利用Box2D+WCK賦予Flash物理特性 萬有引力
這已經是第五篇Box2D+WCK的介紹文章了,前面幾篇文章如果各位有注意應該會發現,所有範例的萬有引力都跟現在我們生活的環境一樣,物件像是被地心引力給吸引著都會往下方掉落,其實我們在使用這個模組的時候,也可以改變這樣的萬有引力,讓這些物件不要往下掉落而是往我們所指定的方向移動,馬老師在這邊大概製作了三種不同類型的萬有引力範例,分述如下:
1.容器型萬有引力:這個萬有引力是利用一個封閉的空間來繪製的。
大概的製作步驟如下:
我們可以在World元件中繪製一個如下圖的形狀:
接下來將他轉換成一個影片片段,在類別的部分輸入gravity.GravityCapsule的名稱,如下圖所示:
接下來把這個元件拖曳到World元件裡面就可以了。
2.放射狀萬有引力:這種萬有引力是以往內或往外放射狀的方式存在。
我們可以在World元件中繪製一個如下圖的形狀:
接下來將他轉換成一個影片片段,在類別的部分輸入gravity.GravityRadial的名稱,如下圖所示:
接下來把這個元件拖曳到World元件裡面就可以了。
3.正弦萬有引力:就是三角函數的sin。
我們可以在World元件中繪製一個如下圖的形狀:
接下來將他轉換成一個影片片段,在類別的部分輸入gravity.GravitySine的名稱,如下圖所示:
接下來把這個元件拖曳到World元件裡面就可以了。
同樣的也讓大家可以下載以上的三個範例檔,範例檔為CS5格式,下載後要重新設定來源路徑和元件庫路徑喔!希望這個範例對大家有所幫助,如果還有疑問,也可以在這邊回應唷~
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A librarian ran off with a yacht captain in the summer of 1968. It was the start of an incredible love story
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“This man stepped out of a taxi, and we both just stared at each other,” Beverly tells CNN Travel today. “You have to remember, this is the ‘60s. Girls didn’t stare at men. But it was a thunderbolt.”
It was June 1968. Beverly was a 23-year-old Canadian university librarian on vacation in Mazatlan, Mexico, with a good friend in tow.
Beverly had arrived in Mazatlan that morning. She’d been blown away by the Pacific Ocean views, the colorful 19th-century buildings, the palm trees.
Now, Beverly was browsing the hotel gift store, admiring a pair of earrings, when she looked up and spotted the man getting out of the taxi. The gift shop was facing the parking lot, and there he was.
“I was riveted,” says Beverly. “He was tall, handsome…”
Eventually, Beverly tore away her gaze, bought the earrings and dashed out of the store.
“We locked eyes so long, I was embarrassed,” she says.
No words had passed between them. They hadn’t even smiled at each other. But Beverly felt like she’d revealed something of herself. She felt like something had happened, but she couldn’t describe it.
Beverly rushed to meet her friend, still feeling flustered. Over dinner in the hotel restaurant, Beverly confided in her friend about the “thunderbolt” moment.
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As a rule, Beverly avoided accepting drinks from men in bars. She never felt especially comfortable with the power dynamic — plus, she had a long-term partner back in Canada.
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Xavier completes thrilling comeback, Mount St. Mary’s advances as men’s First Four comes to a close
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Wednesday saw the men’s First Four come to a close which means only one thing: the 64-team bracket is officially set following No. 11 Xavier’s thrilling come from behind win over No. 11 Texas and No. 16 Mount St. Mary’s victory over No. 16 American in Dayton, Ohio.
The Musketeers trailed by as many as 13 points, but their offense came alive in the second half behind guard Marcus Foster and forward Zach Freemantle to down the Longhorns 86-80.
The senior Foster scored a team-high 22 points while Freemantle, on his way to 15 points, threw down a dunk with a second left to seal the comeback win and ignite the fans at UD Arena, which is just over 50 miles away from campus in Cincinnati, Ohio.
With just under four minutes remaining, Xavier went on an 8-2 run to take a 78-74 lead, their first since the early going of the first half.
Musketeers head coach Sean Miller crowned Wednesday’s game as “one of the best” he’s been a part of.
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The Longhorns did not go down without a fight as guard Tre Johnson scored a game-high 23 points in the loss.
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The world’s largest architectural model captures New York City in the ’90s
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The Empire State building stands approximately 15 inches tall, whereas the Statue of Liberty measures at just under two inches without its base. At this scale, even ants would be too big to represent people in the streets below.
These lifelike miniatures of iconic landmarks can be found on the Panorama — which, at 9,335 square feet, is the largest model of New York City, meticulously hand-built at a scale of 1:1,200. The sprawling model sits in its own room at the Queens Museum, where it was first installed in the 1960s, softly rotating between day and night lighting as visitors on glass walkways are given a bird’s eye view of all five boroughs of the city.
To mark the model’s 60th anniversary, which was celebrated last year, the museum has published a new book offering a behind-the-scenes look at how the Panorama was made. Original footage of the last major update to the model, completed in 1992, has also gone on show at the museum as part of a 12-minute video that features interviews with some of the renovators.
The Queens Museum’s assistant director of archives and collections, Lynn Maliszewski, who took CNN on a visit of the Panorama in early March, said she hopes the book and video will help to draw more visitors and attention to the copious amount of labor — over 100 full-time workers, from July 1961 to April 1964 — that went into building the model.
“Sometimes when I walk in here, I get goosebumps, because this is so representative of dreams and hopes and family and struggle and despair and excitement… every piece of the spectrum of human emotion is here (in New York) happening at the same time,” said Maliszewski. “It shows us things that you can’t get when you’re on the ground.”
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The Panorama was originally built for the 1964 New York World’s Fair, then the largest international exhibition in the US, aimed at spotlighting the city’s innovation. The fair was overseen by Robert Moses, the influential and notorious urban planner whose highway projects displaced hundreds of thousands New Yorkers. When Moses commissioned the Panorama, which had parts that could be removed and redesigned to determine new traffic patterns and neighborhood designs, he saw an opportunity to use it as a city planning tool.
Originally built and revised with a margin of error under 1%, the model was updated multiple times before the 1990s, though it is now frozen in time. According to Maliszewski, it cost over $672,000 to make in 1964 ($6.8 million in today’s money) and nearly $2 million (about $4.5 million today) was spent when it was last revised in 1992.