===== Primitive: Elliptic cone with x-axis =====

**Definition**: <m>(x-x_0)^2-(y-y_0)^2/a^2-(z-z_0)^2/b^2</m>

**Call**: hfEllConeX(x,center,a,b);

**Parameters**:

x - point coordinates array

center - cone apex array

a,b - elliptic half-axes along y, z at the distance 1 along x

**Test file**: [[http://hyperfun.org/ellcone.hf|ellcone.hf]]

===== Primitive: Elliptic cone with y-axis =====

**Definition**: <m>(y-y_0)^2-(x-x_0)^2/a^2-(z-z_0)^2/b^2</m>

**Call**: hfEllConeY(x,center,a,b);

**Parameters**:

x - point coordinates array

center - cone apex array

a,b - elliptic half-axes along x, z at the distance 1 along y

**Test file**: [[http://hyperfun.org/ellcone.hf|ellcone.hf]]

===== Primitive: Elliptic cone with z-axis =====

**Definition**: <m>(z-z_0)^2-(x-x_0)^2/a^2-(y-y_0)^2/b^2</m>

**Call**: hfEllConeZ(x,center,a,b);

**Parameters**:

x - point coordinates array

center - cone apex array

a,b - elliptic half-axes along x, y at the distance 1 along z

**Test file**: [[http://hyperfun.org/ellcone.hf|ellcone.hf]]