camera()设置相机位置

Name

camera()设置相机位置

Examples

size(100, 100, P3D);

noFill();

background(204);

camera(70.0, 35.0, 120.0, 50.0, 50.0, 0.0,

0.0, 1.0, 0.0);

translate(50, 50, 0);

rotateX(-PI/6);

rotateY(PI/3);

box(45);

Description

Sets the position of the camera through setting the eye position, the center of the scene, and which axis is facing upward. Moving the eye position and the direction it is pointing (the center of the scene) allows the images to be seen from different angles. The version without any parameters sets the camera to the default position, pointing to the center of the display window with the Y axis as up. The default values are camera(width/2.0, height/2.0, (height/2.0) / tan(PI*30.0 / 180.0), width/2.0, height/2.0, 0, 0, 1, 0). This function is similar to gluLookAt() in OpenGL, but it first clears the current camera settings.

设置相机的位置, 通过设置眼睛的位置, 场景的中心, 以及哪个轴朝上。移动眼睛位置和它指向的方向 (场景的中心) 允许从不同的角度看到图像。没有任何参数的版本将照相机设置为默认位置, 指向显示窗口的中心, 并将 Y 轴向上。默认值为照相机 (宽度/2.0、高度/2.0、(高度/2.0)/tan (PI * 30.0/180.0)、宽度/2.0、高度/2.0、0、0、1、0)。此函数与 OpenGL 中的 gluLookAt () 类似, 但它首先清除当前的照相机设置。

Syntax

camera()

camera(eyeX, eyeY, eyeZ, centerX, centerY, centerZ, upX, upY, upZ)

Parameters

Returns

void

Related

beginCamera()
endCamera()
frustum()