modelY()

本参考资料用于Processing 3.0+。 如果你使用的是前一版本,请在使用软件帮助菜单内的参考资料。. If you see any errors or have suggestions, please let us know. If you prefer a more technical reference, visit the Processing Core Javadoc and Libraries Javadoc.

名称

modelY()

示例


void setup()
{  
size(500, 500, P3D);


noFill();


  } 
void draw()
{  
background(0);


pushMatrix();


// start at the middle of the screen   translate(width/2, height/2, -200);



  // some random rotation to make things interesting   rotateY(1.0);

//yrot);


rotateZ(2.0);

//zrot);


// rotate in X a little more each frame   rotateX(frameCount / 100.0);


// offset from center   translate(0, 150, 0);


// draw a white box outline at (0, 0, 0)   stroke(255);


box(50);


// the box was drawn at (0, 0, 0), store that location  float x = modelX(0, 0, 0);


float y = modelY(0, 0, 0);


float z = modelZ(0, 0, 0);


// clear out all the transformations   popMatrix();


 // draw another box at the same (x, y, z) coordinate as the other   pushMatrix();


translate(x, y, z);


stroke(255, 0, 0);


box(50);


popMatrix();


  }  
描述 返回值 the three-dimensional X, Y, Z position in model space. This returns the Y value for a given coordinate based on the current set of transformations (scale, rotate, translate, etc.) The Y value can be used to place an object in space relative to the location of the original point once the transformations are no longer in use.

In the example, the modelX(), modelY(), and modelZ() functions record the location of a box in space after being placed using a series of translate and rotate commands. After popMatrix() is called, those transformations no longer apply, but the (x, y, z) coordinate returned by the model functions is used to place another box in the same location.

语法
modelY(x, y, z)
参数
x float: 3D x-coordinate to be mapped
y float: 3D y-coordinate to be mapped
z float: 3D z-coordinate to be mapped
返回值 float
相关 modelX()
modelZ()

Updated on October 2, 2018 05:02:09pm EDT

modelY()