For the cardioid curve , a fast pixel - level drawing algorithm is presented 摘要給出了快速繪制心臟線的逐點(diǎn)算法。
Cardioid is directional on one side only , and is typically used for drums 心形是單一的指向一個(gè)方向,非常適合用來(lái)錄鼓。
Cardioid polar response 心形極座標(biāo)響應(yīng)
On each step of iteration , no trigonometric function is used , and only four multiplications for cardioid curve are required 迭代過(guò)程中避免了三角函數(shù)的運(yùn)算,每步僅需4次(心臟線)乘法運(yùn)算。
Other patterns include “ super cardioid ” ( very directional ) , which may be useful if you want to tighten up the sonic picture 別的指向型包括“超心型” (超指向) ,假如你想縮緊聲場(chǎng)可能會(huì)用得著。
The microphone has very selective directionality - we use the term ' hyper - cardioid ' to describe the directional characteristics of the unit 麥克風(fēng)已經(jīng)非常有選擇性的方向性-我們用 '超心 '來(lái)形容定向結(jié)合本單位的特點(diǎn)。
By taking advantage of the characteristic of the curves ' expression , the algorithm changes the cardioid curve into the linearly combination of some simple iterations 基于曲線表達(dá)式的特點(diǎn),該算法將心臟線的點(diǎn)坐標(biāo)迭代關(guān)系轉(zhuǎn)化為幾個(gè)簡(jiǎn)單的迭代關(guān)系的線性組合。
They not only inherit the advantages of bezier curves and b - spline curves , also can be used to represent straight lines precisely and some remarkable transcendental curves precisely , such as circular arc , ellipse , cardioids and twisted pair line etc . especially , the uniform t - b - spline curve of three degrees is smoother than b - spline curve and c - b - spline curve of the same order 此外由于它們還具有三角函數(shù)的優(yōu)點(diǎn),故既可以精確表示直線段、二次多項(xiàng)式曲線段又可以精確表示圓弧、橢圓弧等二次曲線以及心臟線、雙紐線等超越曲線。特別地, 3次均勻t - b樣條曲線曲面比同階均勻b樣條( c - b樣條)曲線曲面具有更高的光滑度。
英文解釋
an epicycloid in which the rolling circle equals the fixed circle