Two Point Perspective

دوره: رازهای نقاشی / فصل: پرسپکتیو خطی / درس 2

Two Point Perspective

توضیح مختصر

A look at how to use two point perspective to create the illusion of space in a drawing. Concepts covered include horizon line, vanishing points, two point perspective.

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Is welcome to the seventh video and the secret to drawing video course brought to you by the virtue instructor dot com in this video we’re going to continue to explore ways that you can create the illusion of space on a two dimensional surface. In this video we’re going to talk about two point perspective two point perspective is a form of linear perspective that uses Lon’s to create the illusion of space in a drawing to point perspective relies on two vanishing points placed on the horizon line to create this illusion. It’s different than one point perspective that relies on only one vanishing point. Remember there are six different ways to create the illusion of space on a two dimensional surface to point perspective is one of the six ways to create this illusion. We’ll begin with two point perspective in the same way that we began with 1 point perspective. By defining the horizon line remember the horizon line is the line that divides the Scath from the ground . Or it could indicate the viewers line of sight. Next we’ll place to then ashing points on the horizon line. Remember that the horizon line theoretically continues in either direction. You can place the vanishing points anywhere on this horizon line. Just make sure they’re spread apart from each other. Now in 2 point perspective will draw all the corner of the object that we’re drawing. This is different from one point perspective in which we drew the general shape of the object that we’re drawing. Next we’ll draw two lines from each end of that corner to one of the vanishing points. In this case we’ll start with the vanishing point on the left side of the horizon line. Now we’ll do the same thing except to the opposite vanishing point on the right side. So we’ll draw two more lines each from the ends of the original corner back to the vanishing point on the right side. Now we’ll figure out where our object ends since we’re drawing a cube here. We’ll pick two places on either side for our cube to end and draw vertical lines on each side then from each ends of those vertical lines will draw lines to the opposite vanishing point . Now all that’s left to do is to erase the lines that we no longer need to reveal our cube. You can see the lines that we need to erase. There is one thing to consider though. There are more lines that exist here in this space. These lines are not going to be seen. But it’s important for you to understand where they are. These lines will go from each opposite end of the form to the opposite vanishing point. It will give us information about where the corner exists on the back side of our cube. You can see this illustrated here if we were drawing an object that’s transparent or translucent or if we needed to know information about the other three sides. This is how we would find that information. In most cases however you’ll be using 2 point perspective to find information about a solid geometric form like the cubes seen here. Now let’s take a look at two point perspective in action for this exercise you need a ruler you’ll need an HP graphite pencil or a number two pencil softer graphite pencils are fine but might be harder to trace and you’ll also need an eraser will begin by drawing a horizon line and placing two vanishing points on the horizon line. Remember these vanishing points can be placed outside of the picture plane as long as they’re on the horizon line. Next we’ll draw the corner of the object and then we’ll draw two lines from each end of the corner to one of the vanishing points. Repeat this process on the other side to the other vanishing point two lines from each end of the original corner to the vanishing point. Now we just need to figure out where object ends and we’ll draw two vertical lines on each side of our original corner to indicate this. Now we’ll draw lines from each end of those two lines to the opposite vanishing point to complete the top of our cube. Now remember more lines exist here. I’ll draw them lightly so you understand where they are we won’t see these lines. However since the cube that we’re drawing is going to be a solid one. Now we can erase whole lines. We no longer need to reveal our three dimensional cube in space . Now let’s draw another cube that exist behind this one. Again we’ll start with the corner. We’ll use the same two vanishing points that we used previously drawing two lines from each end of our original corner to one of the vanishing points. Then repeat the process for the other side . Next we’ll figure out where this cube ends on both sides. Since we won’t see the top of this cube because of our line of perspective it’s OK if we don’t draw the other two lines we can go ahead and erase the lines that we don’t need anymore at this point . Next let’s draw another cube that exist on the other side of our original corner. Again we’ll start by drawing the corner of the object then lines from each end of that corner to each of the vanishing point . Next we’ll figure out where this object ends and draw vertical lines on each side of our original corner to indicate this. We can now erase the lines that we no longer need to reveal our next cube . Now let’s start to turn this into a believable scene. We’ll add a couple of roads. We’ll only use one of the vanishing points to indicate this first road. Then we’ll use the opposite vanishing point to indicate the second road. In this case we’re going to create the illusion of an intersection. We can draw the corner here to indicate a curb and then lines back to the other vanishing point to indicate the bottom portion of the curve. Now it’s at a sidewalk on the other side of the road. We’ll draw another line to one of the vanishing points then we’ll draw more lines to the opposite vanishing point to indicate the breaks in the sidewalk. Let’s say there’s a building that exists here in the foreground. Watch what happens when using 2 point perspective. We’ll start with a corner. But it wouldn’t really make sense to do things the way we’ve done the buildings went in look realistic . So instead we’ll go to the opposite vanishing point out the opposite end of the corner to create the rest of the building. This means we’ll no longer see any of the lines inside of this form so we can go ahead and erase them . Now one of the objects I erased was the vanishing point. It’s important to keep in mind where it is. So I’ll return it. Now let’s add some windows to the building. First we’re going to draw two lines to the vanishing point on the left side. Then we’re going to draw a series of vertical lines to indicate where the windows end and the next window begins. I’ll add a bit of value inside of the shapes to create the illusion of the windows. Nextel did the same thing on the opposite side. Again two lines to the opposite vanishing point this time then vertical lines to indicate the windows in a bit of value to create contrast . Now let’s add a door to the side of the building. Again we’ll go to the vanishing point that matches this side of the building then we’ll draw two vertical lines to indicate where the doorway begins to create a recess. We’ll go to the opposite vanishing point and then add a vertical line then back to our original vanishing point to finish off the illusion of a recess here. We’ll add a little bit of value to create some contrast . Now let’s add another road to add to the realism. Again we’ll go to our vanishing point on the left side where the road connects. We can put a vertical line to indicate the curb. And then another line to her vanishing point to indicate the bottom of the curb will continue the curve in the foreground as well. And just to create more depth we’re at a mountain range in the background. So what did we learn in this video. Well first we learned that 2 point perspective is a form of linear perspective that uses lines to create the illusion of space. Remember that two point perspective uses two vanishing points unlike one point perspective. In fact an artist should either use one point to point or three point perspective. Never mix methods in the next video we’ll take a look at the third way to create linear perspective . Three point

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