第一天03課件正方體移動(dòng)案例

寬度高度寬度深度高度線框渲染純色著色加圖片加圖片紋理貼圖啊A點(diǎn)B點(diǎn)C點(diǎn)D點(diǎn)A(-0.1,-0.1)B(0.1,-0.1)C(0.1,0.1)D(-0.1,0.1)啊A點(diǎn)B點(diǎn)C點(diǎn)D點(diǎn)

-0.1-0.100120.1-0.103450.10.10678-0.10.1091011A點(diǎn)B點(diǎn)C點(diǎn)D點(diǎn)啊A點(diǎn)B點(diǎn)C點(diǎn)D點(diǎn)blockSize是正方形的邊長(zhǎng)stepSize是移動(dòng)的步長(zhǎng)blockX

=

v[0]

=

-0.1blockY

=

v[10]

=

0.1左邊的X,Y啊A點(diǎn)B點(diǎn)C點(diǎn)D點(diǎn)向上移動(dòng)：

blockY

+=

stepSize向下移動(dòng)：

blockY

-=

stepSize向右移動(dòng)：

blockX

+=

stepSize向左移動(dòng)：

blockX

-=

stepSize啊A點(diǎn)B點(diǎn)C點(diǎn)D點(diǎn)A點(diǎn)：

V[0]=X:blockX

V[1]=Y:block

–blockSize*2B點(diǎn)：

V[3]=X:blockX

+

blockSize*2

V[4]=Y:block

–

blockSize*2C點(diǎn)：

V[6]=X:blockX

+

blockSize*2

V[7]=Y:blockYD點(diǎn)：

V[9]=X:blockX

V[10]=Y:blockY啊A點(diǎn)B點(diǎn)C點(diǎn)D點(diǎn)向右移動(dòng)：blockX

=

-0.075blockY

=

0.1A(-0.075,-0.1)B(0.125,-0.1)C(0.125,0.1)D(-0.075,0.1)啊A點(diǎn)B點(diǎn)C點(diǎn)D點(diǎn)向左移動(dòng)：blockX

=

-0.125blockY

=

0.1A(-0.125,-0.1)B(0.075,-0.1)C(0.075,0.1)D(-0.125,0.1)啊A點(diǎn)B點(diǎn)C點(diǎn)D點(diǎn)向上移動(dòng)：blockX

=

-0.1blockY

=

0.125A(-0.1,-0.075)B(0.1,-0.075)C(0.1,0.125)D(-0.1,0.125)啊A點(diǎn)B點(diǎn)C點(diǎn)D點(diǎn)向下移動(dòng)：blockX

=

-0.1blockY

=

0.075A(-0.1,-0.125)B(0.1,-0.125)C(0.1,0.075)D(-0.1,0.075)啊A點(diǎn)B點(diǎn)C點(diǎn)D點(diǎn)邊界問(wèn)題:右邊邊界

blockX

=

1.0

–

blockSize*2啊A點(diǎn)B點(diǎn)C點(diǎn)D點(diǎn)邊界問(wèn)題:左邊邊界

blockX

=

-1.0f啊A點(diǎn)B點(diǎn)C點(diǎn)D點(diǎn)邊界問(wèn)題:下邊邊界

blockY

=

-1.0f

+

blockSize*2啊A點(diǎn)B點(diǎn)C點(diǎn)D點(diǎn)邊界問(wèn)題:上邊邊界

blockY

=

1.0f假設(shè)有一個(gè)球體，半徑為1，圓心在(0,0,0)，那么，我們?cè)O(shè)定glOrtho(-1.5,1.5,-1.5,1.5,-10,10);就表示用一個(gè)寬高都是3的框框把這個(gè)球體整個(gè)都裝了進(jìn)來(lái)。

如果設(shè)定glOrtho(0.0,1.5,-1.5,1.5,-10,10);就表示用一個(gè)寬是1.5，高是3的框框把整個(gè)球體的右面裝進(jìn)來(lái);