Mesh itemDamage(float damageValue)
{
damageValue = limit<float>(damageValue, 0, 1);
if(damageValue == 0)
return Mesh();
TextureDescriptor backgroundTexture = TextureAtlas::DamageBarGray.td();
TextureDescriptor foregroundTexture = TextureAtlas::DamageBarGreen.td();
if(damageValue > 1.0f / 3)
{
foregroundTexture = TextureAtlas::DamageBarYellow.td();
}
if(damageValue > 2.0f / 3)
{
foregroundTexture = TextureAtlas::DamageBarRed.td();
}
const float minX = 2 / 16.0f;
const float maxX = 14 / 16.0f;
float splitX = interpolate(damageValue, maxX, minX);
const float minY = 2 / 16.0f;
const float maxY = 4 / 16.0f;
constexpr ColorF c = colorizeIdentity();
const VectorF nxny = VectorF(minX, minY, 0);
VectorF cxny = VectorF(splitX, minY, 0);
const VectorF pxny = VectorF(maxX, minY, 0);
const VectorF nxpy = VectorF(minX, maxY, 0);
VectorF cxpy = VectorF(splitX, maxY, 0);
const VectorF pxpy = VectorF(maxX, maxY, 0);
Mesh retval = quadrilateral(foregroundTexture,
nxny, c,
cxny, c,
cxpy, c,
nxpy, c);
retval.append(quadrilateral(backgroundTexture,
cxny, c,
pxny, c,
pxpy, c,
cxpy, c));
return retval;
}
/* find intersection of lines v0 to v1 and v2 to v3*/
static int
patch(vec2 v0, vec2 v1, vec2 v2, vec2 v3)
{
vec1 denom;
vec1 mu;
vec2 v4;
denom = (v1.x-v0.x)*(v3.y-v2.y) - (v1.y-v0.y)*(v3.x-v2.x);
if(fabs(denom) > epsilon) {
mu = ((v2.x-v0.x)*(v3.y-v2.y) - (v2.y-v0.y)*(v3.x-v2.x))/denom;
/* if intersection between lines v0 to v1 and v2 to v3,
* call it v4 and form triangles v0,v2,v4 and v1,v3,v4
*/
if(mu >= 0 && mu <= 1) {
v4.x = (1-mu)*v0.x + mu*v1.x;
v4.y = (1-mu)*v0.y + mu*v1.y;
triangle(v0, v2, v4);
triangle(v1, v3, v4);
return 0;
}
}
/* else find intersection of lines v0 to v2 and v1 to v3*/
denom = (v2.x-v0.x)*(v3.y-v1.y) - (v2.y-v0.y)*(v3.x-v1.x);
if(fabs(denom) > epsilon) {
mu = ((v1.x-v0.x)*(v3.y-v1.y) - (v1.y-v0.y)*(v3.x-v1.x))/denom;
/* if intersection between v0 and v1, call it v4
* and form triangles v0,v1,v4 and v2,v3,v4
*/
if(mu >= 0 && mu <= 1) {
v4.x = (1-mu)*v0.x + mu*v2.x;
v4.y = (1-mu)*v0.y + mu*v2.y;
triangle(v0, v1, v4);
triangle(v2, v3, v4);
return 0;
}
}
/* there are no proper intersections so form quadrilateral v0,v1,v3,v2*/
quadrilateral(v0, v1, v3, v2);
return 1;
}
static gboolean intersection2(t_env *rt, t_vector ray, t_vector origin,
int i)
{
if ((rt->object[i].name == L_SPHERE && limited_sphere(ray,
rt->object[i], origin, rt)) ||
(rt->object[i].name == L_CYLINDER && limited_cylinder(ray,
rt->object[i], origin, rt)) ||
(rt->object[i].name == L_CONE && limited_cone(ray, rt->object[i]
, origin, rt)) ||
(rt->object[i].name == TRIANGLE && triangle(ray, rt->object[i],
&rt->t, origin)) ||
(rt->object[i].name == TORUS && torus(ray, rt->object[i], &rt->t
, origin)) ||
(rt->object[i].name == ELLIPSOIDE && ellipsoide(ray, rt->object[i],
&rt->t, origin)) ||
(rt->object[i].name == PARABOL && parabol(ray, rt->object[i],
&rt->t, origin)) ||
(rt->object[i].name == QUADRILATERAL && quadrilateral(ray,
rt->object[i], &rt->t, origin)) ||
(rt->object[i].name == CUBE && cube(ray, &rt->object[i], &rt->t,
origin)))
return (1);
return (0);
}
