The corresponding definite integrals are given by four evaluations, each according to the rule, given in Eq. In these expressions, all terms that depend only on one coordinate have been omitted, as they finally cancel out.
For this example’s host code, we can reuse a substantial amount of code from the previous matrix multiplication example, including the code that will create the context and the command queue. The main steps for the host code are similar to those in Figure 4.2. In this case, because we rotating about the originĭest_data = src_data Īs seen in the previous kernel code, image rotation is an embarrassingly parallel problem, in which each resulting pixel value is computed independently. Read (ix,iy) src_data and store at (xpos,ypos) in Int ypos = (int)(yOff*cosTheta − xOff*sinTheta + y0) Int xpos = (int)(xOff*cosTheta + yOff*sinTheta + x0) Calculate location of data to move into (ix,iy) Work-item gets its index within index space _global float* dest_data, _global float* src_data,įloat sinTheta, float cosTheta) //Rotation Parameters For this reason, we need to check the bounds of the calculated output coordinates. When an image is rotated, the new locations of some pixels may be outside the image if the input and output image sizes are the same (see Figure 4.3, in which the corners of the input would not have fit within the resultant image). Step 2: Select the slide with the picture from the column at the left side of the window, then click on the picture once to select it.The image rotation example is a good example of an input decomposition, meaning that an element of the input (in this case, an input image) is decomposed into a work-item. Step 1: Sign into your Google Drive at and open the Slides file containing the picture you wish to rotate. The steps in this article were performed in the desktop version of the Google Chrome Web browser, but will work in other desktop browsers like Firefox and Edge, too. How to Turn, Tilt, or Flip a Picture in Google Slides There are a couple of default rotation options that you can choose from, as well as an additional formatting menu where you can specify a degree of rotation if the 90 degree default increments aren’t what you need. Our guide below will show you how to select a picture in your Google Slides presentation and rotate it to the desired orientation. Have you ever added a picture to your slideshow, only to discover that it’s upside down or sideways? This is fairly common and, luckily, it’s something that you can fix in Google Slides without needing to use another application.
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