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improve flip some more. 

SVN revision: 59573
This commit is contained in:
Carsten Haitzler 2011-05-22 04:02:17 +00:00
parent cf6d98a064
commit 4b708d9155
1 changed files with 54 additions and 16 deletions
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70
legacy/elementary/src/bin/test_flip_page.c
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@ -162,6 +162,14 @@ _deform_point(Vertex2 *vi, Vertex3 *vo, double rho, double theta, double A)
vo->z = (v1.x * sin(rho)) + (v1.z * cos(rho));
}
static void
_interp_point(Vertex3 *vi1, Vertex3 *vi2, Vertex3 *vo, double v)
{
vo->x = (v * vi2->x) + ((1.0 - v) * vi1->x);
vo->y = (v * vi2->y) + ((1.0 - v) * vi1->y);
vo->z = (v * vi2->z) + ((1.0 - v) * vi1->z);
}
static int
_slice_update(State *st)
{
@ -197,11 +205,11 @@ _slice_update(State *st)
#if 1
// MAGIC MATH STUFF!!!
{
double b = (h / 2), minv = 0.0;
double b = (h / 2), minv = 0.0, minva;
double mgrad = (double)(y1 - y2) / (double)(x1 - x2);
Evas_Coord slx1, slx2, sly;
int gx, gy, gsz, gw, gh;
double rho, A, theta, perc, percm, n, cd;
double rho, A, theta, perc, percm, n, cd, rhol, Al, thetal;
if (mx < 1) mx = 1; // quick hack to keep curl line visible
@ -247,33 +255,43 @@ _slice_update(State *st)
else if (perc > 1.0) perc = 1.0;
if (percm < 0.0) percm = 0.0;
else if (percm > 1.0) percm = 1.0;
minva = atan(minv) / (M_PI / 2);
if (minva < 0.0) minva = -minva;
// A = apex of cone
if (b <= 0) A = b;
else A = h - b;
if (A < -(h * 20)) A = -h * 20;
//--//
Al = -5;
// rho = is how much the page is turned
n = 1.0 - perc;
n = 1.0 - cos(n * M_PI / 2.0);
n = n * n * n;
n = n * n;
rho = -(n * M_PI);
//--//
rhol = -(n * M_PI);
// theta == curliness (how much page culrs in on itself
n = sin(perc * M_PI);
// cd = (double)dy / (double)h;
// if (cd < 0.0) cd = -cd;
// cd *= 1.0;
cd = 0.0;
n = (n * 1.2) + (cd * 1.6);
if (n > 2.0) n = 2.0;
n = sin((1.0 - perc) * M_PI);
n = n * 1.2;
theta = 7.86 + n;
if (b <= 0) A = b;
else A = h - b;
//--//
n = sin((1.0 - perc) * M_PI);
n = 1.0 - n;
n = n * n;
n = 1.0 - n;
thetal = 7.86 + n;
gsz = 16;
for (gx = 0; gx < w; gx += gsz)
{
for (gy = 0; gy < h; gy += gsz)
{
Vertex2 vi[4];
Vertex3 vo[4];
Vertex2 vi[4], vil[2];
Vertex3 vo[4], vol[2];
gw = gsz;
gh = gsz;
if ((gx + gw) > w) gw = w - gx;
@ -283,8 +301,28 @@ _slice_update(State *st)
vi[1].x = gx + gw; vi[1].y = gy;
vi[2].x = gx + gw; vi[2].y = gy + gh;
vi[3].x = gx; vi[3].y = gy + gh;
vil[0].x = gx; vil[0].y = h - gx;
vil[1].x = gx + gw; vil[1].y = h - (gx + gw);
for (i = 0; i < 2; i++)
{
_deform_point(&(vil[i]), &(vol[i]), rhol, thetal, Al);
}
for (i = 0; i < 4; i++)
_deform_point(&(vi[i]), &(vo[i]), rho, theta, A);
{
_deform_point(&(vi[i]), &(vo[i]), rho, theta, A);
}
n = minva * sin(perc * M_PI);
n = n * n;
vol[0].y = gy;
vol[1].y = gy;
_interp_point(&(vo[0]), &(vol[0]), &(vo[0]), n);
_interp_point(&(vo[1]), &(vol[1]), &(vo[1]), n);
vol[0].y = gy + gh;
vol[1].y = gy + gh;
_interp_point(&(vo[2]), &(vol[1]), &(vo[2]), n);
_interp_point(&(vo[3]), &(vol[0]), &(vo[3]), n);
if (b > 0)
{
Vertex3 vt;