Note: This series blog was translated from Nathan Vaughn's Shaders Language Tutorial and has been ...
tag tag Note: This series blog was translated from Nathan Vaughn s Shaders Language Tutorial and has been authorized by the author. If reprinted or reposted, please be sure to mark the original link a ...
2021-11-01 09:34 0 119 推荐指数:
Note: This series blog was translated from Nathan Vaughn's Shaders Language Tutorial and has been ...
tag-2021-04-15-tag Note: This series blog was translated from Nathan Vaughn's Shaders Language T ...
Note: This series blog was translated from Nathan Vaughn's Shaders Language Tutorial and has been ...
shadertoy使用教程 /** *常量定义 */ uniform vec3 iResolution; // 窗口分辨率,单位像素 uniform float iTime; // 程序运行的时间,单位秒 uniform float ...
有人说,红孩儿的三昧真火是老君的,罗刹女的芭蕉扇也是老君的,那么罗刹女和太上老君是否有私情? 多么意味深长的一段话,哈哈哈! 其实原著中,红孩儿的三昧真火也是拜猴子所赐;想当年,那猴子,逞英勇,耍 ...
假设对图片上任意点(x,y),绕一个坐标点(rx0,ry0)逆时针旋转a角度后的新的坐标设为(x0, y0),有公式:x0= (x - rx0)*cos(a) - (y - ry0)*sin(a) + rx0 ;y0= (x - rx0)*sin(a) + (y - ry0)*cos ...
在Opencv中的图像处理中,经常要用到minAreaRect()函数求最小外接矩形,该函数的返回值就是一个RotatedRect类对象。 RotatedRect类定义如下: 类中定义了矩形的中心点center、尺寸size(包括width、height)、旋转 ...
前言 最近在做的一款游戏中,用到点与旋转矩形的判定来获得一个选中的物体。在此做个记录 如图所示,黄色的颜料屏是旋转的,如果不做处理直接判断点是否在矩形中,那么点击红点的位置会判定为选中物体。显然这是不对的。 如果物体没有旋转,判断方法就很简单了。 我这个矩形锚点为为(0.5,0.5 ...