78 lines
2 KiB
Go
78 lines
2 KiB
Go
package main
|
|
|
|
import (
|
|
rl "github.com/gen2brain/raylib-go/raylib"
|
|
)
|
|
|
|
var (
|
|
mouseScaleMarkSize = float32(12)
|
|
rec = rl.NewRectangle(100, 100, 200, 80)
|
|
mouseScaleReady, MouseScaleMode = false, false
|
|
)
|
|
|
|
func main() {
|
|
screenWidth := int32(1280)
|
|
screenHeight := int32(720)
|
|
|
|
rl.InitWindow(screenWidth, screenHeight, "raylib [shapes] example - rectangle scaling mouse")
|
|
|
|
rl.SetTargetFPS(60)
|
|
|
|
rl.SetMousePosition(0, 0)
|
|
|
|
for !rl.WindowShouldClose() {
|
|
|
|
mousePos := rl.GetMousePosition()
|
|
|
|
if rl.CheckCollisionPointRec(mousePos, rl.NewRectangle(rec.X+rec.Width-mouseScaleMarkSize, rec.Y+rec.Height-mouseScaleMarkSize, mouseScaleMarkSize, mouseScaleMarkSize)) {
|
|
mouseScaleReady = true
|
|
if rl.IsMouseButtonPressed(rl.MouseLeftButton) {
|
|
MouseScaleMode = true
|
|
}
|
|
} else {
|
|
mouseScaleReady = false
|
|
}
|
|
|
|
if MouseScaleMode {
|
|
|
|
mouseScaleReady = true
|
|
rec.Width = mousePos.X - rec.X
|
|
rec.Height = mousePos.Y - rec.Y
|
|
|
|
// CHECK MIN MAX REC SIZES
|
|
if rec.Width < mouseScaleMarkSize {
|
|
rec.Width = rec.Width
|
|
}
|
|
if rec.Height < mouseScaleMarkSize {
|
|
rec.Height = rec.Width
|
|
}
|
|
if rec.Width > (float32(rl.GetScreenWidth()) - rec.X) {
|
|
rec.Width = float32(rl.GetScreenWidth()) - rec.X
|
|
}
|
|
if rec.Height > (float32(rl.GetScreenHeight()) - rec.Y) {
|
|
rec.Height = float32(rl.GetScreenHeight()) - rec.Y
|
|
}
|
|
if rl.IsMouseButtonReleased(rl.MouseLeftButton) {
|
|
MouseScaleMode = false
|
|
}
|
|
|
|
}
|
|
|
|
rl.BeginDrawing()
|
|
rl.ClearBackground(rl.RayWhite)
|
|
|
|
rl.DrawText("Scale rectangle dragging from bottom-right corner!", 10, 10, 20, rl.Black)
|
|
|
|
rl.DrawRectangleRec(rec, rl.Fade(rl.Green, 0.5))
|
|
|
|
if mouseScaleReady {
|
|
rl.DrawRectangleLinesEx(rec, 1, rl.Red)
|
|
rl.DrawTriangle(rl.NewVector2(rec.X+rec.Width-mouseScaleMarkSize, rec.Y+rec.Height), rl.NewVector2(rec.X+rec.Width, rec.Y+rec.Height), rl.NewVector2(rec.X+rec.Width, rec.Y+rec.Height-mouseScaleMarkSize), rl.Red)
|
|
}
|
|
|
|
rl.EndDrawing()
|
|
|
|
}
|
|
|
|
rl.CloseWindow()
|
|
}
|