package
com.geeksforgeeks.linepattern
import
android.os.Bundle
import
androidx.activity.ComponentActivity
import
androidx.activity.compose.setContent
import
androidx.compose.foundation.Canvas
import
androidx.compose.foundation.border
import
androidx.compose.foundation.layout.*
import
androidx.compose.foundation.shape.CircleShape
import
androidx.compose.material.*
import
androidx.compose.ui.Alignment
import
androidx.compose.ui.Modifier
import
androidx.compose.ui.draw.clip
import
androidx.compose.ui.geometry.Offset
import
androidx.compose.ui.geometry.Rect
import
androidx.compose.ui.geometry.Size
import
androidx.compose.ui.graphics.Color
import
androidx.compose.ui.graphics.drawscope.rotate
import
androidx.compose.ui.unit.dp
import
kotlin.math.roundToInt
class
MainActivity : ComponentActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super
.onCreate(savedInstanceState)
setContent {
Scaffold(
topBar = { TopAppBar(title = { Text(
"GFG | Line Pattern"
, color = Color.White) }, backgroundColor = Color(
0xff0f9d58
)) },
content = {
Column(Modifier.fillMaxSize(), horizontalAlignment = Alignment.CenterHorizontally, verticalArrangement = Arrangement.Center) {
Canvas(
Modifier
.padding(
10
.dp)
.height(
30
.dp)
.fillMaxWidth()
.clip(CircleShape)
) {
val step =
10
.dp
val angleDegrees = 45f
val stepPx = step.toPx()
val stepsCount = (size.width / stepPx).roundToInt()
val actualStep = size.width / stepsCount
val dotSize = Size(width = actualStep /
2
, height = size.height *
2
)
for
(i in -
1
..stepsCount) {
val rect = Rect(
offset = Offset(x = i * actualStep, y = (size.height - dotSize.height) /
2
),
size = dotSize,
)
rotate(angleDegrees, pivot = rect.center) {
drawRect(
Color.Blue,
topLeft = rect.topLeft,
size = rect.size,
)
}
}
}
}
}
)
}
}
}