TEST(Transformable_objects, can_be_scaled)
{
Transformable t;
EXPECT_EQ(vec3(1,1,1), t.scaling());
t.scaleTo(vec3(2,3,4));
EXPECT_EQ(vec3(2,3,4), t.scaling());
t.scaleTo(-2,-5,-9);
EXPECT_EQ(vec3(-2,-5,-9), t.scaling());
t.scaleTo(2,3,4);
t.scale(4,2,3);
EXPECT_EQ(vec3(8,6,12), t.scaling());
t.scale(vec3(1.0f/4.0f, 1.0f/2.0f, 1.0f/3.0f));
EXPECT_EQ(vec3(2,3,4), t.scaling());
}
TEST(Transformable_objects, have_a_position_rotation_and_scaling)
{
Transformable t;
EXPECT_EQ(vec3(0,0,0), t.position());
EXPECT_EQ(vec3(1,1,1), t.scaling());
EXPECT_EQ(quat(0,0,0,1), t.rotation());
}
// SetTransformation
void
ChannelTransform::SetTransformation(const Transformable& other)
{
// calc affine parameters
// translation
double tx;
double ty;
other.translation(&tx, &ty);
// rotation
double rotation = agg::rad2deg(other.rotation());
// scale
double scaleX;
double scaleY;
other.scaling(&scaleX, &scaleY);
if (isnanf(tx) || isnanf(ty) || isnanf(scaleX) || isnanf(scaleY))
return;
SetTransformation(B_ORIGIN, BPoint(tx, ty), rotation, scaleX, scaleY);
}