 Hi everyone. Myself Supriya Pasnoor working as an assistant professor in civil department from Olcane Institute of Technology, Sulapur. Today's class we are going to discuss the Angular perspective. These are the learning outcomes. At the end of this session students will be able to draw need perspective view drawings of an object. So there are different types of the perspective that is the one point which is also called as the parallel perspective and the two point perspective that is called as the angular perspective. So in the parallel perspective you have one vanishing point and the two point perspective you have two vanishing points. So the perspective it is an art of representing a three dimensional view of an object which is drawn on a two dimensional surface or the medium. Actually it doesn't represent the true shape and the size of an object but it just gives an impression that is made on the paper which represents the height and the width or the depth of the object with reference to the other point. So this is the angular perspective. So in this the top view and the front view of the object is given. So can you tell what is the two point perspective? Here you can pause the video for two seconds and try to give the answer for that. This is the right answer for that. So in the two point perspective the two vanishing points are placed on the horizon line. The most commonly the two point perspective is used for drawing the building or the interior. So this line could be the corner of a building. So this line is drawn in between the two vanishing point and can cross over the horizon line. So horizon line is nothing but the line on that line itself the vanishing point has to be taken. So as it is a two point perspective you have two vanishing points. And the vanishing points to that all the orthogonal projections are joined. So this is the angular perspective. So when the top view and the front view of the object is given. So this is the picture plane. Picture plane is nothing but the observer from where he is seeing the object. So there is an angle which is taken over here. So this is the shorter dimension of the object and this is the longer dimension of the object. So the longer the edge of the object it is kept at an angle of 60 degrees. Whereas the shorter edge of the object it is kept at an angle of 30 degrees. So these are the sides of the object. So when you have the same sides that is the equal sides as you can take when it is in this is in this is the case of a rectangular object when you have. When you have a square object that should be kept at an angle of 30-30 degrees. So in case of the rectangular the sides of the object are kept at an angle of 30 and 60 degrees. So this is the top view of the object which is kept at the picture level. So next you have the station point. This is what the station point is. The station point it is nothing but the point of the observation. So this is the station point which is taken at a distance of 2D that is 2 times the maximum dimension of the object that is the maximum longer dimension of the object. You can take this distance from the picture plane as 2D. So over there you have to place the station point. Station point is nothing but the point of the observation from where you are observing the object. So from that point itself you have to draw the you have to draw a line which will be parallel to this line itself from this point you have to take a line which will be parallel to this side. So wherever it cuts the picture plane over there you get a first vanishing point. So again you have this station point and the second edge of the object from here you have to draw up a line which will be parallel to this side. So while dropping the parallel line you get a picture plane which cuts the picture plane somewhere. So that represents the second vanishing point. So in this way you got two vanishing points which is the concept of the two point perspective. So it is called as the angular perspective as you take the angle in this case. So next you have the ground level. So ground level it is placed at the bottom edge of the paper. So over there the ground level is placed. On the ground level you are going to draw the vertical line which represents the front edge of the building. So this is the corner of the building. So when you represent this on the ground level you have the two corners of that or the two edges of that object itself. So these two points they are joined to the vanishing point. So let's see what happens next. So as you have the four corners of this object they are directly connected to the station point. So while joining to the station point it cuts the picture plane somewhere here. So from that point itself you are going to drop a vertical line. So let's see. Yes we have dropped a vertical line over here. So you can see that in this vertical line which you have drawn which represents the front edge of the box it is drawn. So these two corners of the line they are joined to the vanishing point. And this corner you have to take first corner it is joined to the station point. So the top view of the object all the orthogonal projections should be all the corners should be joined to the station point whereas the front view of the object should be joined to the vanishing point. So while dropping the vertical line it cuts the orthogonal projection somewhere here. So that will be the backside of the object which it represents. Next you have to take the second corner the second corner is joined to the station point while joining to the station point it cuts the picture plane somewhere here. So from that point itself we are going to drop a vertical line. So while dropping the vertical line it cuts the orthogonal projections over here which represents the other side of that object itself. So next again take the third corner of the object from that join it to the station point while joining to the station point it cuts the picture plane from that point itself you are going to drop a vertical line. So next we will see in the next slide. So this is how while dropping it to the while joining to the orthogonal projection it you get a corner of this point you get a corner this point itself you are going to join to this vanishing point that is the cross connection you have to do. So let's see. So here you get the point this point it is joined to the vanishing point over this side. Now you have the second point also this one. So this has to be joined to the second vanishing point. So while joining this vanishing point to that let's see what happens. So this corner it is joining over here from that line itself you are going to drop a vertical line. So you have dropped a vertical line over here. So this part has to be darkened you have to do dark so that represents the object which you are going to draw. So this is the object overall in this projection itself you are going to draw the whole object which represents the back side of the back view of that object itself. So next this second one second line the second projection you are supposed to take. So again the same way you are going to take this line itself now. So they will take two corners of that line the first corner you are going to join to the station point and the second corner join to the station point while joining to the station point it cuts the picture plane from that point itself you are going to draw a vertical line. So that we will see in the next slide yes we have drawn the second line itself. So it cuts the orthogonal projection we have taken a line over here which represents the cut portion which is given in the front view it is the front view you have to mark the on the vertical line itself take that height and that point has to be joined to the vanishing point. So over here while dropping this vertical line over here it cuts this point somewhere here so this part has to be darkened. So from that you have to take the second line now same in the second line itself you have two corners take that two corners join to the station point while joining to the station point it cuts the picture plane from that plane itself you are going to draw a particular perpendicular line. So let's see yes this is the object this is the front view of the object which is given to you in the top view and the front view. So this is what the front view of the object is. So as per the projection you have dark that part itself so while doing that while dropping this vertical line you get this corner of that object this is how the object is represented over all. So even here this is the line which has to be taken perpendicular. So this is the object which is represented you can see that this is the cut portion of the object which is taken in the central part right. So this is what the front view of the object is. So in this way the two point perspective it helps us to represent overall the 3D model or the 3D of that object itself which cannot be represented on the paper whereas the paper is a two dimensional surface. So this is what it is represented in the two point perspective and it is necessary to it is actually used in the interiors of the buildings. So in this you are supposed to take an angle of 30 and 60 degrees. So this is the picture plane the ground level and the station point. So station point is nothing but the overall the point of the observation from where you are seeing the object itself. And this is the plane of the observation the picture plane. These are the MCQs. It is a vertical projection plane used to obtain the object's perspective that is the first one you have orthographic plane second is the vertical plane third is the perspective picture plane fourth is the horizontal plane. Hope so you have got the right answer for that. Yes perspective picture plane is the right answer. These are the references. Thank you.