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- For the cardioid curve, a fast pixel-level drawing algorithm is presented. 摘要给出了快速绘制心脏线的逐点算法。
- By taking advantage of the characteristic of the curves' expression, the algorithm changes the cardioid curve into the linearly combination of some simple iterations. 基于曲线表达式的特点,该算法将心脏线的点坐标迭代关系转化为几个简单的迭代关系的线性组合。
- A Pixel-Level Algorithm for Generating the Cardioid Curve 心脏线的逐点生成算法
- Construct the cardioid and its evolute. 建构心脏线及其渐屈线。
- the cardioid curve 心脏线
- What does the cardioid envelope? 心脏线的包络为何?
- On each step of iteration, no trigonometric function is used, and only four multiplications for cardioid curve are required. 迭代过程中避免了三角函数的运算,每步仅需4次(心脏线)乘法运算。
- Construct the cardioid as the envelope of a family of circles. 作一由圆族包络线所形成的心脏线.
- Construct the cardioid as the envelope of a family of line segments. 作由线段族包络线所形成的心脏线.
- Explore properties associated with the triangle with vertices the points of contract of three parallel tangents of the cardioid. 探讨性质:心脏线的三条平行切线切点的距离和性质,及切点构成三角形三顶点的面积和性质。
- The falling star described a long curve in the sky. 流星在空中画出了一道长长的弧线。
- Construct an animation displaying three parallel tangents of the cardioid in any direction, and the values of the angle at their points of contact differ by 120 degrees. 建构一动态绘图:展示心脏线在任意方向的的三条平行切线,且其接触点各间隔120度。
- The coast sweeps (away) northwards in a wide curve. 海岸呈一大弧形向北伸展。
- The wind whirled the dead leaves about. 风吹得枯叶在四处回旋。
- The wind was whispering in the trees. 一阵风穿过树林沙沙作响。
- There are 26 letters in the English alphabet. 英语字母表中有26个字母。
- Foreign nationals were asked to leave the country. 外国侨民被要求离开该国。
- Construct the cardioid. [ 心脏线作图 ] .
- A cloud is a mass of vapor in the sky. 云是天空中的水汽团。
- A country must have the will to repel any invader. 一个国家得有决心击退任何入侵者。
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