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Added in API level 1
Summary: Ctors | Methods | Inherited Methods | [Expand All]

GLU

public class GLU
extends Object

java.lang.Object
   ↳ android.opengl.GLU

一系列GL实用程序受OpenGL Utility Toolkit的启发。

Summary

Public constructors
GLU()

Public methods
static String gluErrorString(int error)

从GL或GLU错误代码中返回错误字符串。
static void gluLookAt(GL10 gl, float eyeX, float eyeY, float eyeZ, float centerX, float centerY, float centerZ, float upX, float upY, float upZ)

根据视点，视角和向上方向定义视图变换。
static void gluOrtho2D(GL10 gl, float left, float right, float bottom, float top)

建立二维正交投影矩阵
static void gluPerspective(GL10 gl, float fovy, float aspect, float zNear, float zFar)

建立一个透视投影矩阵
static int gluProject(float objX, float objY, float objZ, float[] model, int modelOffset, float[] project, int projectOffset, int[] view, int viewOffset, float[] win, int winOffset)

将对象坐标映射到窗口坐标。
static int gluUnProject(float winX, float winY, float winZ, float[] model, int modelOffset, float[] project, int projectOffset, int[] view, int viewOffset, float[] obj, int objOffset)

将窗口坐标映射到对象坐标。

Inherited methods
From class java.lang.Object

Public constructors

GLU

Added in API level 1 
GLU ()

Public methods

gluErrorString

Added in API level 1 
String gluErrorString (int error)

从GL或GLU错误代码中返回错误字符串。

Parameters
error int: - a GL or GLU error code.
Returns
String the error string for the input error code, or NULL if the input was not a valid GL or GLU error code.

gluLookAt

Added in API level 1 
void gluLookAt (GL10 gl, 
                float eyeX, 
                float eyeY, 
                float eyeZ, 
                float centerX, 
                float centerY, 
                float centerZ, 
                float upX, 
                float upY, 
                float upZ)

根据视点，视角和向上方向定义视图变换。

Parameters
gl GL10: a GL10 interface
eyeX float: eye point X
eyeY float: eye point Y
eyeZ float: eye point Z
centerX float: center of view X
centerY float: center of view Y
centerZ float: center of view Z
upX float: up vector X
upY float: up vector Y
upZ float: up vector Z

gluOrtho2D

Added in API level 1 
void gluOrtho2D (GL10 gl, 
                float left, 
                float right, 
                float bottom, 
                float top)

建立二维正交投影矩阵

gluPerspective

Added in API level 1 
void gluPerspective (GL10 gl, 
                float fovy, 
                float aspect, 
                float zNear, 
                float zFar)

建立一个透视投影矩阵

Parameters
gl GL10: a GL10 interface
fovy float: specifies the field of view angle, in degrees, in the Y direction.
aspect float: specifies the aspect ration that determins the field of view in the x direction. The aspect ratio is the ratio of x (width) to y (height).
zNear float: specifies the distance from the viewer to the near clipping plane (always positive).
zFar float: specifies the distance from the viewer to the far clipping plane (always positive).

gluProject

Added in API level 1 
int gluProject (float objX, 
                float objY, 
                float objZ, 
                float[] model, 
                int modelOffset, 
                float[] project, 
                int projectOffset, 
                int[] view, 
                int viewOffset, 
                float[] win, 
                int winOffset)

将对象坐标映射到窗口坐标。 gluProject使用model，proj和view将指定的对象坐标转换为窗口坐标。 结果存储在win中。

请注意，您可以使用OES_matrix_get扩展（如果存在）来获取当前的模型视图和投影矩阵。

Parameters
objX float: object coordinates X
objY float: object coordinates Y
objZ float: object coordinates Z
model float: the current modelview matrix
modelOffset int: the offset into the model array where the modelview maxtrix data starts.
project float: the current projection matrix
projectOffset int: the offset into the project array where the project matrix data starts.
view int: the current view, {x, y, width, height}
viewOffset int: the offset into the view array where the view vector data starts.
win float: the output vector {winX, winY, winZ}, that returns the computed window coordinates.
winOffset int: the offset into the win array where the win vector data starts.
Returns
int A return value of GL_TRUE indicates success, a return value of GL_FALSE indicates failure.

gluUnProject

Added in API level 1 
int gluUnProject (float winX, 
                float winY, 
                float winZ, 
                float[] model, 
                int modelOffset, 
                float[] project, 
                int projectOffset, 
                int[] view, 
                int viewOffset, 
                float[] obj, 
                int objOffset)

将窗口坐标映射到对象坐标。 gluUnProject使用model，proj和view将指定的窗口坐标映射到对象坐标。 结果存储在obj中。

请注意，您可以使用OES_matrix_get扩展（如果存在）来获取当前的模型视图和投影矩阵。

Parameters
winX float: window coordinates X
winY float: window coordinates Y
winZ float: window coordinates Z
model float: the current modelview matrix
modelOffset int: the offset into the model array where the modelview maxtrix data starts.
project float: the current projection matrix
projectOffset int: the offset into the project array where the project matrix data starts.
view int: the current view, {x, y, width, height}
viewOffset int: the offset into the view array where the view vector data starts.
obj float: the output vector {objX, objY, objZ}, that returns the computed object coordinates.
objOffset int: the offset into the obj array where the obj vector data starts.
Returns
int A return value of GL10.GL_TRUE indicates success, a return value of GL10.GL_FALSE indicates failure.
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