Started messing around with Raylib

Mainly just messing around
2025-01-11 06:35:32 -06:00
parent 916f9cc79b
commit c8e0f08aae
14 changed files with 184 additions and 1583 deletions
@@ -0,0 +1,125 @@
+package ui
+
+import (
+	"image"
+	"image/color"
+
+	rl "github.com/gen2brain/raylib-go/raylib"
+)
+
+// A rectangle with borders.
+// Default only has black borders.
+type Rect struct {
+	x      int32
+	y      int32
+	h      int32
+	w      int32
+	radius int32
+
+	borderWidth int32
+	borderColor color.RGBA
+	fillColor   color.RGBA
+
+	tex *rl.Texture2D
+}
+
+func NewRect(x, y, height, width int32) *Rect {
+	return &Rect{
+		x:           x,
+		y:           y,
+		h:           height,
+		w:           width,
+		radius:      0,
+		borderWidth: 2,
+		borderColor: rl.Black,
+		fillColor:   rl.Blank,
+	}
+}
+
+func (r *Rect) SetPosition(x, y int32) {
+	r.x, r.y = x, y
+}
+
+func (r *Rect) SetSize(h, w int32) {
+	r.h, r.w = h, w
+	r.Unload()
+}
+
+func (r *Rect) SetBorderRadius(radius int32) {
+	r.radius = radius
+	r.Unload()
+}
+
+func (r *Rect) SetBorderWidth(w int32) {
+	r.borderWidth = w
+	r.Unload()
+}
+
+func (r *Rect) SetBorderColor(c color.RGBA) {
+	r.borderColor = c
+	r.Unload()
+}
+
+func (r *Rect) SetFillColor(c color.RGBA) {
+	r.fillColor = c
+	r.Unload()
+}
+
+func (r *Rect) Unload() {
+	if r.tex != nil {
+		rl.UnloadTexture(*r.tex)
+		r.tex = nil
+	}
+}
+
+func (r *Rect) Draw() {
+	if r.tex != nil {
+		rl.DrawTextureEx(*r.tex, rl.NewVector2(float32(r.x), float32(r.y)), 0, 1, rl.White)
+		return
+	}
+	// Create image at 16x resolution then resize down so it looks better
+	img := rl.NewImageFromImage(image.NewAlpha(image.Rect(0, 0, int(r.w*4), int(r.h*4))))
+
+	// Filled areas
+	if r.fillColor != rl.Blank {
+		rl.ImageDrawRectangle(img, 4*r.radius, 0, 4*(r.w-(2*r.radius)), 4*r.h, r.fillColor)
+		if r.radius > 0 {
+			rl.ImageDrawRectangle(img, 4*(r.w-r.radius), 4*r.radius, 4*r.radius, 4*(r.h-(2*r.radius)), r.fillColor)
+			rl.ImageDrawRectangle(img, 0, 4*r.radius, 4*r.radius, 4*(r.h-(2*r.radius)), r.fillColor)
+		}
+	}
+
+	if r.borderColor != rl.Blank {
+		// Horizontal lines
+		rl.ImageDrawRectangle(img, 4*r.radius, 0, 4*(r.w-(2*r.radius)), r.borderWidth*4, r.borderColor)
+		rl.ImageDrawRectangle(img, 4*r.radius, (4*r.h)-(r.borderWidth*4), 4*(r.w-(2*r.radius)), r.borderWidth*4, r.borderColor)
+		// Vertical lines
+		rl.ImageDrawRectangle(img, 0, 4*r.radius, r.borderWidth*4, 4*(r.h-(2*r.radius)), r.borderColor)
+		rl.ImageDrawRectangle(img, (4*r.w)-(4*r.borderWidth), 4*r.radius, r.borderWidth*4, 4*(r.h-(2*r.radius)), r.borderColor)
+	}
+	if r.radius > 0 {
+		r.placeCorners(r.radius, img)
+	}
+
+	rl.ImageResize(img, r.w, r.h)
+	tmp := rl.LoadTextureFromImage(img)
+	r.tex = &tmp
+	rl.DrawTextureEx(*r.tex, rl.NewVector2(float32(r.x), float32(r.y)), 0, 1, r.borderColor)
+}
+
+func (r Rect) placeCorners(radius float32, img *rl.Image) {
+	// Setup corner
+	corner := rl.NewImageFromImage(image.NewAlpha(image.Rect(0, 0, int(radius*4), int(radius*4))))
+	if r.borderWidth > 0 {
+		rl.ImageDrawCircleV(corner, 4*radius, 4*radius, 4*radius, r.borderColor)
+	}
+	rl.ImageDrawCircle(corner, 4*radius, 4*radius, (4*radius)-(4*r.borderWidth), r.fillColor)
+	// Add corners to actual image
+	rl.ImageDraw(img, corner, rl.NewRectangle(0, 0, float32(corner.Width), float32(corner.Height)), rl.NewRectangle(0, 0, float32(corner.Width), float32(corner.Height)), rl.White)
+	rl.ImageRotateCW(corner)
+	rl.ImageDraw(img, corner, rl.NewRectangle(0, 0, float32(corner.Width), float32(corner.Height)), rl.NewRectangle(float32(4*(r.w-radius)), 0, float32(corner.Width), float32(corner.Height)), rl.White)
+	rl.ImageRotateCW(corner)
+	rl.ImageDraw(img, corner, rl.NewRectangle(0, 0, float32(corner.Width), float32(corner.Height)), rl.NewRectangle(float32(4*(r.w-radius)), float32(4*(r.h-radius)), float32(corner.Width), float32(corner.Height)), rl.White)
+	rl.ImageRotateCW(corner)
+	rl.ImageDraw(img, corner, rl.NewRectangle(0, 0, float32(corner.Width), float32(corner.Height)), rl.NewRectangle(0, float32(4*(r.h-radius)), float32(corner.Width), float32(corner.Height)), rl.White)
+}