Configurable animations based on points
Grav is a library for android which allow you to make multiple animations based on points.
The library is composed of generators, each generator takes care of one thing. Composing different generators you can obtain different results.
There are different kind of generators:
The point generator is the class that creates the locations of the points that will be drawn using a Grav Generator. In order to use it you need to set the attribute:
app:pointGenerator="classname"The first thing you need is a Point generator, the are 3 generators available:
Generate points based on a cell and a variance.
app:pointGenerator="com.github.glomadrian.grav.generator.point.RegularPointGenerator"
app:regular_cell_size="200"
app:regular_variance="20"(Using in combination with GravBallGeneartor)
Generate points based on a cell and a variance in a circular shape.
app:pointGenerator="com.github.glomadrian.grav.generator.point.CircularPointGenerator"
app:regular_cell_size="200"
app:regular_variance="200"(Using in combination with GravBallGeneartor)
Generate the points based on percent locations array.
app:pointGenerator="com.github.glomadrian.grav.generator.point.PercentPointGenerator"
app:percent_points_array="@array/walla_points_percent_points"Inside arrays.xml each pair of items represents a point in the view, which is defined by a width percent and a height percent.
<integer-array name="sample_points_percent_points">
<item>10</item>
<item>60</item>
<item>8</item>
<item>30</item>
<item>25</item>
<item>10</item>
</integer-array>(Using in combination with GravBallGeneartor)
Grav generator is the piece in charge of draw every point previously generated. To use you need to set the attribute:
app:gravGenerator="classname"There are two Grav Generator available
Draws a ball.
Ball sizes can be generated randomly within a range using the following attributes:
app:gravGenerator="com.github.glomadrian.grav.generator.grav.BallGenerator"
app:ball_from_size="3dp"
app:ball_to_size="16dp"Draws rectangles.
Size of the rectangles can be changed using the following attributes:
app:gravGenerator="com.github.glomadrian.grav.generator.grav.RectangleGenerator"
app:rectangle_width="15dp"
app:rectangle_height="10dp"Decides how the Grav is painted.
To use you need to set the attribute:
appcolorGenerator="classname"There are two Color Generator available.
Paint in one single color.
app:colorGenerator="com.github.glomadrian.grav.generator.paint.SingleColorGenerator"
app:single_color="@color/colorPrimary"Paint using array of colors
app:colorGenerator="com.github.glomadrian.grav.generator.paint.ArrayColorGenerator"
app:array_colors="@array/Spectral"The animation generator takes care of the position, size and properties animation. The animation generator can be one or an array of animation generators.
To use you need to set the attribute:
app:animationGenerator="classname"To use you need to set the attribute:
app:animationGenerators="@array/array_reference"
<string-array name="array_reference">
<item>com.github.glomadrian.grav.generator.animation.PathAnimator</item>
<item>com.github.glomadrian.grav.generator.animation.BallSizeAnimator</item>
</string-array>Moves the Grav within a range of values.
app:animationGenerator=" com.github.glomadrian.grav.generator.animation.ShakeAnimator"
//Min animation duration
app:shake_min_duration="1000"
//Max animation duration
app:shake_max_duration="3000"
//Direction horizontal or vertical
app:shake_direction="horizontal"
//The size of the movement
app:shake_variance="15dp"Aniamtes the translation of the Grav to a different side.
app:animationGenerator="com.github.glomadrian.grav.generator.animation.SideToSideAnimator"
//Min animation duration
app:side_to_side_min_duration="1000"
//Max animation duration
app:side_to_side_max_duration="3000"
//Direction leftToRight | rightToLeft | upToDown | downToUp
app:side_to_side_direction="leftToRight"Also you can use a interpolator.
side_to_side_interpolator="interpolator class"Applies an alpha animation to a Grav.
app:animationGenerator="com.github.glomadrian.grav.generator.animation.AlphaAnimator"
//Min animation duration
app:alpha_min_duration="1000"
//Max animation duration
app:alpha_max_duration="3000"
//From and to in a range (0-255)
app:alpha_from="0"
app:alpha_to="255"Animates the size of the ball.
app:animationGenerator="com.github.glomadrian.grav.generator.animation.BallSizeAnimator"
//Min animation duration
app:ball_size_min_duration="1000"
//Max animation duration
app:ball_size_max_duration="3000"
app:ball_size_from_size="3dp"
app:ball_size_to_size="8dp"The path animator moves the grav following a path.
<string name="circle">
M527.023,71.8233 C780.213,71.8233,985.464,277.075,985.464,530.265
C985.464,783.455,780.213,988.707,527.023,988.707
C273.832,988.707,68.5809,783.455,68.5809,530.265
C68.5809,277.075,273.832,71.8233,527.023,71.8233 Z
</string>
<integer name="circle_original_width">1062</integer>
<integer name="circle_original_height">1062</integer>app:animationGenerator="com.github.glomadrian.grav.generator.animation.PathAnimator"
//Variance is the random margin given to the grav
app:path_variance_from="1dp"
app:path_variance_to="20dp"
//Min animation duration
app:path_min_duration="2000"
//Max animation duration
app:path_max_duration="2300"
//String that define the path
app:path="@string/circle"
app:path_original_width="@integer/circle_original_width"
app:path_original_height="@integer/circle_original_height"The full samples can be found in the demo app source code.
…………Add repository
repositories {
maven {
url "http://dl.bintray.com/glomadrian/maven"
}
}Add dependency
compile 'com.github.glomadrian:Grav:1.1'Adrián García Lomas - [email protected]
Copyright 2017 Adrián García Lomas
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
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