1 00:00:00,360 --> 00:00:05,150 So now it's time to create I'm fed inside this colorful class. 2 00:00:05,250 --> 00:00:12,310 So before the ending curly brace of these colorful class here I'm gonna say public so the access modifier 3 00:00:12,330 --> 00:00:13,530 of this method is public. 4 00:00:13,650 --> 00:00:16,530 Now I need to specify the return type of this method. 5 00:00:16,770 --> 00:00:19,750 The return type of this method is going to be bitmap. 6 00:00:19,820 --> 00:00:28,300 Write the name of this if it is going to be colorize colorize the beath map. 7 00:00:28,350 --> 00:00:38,180 OK so let's actually to change it to return return the colorize colorized bitmap because if it is you 8 00:00:38,180 --> 00:00:40,140 need to return a value of a bitmap. 9 00:00:40,150 --> 00:00:42,010 It's better to name it in this way. 10 00:00:42,040 --> 00:00:44,090 Return the colorized bitmap. 11 00:00:44,350 --> 00:00:45,700 So just put a pair of parenthesis. 12 00:00:45,760 --> 00:00:48,880 If it is going to it's not going to accept any parameters. 13 00:00:49,000 --> 00:00:51,780 So just open and close this method by using this curly braces. 14 00:00:52,000 --> 00:00:53,200 Let's say this. 15 00:00:53,240 --> 00:00:55,070 And let's see what you are going to do next. 16 00:00:56,700 --> 00:01:03,870 So first of all let me tell you that we actually created an instance variable inside our colorful class. 17 00:01:03,870 --> 00:01:10,110 Here it is in line number 13 you can see that we have an instance variable which is of type bitmap and 18 00:01:10,110 --> 00:01:10,910 this is private. 19 00:01:10,920 --> 00:01:12,490 The name is bitmap right. 20 00:01:12,510 --> 00:01:13,740 Let's scroll down here. 21 00:01:13,770 --> 00:01:19,460 Inside this method because this method is going to actually return a value of type bitmap. 22 00:01:19,470 --> 00:01:25,560 I am going to manipulate my instance variable which is of type bitmap so I'm going to actually first 23 00:01:25,560 --> 00:01:31,320 of all I'm going to get the width of the bitmap so I'm going to say eat wheat or bitmap. 24 00:01:31,410 --> 00:01:32,220 Actually bitmap 25 00:01:34,920 --> 00:01:38,120 assignment operator bitmap dots. 26 00:01:38,190 --> 00:01:41,420 Get with a semicolon right. 27 00:01:41,520 --> 00:01:50,970 Let's now actually get the height of that bitmap so it bitmap height bitmap height assignment operator 28 00:01:51,250 --> 00:01:54,810 base map that gets height. 29 00:01:54,900 --> 00:01:59,520 Let me introduce just they've been bitmap that gets height semi-colon. 30 00:01:59,670 --> 00:02:05,370 Right now I have the V and the height of my bitmap instance variable. 31 00:02:05,490 --> 00:02:07,770 So let's actually go in. 32 00:02:07,830 --> 00:02:10,700 Let's actually add some more logic here. 33 00:02:10,710 --> 00:02:15,000 Now it's time to get the formats of the bitmap. 34 00:02:15,000 --> 00:02:21,870 It is called conflict so I'm going to say bitmap data can't feek it is of type that can't be right. 35 00:02:21,870 --> 00:02:27,990 This is the type right the name is going to be bitmap config assignment operator. 36 00:02:27,990 --> 00:02:36,290 Now I'm going to refer to my instance variable which is called bitmap that gets conferee semicolon is 37 00:02:36,390 --> 00:02:42,130 going to get convicted if it is going it's going to ask to return the format of the bitmap. 38 00:02:42,150 --> 00:02:48,290 Now I'm going to create an order object of type bitmap and I'm going to assign it to another variable 39 00:02:48,300 --> 00:02:50,160 so let me show you how we can do that. 40 00:02:50,160 --> 00:02:54,870 So we're going to say bitmap that the data type up my body but that they are going to create the name 41 00:02:54,870 --> 00:03:01,030 of my value but is going to be my bitmap my bitmap assignment operator. 42 00:03:01,190 --> 00:03:08,050 Now because this is actually a local variable Let's actually change it to local bitmapped local bitmap 43 00:03:10,140 --> 00:03:15,620 because it is only alive inside the curly braces of this math right. 44 00:03:15,650 --> 00:03:15,910 Right. 45 00:03:15,920 --> 00:03:18,380 So it is called the local local bitmap. 46 00:03:18,390 --> 00:03:25,840 Now I'm going to say bitmapped that creates bitmap this it is going to actually create a bit map for 47 00:03:25,840 --> 00:03:26,410 us. 48 00:03:26,410 --> 00:03:29,050 First we need to specify the bitmap which. 49 00:03:29,290 --> 00:03:33,740 So if we have that bitmap it will come up bitmap height color. 50 00:03:33,850 --> 00:03:38,590 And finally we need to pass the bitmap config bitmap conflict in this way. 51 00:03:38,680 --> 00:03:45,460 We actually created an object of type bitmap we divied height and the conferee of the bitmap of the 52 00:03:45,460 --> 00:03:47,160 instance valuable here. 53 00:03:47,410 --> 00:03:52,130 And we as scientists created objects to this local bitmap valuable. 54 00:03:52,180 --> 00:03:55,510 Right now let's see what we are going to do next. 55 00:03:55,510 --> 00:04:00,370 So as you may already know and a picture consists of pixels. 56 00:04:00,370 --> 00:04:00,890 Right. 57 00:04:00,940 --> 00:04:08,410 So I'm going to actually get each pixel inside my image by using a for loop and an inner for loop. 58 00:04:08,410 --> 00:04:09,990 Let me show you how we can do that. 59 00:04:10,000 --> 00:04:15,990 Let me show you how we can actually iterate over the pixels of an image. 60 00:04:16,300 --> 00:04:21,240 So I'm going to say for so first we need to specify the initial value. 61 00:04:21,230 --> 00:04:26,880 So and row assignment operator 0 right semi-colon. 62 00:04:27,290 --> 00:04:32,630 Now I'm going to specify the condition that specifies how many times this for loop is going to be executed 63 00:04:33,110 --> 00:04:37,200 until the show is less than the value of this bitmap. 64 00:04:37,210 --> 00:04:41,300 With bitmap with semi-colon. 65 00:04:41,550 --> 00:04:46,470 And finally I'm going to say that after each execution of this for loop we're going to add one value 66 00:04:46,470 --> 00:04:49,720 to the value of this row valuable row plus plus. 67 00:04:49,920 --> 00:04:53,170 Let's open and closed this for a loop by using these curly braces. 68 00:04:53,220 --> 00:04:56,960 So here I am iterating over each pixel in one in one row. 69 00:04:57,180 --> 00:05:06,570 So I'm going to create another for loop and say this for a loop sign when I say for NKT column assignment 70 00:05:06,570 --> 00:05:08,880 operator zero semicolon. 71 00:05:08,880 --> 00:05:10,380 So this is the initial value. 72 00:05:10,650 --> 00:05:19,640 So what is the condition the condition is until Cullom is less than bitmapped height semi-colon column 73 00:05:19,660 --> 00:05:23,090 plus plus that's it. 74 00:05:23,300 --> 00:05:26,630 Let's open and closed this for loop by using these curly braces. 75 00:05:26,630 --> 00:05:28,920 Now inside this for loop I can't say. 76 00:05:28,940 --> 00:05:30,190 So what does this mean. 77 00:05:30,200 --> 00:05:30,820 This for a loop. 78 00:05:30,890 --> 00:05:35,420 This means that you're either reading over each column of each row. 79 00:05:35,690 --> 00:05:36,150 Right. 80 00:05:36,170 --> 00:05:42,160 In this way if you are iterating over each pixel of our image our piece not actually right. 81 00:05:42,170 --> 00:05:47,450 So let's go inside this for loop and here inside the curly braces of this inner loop I can say here 82 00:05:47,460 --> 00:05:51,580 we can get the color of each pixel how we can do that. 83 00:05:51,650 --> 00:05:58,790 So create and it is a variable and the name of this variable is going to be pixel color write assignment 84 00:05:58,790 --> 00:06:06,480 operator here I'm going to refer to my instance variable which is called bitmaps I'm going to say bitmap 85 00:06:08,440 --> 00:06:12,800 dot get pixel bitmap that get pixel. 86 00:06:13,110 --> 00:06:16,140 Now we need to pass the row and the color. 87 00:06:16,380 --> 00:06:23,440 So we have the ROW comma column semicolon in the way it's going to get each pixel. 88 00:06:24,480 --> 00:06:29,960 Of our image and it's going to assign that value which is going to be a colored value right. 89 00:06:29,970 --> 00:06:32,290 And it's going to assign it to this value of a pixel color. 90 00:06:32,460 --> 00:06:37,150 It's going to get the color of each pixel and it's going to assign to this variable pixel color right. 91 00:06:37,380 --> 00:06:44,040 So after this line of code let's be fair because we want to actually change the color of each pixel 92 00:06:44,070 --> 00:06:45,080 of our image. 93 00:06:45,360 --> 00:06:51,480 I'm going to again refer to this pixel color assignment operator and I'm going to use this MFL color 94 00:06:51,540 --> 00:06:55,260 with capital C. OK color dot R G B. 95 00:06:55,290 --> 00:06:57,070 Use this method. 96 00:06:57,180 --> 00:07:01,760 So let's look at this if it is if it needs four arguments the first one is going to be the alpha. 97 00:07:02,070 --> 00:07:04,450 The second argument is going to be the color red. 98 00:07:04,680 --> 00:07:10,110 The first argument is going to be the color green and the fourth argument is going to be the color blue. 99 00:07:10,110 --> 00:07:13,960 So first we need to specify the Alfar of the pixel color. 100 00:07:15,800 --> 00:07:24,490 So here I can say that again the first of these color class with capital C dot Alpha. 101 00:07:25,310 --> 00:07:29,170 And here we need to pass an argument which is going to be half integer. 102 00:07:29,180 --> 00:07:35,060 And as you can see its name is color so this color is referring to the pixel color right. 103 00:07:35,090 --> 00:07:41,370 I'm going to get the same Alfar of my pixel color that we have inside our bitmapped the same alpha. 104 00:07:41,390 --> 00:07:43,830 So peaks color or just pass the piece of color here. 105 00:07:43,850 --> 00:07:46,020 So now I need to specify the color red. 106 00:07:46,430 --> 00:07:49,950 So not is that inside this for loop inside this inner fall. 107 00:07:49,960 --> 00:07:52,860 Actually we are changing or we are. 108 00:07:52,940 --> 00:07:58,260 In other words we are colorizing each pixel inside our Peetz map right. 109 00:07:58,310 --> 00:08:04,250 So you may notice that if we have some instance variables that may show this instance variables for 110 00:08:04,250 --> 00:08:07,730 the red colored value green color value and blue color value. 111 00:08:07,730 --> 00:08:14,440 So these instance variables these values are going to impact the color of each pixel right. 112 00:08:14,450 --> 00:08:16,760 This is the goal of this class actually. 113 00:08:16,820 --> 00:08:24,880 So here for the red color I'm going to say red color value multiplied by. 114 00:08:25,340 --> 00:08:32,420 So I'm going to multiply this value by the value of the red color actually so color does red with actually 115 00:08:32,460 --> 00:08:39,170 lowercase are color that red and this it needs an argument of type integer which is going to be the 116 00:08:39,530 --> 00:08:46,570 pixel color because I want to change the color of each piece so I'm going to pass pixel color right. 117 00:08:46,620 --> 00:08:50,130 So now it's actually showing us an error if we hovered over this area. 118 00:08:50,130 --> 00:09:00,060 It says that it's going to actually give us a value of type float because the lead color value is actually 119 00:09:00,240 --> 00:09:07,620 a float and the result of this operation here is going to be a value of a flawed color that red here 120 00:09:07,650 --> 00:09:11,480 is actually of that integer and this value is a float. 121 00:09:11,490 --> 00:09:16,920 The result of this operation is going to be flawed so we need to cast this red colored value to an integer 122 00:09:16,920 --> 00:09:17,830 value. 123 00:09:18,150 --> 00:09:18,950 How we can't do that. 124 00:09:18,990 --> 00:09:24,930 So before this varicolored value after the comma I want to put a pair of practices and instead of parenthesis 125 00:09:24,930 --> 00:09:27,300 just type in it that's it. 126 00:09:27,300 --> 00:09:28,600 Now the error is gone. 127 00:09:28,860 --> 00:09:31,290 So let's specify the other arguments. 128 00:09:31,320 --> 00:09:36,400 So after this second argument which is going to be space which is going to specify the red color comma 129 00:09:37,130 --> 00:09:40,450 and now I need to specify the color green. 130 00:09:40,470 --> 00:09:45,760 So again I'm going to say green color green color value right. 131 00:09:45,780 --> 00:09:49,630 Which is of type float multiplied by colored dots. 132 00:09:49,670 --> 00:09:56,000 Green and when we need to pass the piece of color here because we want to actually to change the pixel 133 00:09:56,000 --> 00:09:59,460 color right the color of each pixel if you want to colorized it. 134 00:09:59,600 --> 00:10:06,620 So we are using this green color value in order to impact each pixel and we are multiplying these two 135 00:10:06,620 --> 00:10:07,250 values to get there. 136 00:10:07,250 --> 00:10:08,360 So again it is flawed. 137 00:10:08,410 --> 00:10:10,680 We need to actually cast it to an integer value. 138 00:10:10,730 --> 00:10:15,320 So just pull a pair of Prentice's instead Apprentice's just open here and that's it. 139 00:10:15,320 --> 00:10:19,810 Now it's time to specify the final argument which is going to be the blue color. 140 00:10:19,820 --> 00:10:28,580 So again blue color value multiplied by color that blue Apprentice's I can easily refer to this pixel 141 00:10:28,580 --> 00:10:29,200 color. 142 00:10:29,210 --> 00:10:30,760 So again it is of type float. 143 00:10:30,770 --> 00:10:33,900 This blue color values of the float indicated an integer value. 144 00:10:33,920 --> 00:10:36,270 So just put up for Apprentice's here before its name. 145 00:10:36,590 --> 00:10:37,570 And just like in here. 146 00:10:37,730 --> 00:10:42,290 Now it is tested to an integer value and the result of this operation is going to be half that integer 147 00:10:42,560 --> 00:10:46,730 so that we have no problems passing this argument at the end of your statement. 148 00:10:46,730 --> 00:10:48,260 We must put a semicolon. 149 00:10:48,410 --> 00:10:52,710 So let me try to create a new line here so that you can see these values better. 150 00:10:52,970 --> 00:10:54,550 So you can see all these values here. 151 00:10:54,560 --> 00:11:02,120 First we are specifying the color Alfar by using that piece of color alpha here then we are specifying 152 00:11:02,120 --> 00:11:03,430 the actual red color. 153 00:11:03,440 --> 00:11:09,650 So notice that here when I say color that Alpha we want to specify to actually take Alpher of the pixel 154 00:11:09,650 --> 00:11:16,030 color which is going to be the same Alpher of the bitmap image that is going to be taken by the user 155 00:11:16,050 --> 00:11:17,460 by using the camera. 156 00:11:17,510 --> 00:11:20,350 So and then we need to specify the red color value. 157 00:11:20,690 --> 00:11:26,690 So if you want to colorize each pixel here and then that green color value and that and in blue color 158 00:11:26,690 --> 00:11:31,470 value so that you can actually later see how we can colorize our image. 159 00:11:31,760 --> 00:11:37,100 Hopefully it does make sense and if it doesn't make sense don't worry you can actually push the discussion 160 00:11:37,100 --> 00:11:43,100 in the course and all you can always out this tutorial over and over again until it makes sense. 161 00:11:43,400 --> 00:11:45,580 And it's not that hard. 162 00:11:45,590 --> 00:11:46,480 It's so simple. 163 00:11:46,610 --> 00:11:49,630 But make sure to ask questions. 164 00:11:49,640 --> 00:11:53,550 If you if you've got any questions please post or discussion it of course. 165 00:11:53,570 --> 00:12:03,070 So now here now that we actually colorize each pixel now it's time to look at our local bitmap my valuable 166 00:12:03,240 --> 00:12:03,660 here. 167 00:12:03,680 --> 00:12:06,740 We created this valuable inline number 95. 168 00:12:07,190 --> 00:12:16,370 So after colorizing each pixel here I'm going to say look Quilpie is map dot said Peaks of local bitmap 169 00:12:16,370 --> 00:12:17,890 that said pixel. 170 00:12:18,150 --> 00:12:25,010 And now first of all we need to specify the actually read and then for the second argument we need to 171 00:12:25,010 --> 00:12:26,440 specify the height. 172 00:12:26,660 --> 00:12:30,820 And finally you need to specify that pixel color right. 173 00:12:30,890 --> 00:12:32,250 The color of each pixel. 174 00:12:32,270 --> 00:12:33,590 So we have that beat right. 175 00:12:33,590 --> 00:12:40,240 I can't say bitmap with comma bitmap height comma. 176 00:12:40,320 --> 00:12:48,240 Finally we have the pixel color that sits and because the return type of this method is actually bitmap. 177 00:12:48,330 --> 00:12:54,960 We must return a value of type bitmap so I'm going to return this local bitmap from this method. 178 00:12:54,960 --> 00:13:01,740 So after the end in curly brace of this for a loop here and before the end in curly brace of the Smurfette 179 00:13:02,400 --> 00:13:04,320 I'm going to just re type in here. 180 00:13:04,320 --> 00:13:07,980 Return local bitmap semicolon. 181 00:13:08,160 --> 00:13:08,700 So that's it. 182 00:13:08,700 --> 00:13:10,760 Now we have no errors here. 183 00:13:10,770 --> 00:13:12,220 This is our method. 184 00:13:12,300 --> 00:13:14,740 Now it's time to use this method. 185 00:13:14,760 --> 00:13:17,590 It's time to go to the main activity class and use this method. 186 00:13:17,760 --> 00:13:19,190 So it and I thought you we're going to do that.