Interpolates the orientation of an object toward a position. The pointTowards() method combines the functionality of the Matrix3D.pointAt() and Matrix3D.interpolateTo() methods.

The pointTowards() method allows for in-place modification to the orientation. It decomposes the Matrix3D of the display object and replaces the rotation elements by ones that make a percent turn toward the position of the target. The object can make an incremental turn toward the target while still moving in its own direction. The consecutive calls to the pointTowards() followed by a translation method can produce the animation of an object chasing or following a moving target. First point the object a percent point toward the target, then incrementally move the object along an axis.

See also

Interpolates the orientation of an object toward a position. The pointTowards() method combines the functionality of the Matrix3D.pointAt() and Matrix3D.interpolateTo() methods.

The pointTowards() method allows for in-place modification to the orientation. It decomposes the Matrix3D of the display object and replaces the rotation elements by ones that make a percent turn toward the position of the target. The object can make an incremental turn toward the target while still moving in its own direction. The consecutive calls to the pointTowards() followed by a translation method can produce the animation of an object chasing or following a moving target. First point the object a percent point toward the target, then incrementally move the object along an axis.

See also

Using a projection Matrix3D object, projects a Vector3D object from one space coordinate to another. The projectVector() method is like the Matrix3D.transformVector() method except that the projectVector() method divides the x, y, and z elements of the original Vector3D object by the projection depth value. The depth value is the distance from the eye to the Vector3D object in view or eye space. The default value for this distance is the value of the z element.

See also

Using a projection Matrix3D object, projects a Vector of three-dimensional space coordinates (verts) to a Vector of two-dimensional space coordinates (projectedVerts). The projected Vector object should be pre-allocated before it is used as a parameter.

The projectVectors() method also sets the t value of the uvt data. You should pre-allocate a Vector that can hold the uvts data for each projected Vector set of coordinates. Also specify the u and v values of the uvt data. The uvt data is a Vector of normalized coordinates used for texture mapping. In UV coordinates, (0,0) is the upper left of the bitmap, and (1,1) is the lower right of the bitmap.

This method can be used in conjunction with the Graphics.drawTriangles() method and the GraphicsTrianglePath class.

See also

Using a projection Matrix3D object, projects a Vector3D object from one space coordinate to another. The projectVector() method is like the Matrix3D.transformVector() method except that the projectVector() method divides the x, y, and z elements of the original Vector3D object by the projection depth value. The depth value is the distance from the eye to the Vector3D object in view or eye space. The default value for this distance is the value of the z element.

See also