, j));
if (_vertical)
{
v.x = (v.x + (sinf(time * (float)M_PI * _waves * 2 + v.y * .01f) * _amplitude * _amplitudeRate));
}
if (_horizontal)
{
v.y = (v.y + (sinf(time * (float)M_PI * _waves * 2 + v.x * .01f) * _amplitude * _amplitudeRate));
}
setVertex(Vec2(i, j), v);
}
}
}
/*
* Update each tick
* Time is the percentage of the way through the duration
*/
void PageTurn3D::update(float time)
{
float tt = MAX(0, time - 0.25f);
float deltaAy = (tt * tt * 500);
float ay = -100 - deltaAy;
float deltaTheta = sqrtf(time);
float theta = deltaTheta>0.5?(float)M_PI_2*deltaTheta:(float)M_PI_2*(1-deltaTheta);
float rotateByYAxis = (2-time)* M_PI;
float sinTheta = sinf(theta);
float cosTheta = cosf(theta);
for (int i = 0; i <= _gridSize.width; ++i)
{
for (int j = 0; j <= _gridSize.height; ++j)
{
// Get original vertex
Vec3 p = getOriginalVertex(Vec2(i ,j));
p.x -= getGridRect().origin.x;
float R = sqrtf((p.x * p.x) + ((p.y - ay) * (p.y - ay)));
float r = R * sinTheta;
float alpha = asinf( p.x / R );
float beta = alpha / sinTheta;
float cosBeta = cosf( beta );
// If beta > PI then we've wrapped around the cone
// Reduce the radius to stop these points interfering with others
if (beta <= M_PI)
{
p.x = ( r * sinf(beta));
}
else
{
// Force X = 0 to stop wrapped
// points
p.x = 0;
}
p.y = ( R + ay - ( r * (1 - cosBeta) * sinTheta));
// We scale z here to avoid the animation being
// too much bigger than the screen due to perspective transform
p.z = (r * ( 1 - cosBeta ) * cosTheta);// "100" didn't work for
p.x = p.z * sinf(rotateByYAxis) + p.x * cosf(rotateByYAxis);
p.z = p.z * cosf(rotateByYAxis) - p.x * sinf(rotateByYAxis);
p.z/=7;
// Stop z coord from dropping beneath underlying page in a transition
// issue #751
if( p.z < 0.5f )
{
p.z = 0.5f;
}
// Set new coords
p.x += getGridRect().origin.x;
setVertex(Vec2(i, j), p);
}
}
}
void FlipY3D::update(float time)
{
float angle = (float)M_PI * time; // 180 degrees
float mz = sinf( angle );
angle = angle / 2.0f; // x calculates degrees from 0 to 90
float my = cosf(angle);
Vec3 v0, v1, v, diff;
v0 = getOriginalVertex(Vec2(1, 1));
v1 = getOriginalVertex(Vec2(0, 0));
float y0 = v0.y;
float y1 = v1.y;
float y;
Vec2 a, b, c, d;
if (y0 > y1)
{
// Normal Grid
a = Vec2(0,0);
b = Vec2(0,1);
c = Vec2(1,0);
d = Vec2(1,1);
y = y0;
}
else
{
// Reversed Grid
b = Vec2(0,0);
a = Vec2(0,1);
d = Vec2(1,0);
c = Vec2(1,1);
y = y1;
}
diff.y = y - y * my;
diff.z = fabsf(floorf((y * mz) / 4.0f));
// bottom-left
v = getOriginalVertex(a);
v.y = diff.y;
v.z += diff.z;
setVertex(a, v);
// upper-left
v = getOriginalVertex(b);
v.y -= diff.y;
v.z -= diff.z;
setVertex(b, v);
// bottom-right
v = getOriginalVertex(c);
v.y = diff.y;
v.z += diff.z;
setVertex(c, v);
// upper-right
v = getOriginalVertex(d);
v.y -= diff.y;
v.z -= diff.z;
setVertex(d, v);
}
void FlipX3D::update(float time)
{
float angle = (float)M_PI * time; // 180 degrees
float mz = sinf(angle);
angle = angle / 2.0f; // x calculates degrees from 0 to 90
float mx = cosf(angle);
Vec3 v0, v1, v, diff;
v0 = getOriginalVertex(Vec2(1, 1));
v1 = getOriginalVertex(Vec2(0, 0));
float x0 = v0.x;
float x1 = v1.x;
float x;
Vec2 a, b, c, d;
if ( x0 > x1 )
{
// Normal Grid
a = Vec2(0,0);
b = Vec2(0,1);
c = Vec2(1,0);
d = Vec2(1,1);
x = x0;
}
else
{
// Reversed Grid
c = Vec2(0,0);
d = Vec2(0,1);
a = Vec2(1,0);
b = Vec2(1,1);
x = x1;
}
diff.x = ( x - x * mx );
diff.z = fabsf( floorf( (x * mz) / 4.0f ) );
// bottom-left
v = getOriginalVertex(a);
v.x = diff.x;
v.z += diff.z;
setVertex(a, v);
// upper-left
v = getOriginalVertex(b);
v.x = diff.x;
v.z += diff.z;
setVertex(b, v);
// bottom-right
v = getOriginalVertex(c);
v.x -= diff.x;
v.z -= diff.z;
setVertex(c, v);
// upper-right
v = getOriginalVertex(d);
v.x -= diff.x;
v.z -= diff.z;
setVertex(d, v);
}
// Overrides
void CFlip3DYEx::update(float time)
{
// float angle = (float)M_PI * time; // 180 degrees
float angle = m_from + (m_from - m_to) * time;
float mz = sinf( angle );
angle = angle / 2.0f; // x calculates degrees from 0 to 90
float my = cosf(angle);
Vertex3F v0, v1, v, diff;
v0 = getOriginalVertex(Point(1, 1));
v1 = getOriginalVertex(Point(0, 0));
float y0 = v0.y;
float y1 = v1.y;
float y;
Point a, b, c, d;
if (y0 > y1)
{
// Normal Grid
a = Point(0,0);
b = Point(0,1);
c = Point(1,0);
d = Point(1,1);
y = y0;
}
else
{
// Reversed Grid
b = Point(0,0);
a = Point(0,1);
d = Point(1,0);
c = Point(1,1);
y = y1;
}
diff.y = y - y * my;
diff.z = fabsf(floorf((y * mz) / 4.0f));
// bottom-left
v = getOriginalVertex(a);
// v.y = diff.y;
v.z += 0;//diff.z;
setVertex(a, v);
// upper-left
v = getOriginalVertex(b);
v.y -= 2 * diff.y;
v.z -= 2* diff.z;
setVertex(b, v);
// bottom-right
v = getOriginalVertex(c);
// v.y = diff.y;
v.z += 0;//diff.z;
setVertex(c, v);
// upper-right
v = getOriginalVertex(d);
v.y -= 2 * diff.y;
v.z -= 2 * diff.z;
setVertex(d, v);
}
