do round rectangles

1 files changed, 63 insertions, 5 deletions

diff --git a/src/main/java/io/polyfrost/oneconfig/renderer/Renderer.java b/src/main/java/io/polyfrost/oneconfig/renderer/Renderer.java
index 313a1d0..235371f 100644
--- a/src/main/java/io/polyfrost/oneconfig/renderer/Renderer.java
+++ b/src/main/java/io/polyfrost/oneconfig/renderer/Renderer.java
@@ -4,9 +4,13 @@ import net.minecraft.client.Minecraft;
 import net.minecraft.client.gui.FontRenderer;
 import net.minecraft.client.gui.Gui;
 import net.minecraft.client.renderer.GlStateManager;
+import net.minecraft.client.renderer.Tessellator;
+import net.minecraft.client.renderer.WorldRenderer;
+import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
 import net.minecraft.util.ResourceLocation;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
+import org.lwjgl.opengl.GL11;
 
 import java.awt.*;
 
@@ -14,6 +18,9 @@ public class Renderer extends Gui {
     public static final Logger renderLog = LogManager.getLogger("OneConfig Renderer");
     private static final Minecraft mc = Minecraft.getMinecraft();
     private static final FontRenderer fr = mc.fontRendererObj;
+    private static Tessellator tessellator = Tessellator.getInstance();
+    private static WorldRenderer worldRenderer = tessellator.getWorldRenderer();
+
 
     public static void drawRectangle(int left, int top, int right, int bottom, int color) {
         Gui.drawRect(left, top, right, bottom, color);
@@ -33,8 +40,54 @@ public class Renderer extends Gui {
         Gui.drawScaledCustomSizeModalRect(x, y, 0, 0, targetX, targetY, targetX, targetY, targetX, targetY);
     }
 
-    public static void drawRoundRectangle(int left, int top, int right, int bottom, int cornerRadius, int color) {
+    public static void drawRegularPolygon(double x, double y, int radius, int sides, int color, double lowerAngle, double upperAngle) {
+        float f3 = (float) (color >> 24 & 255) / 255.0F;
+        float f = (float) (color >> 16 & 255) / 255.0F;
+        float f1 = (float) (color >> 8 & 255) / 255.0F;
+        float f2 = (float) (color & 255) / 255.0F;
+
+        GL11.glDisable(GL11.GL_TEXTURE_2D);
+        GlStateManager.color(f, f1, f2, f3);
+        GlStateManager.enableBlend();
+        GlStateManager.disableAlpha();
+        worldRenderer.begin(GL11.GL_POLYGON, DefaultVertexFormats.POSITION);
+        worldRenderer.pos(x, y, 0).endVertex();
+        GL11.glHint(GL11.GL_POLYGON_SMOOTH_HINT, GL11.GL_NICEST);
+        GL11.glEnable(GL11.GL_POLYGON_SMOOTH);
+        GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE);
+
+        for (int i = 0; i <= sides; i++) {
+            double angle = ((Math.PI * 2) * i / sides) + Math.toRadians(180);
+            if (angle > lowerAngle && angle < upperAngle) {            // >0 <4.75; >4.7 <6.3; >6.25 <7.9; >7.8 <10 80 side mode
+                worldRenderer.pos(x + Math.sin(angle) * radius, y + Math.cos(angle) * radius, 0).endVertex();
+            }
+        }
+        tessellator.draw();
+        GlStateManager.disableBlend();
+        GL11.glDisable(GL11.GL_POLYGON_SMOOTH);
+        GL11.glEnable(GL11.GL_TEXTURE_2D);
+    }
+
+    public static void drawRegularPolygon(double x, double y, int radius, int sides, int color) {
+        drawRegularPolygon(x, y, radius, sides, color, 0d, 10d);
+    }
 
+    /**
+     * Draw a round rectangle at the given coordinates.
+     * @param radius radius of the corners
+     * @param color color as a rgba integer
+     */
+    public static void drawRoundRect(double x, double y, double width, double height, int radius, int color) {
+        GL11.glEnable(GL11.GL_BLEND);
+        GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE);
+        Gui.drawRect((int) x + radius, (int) y, (int) (x + width - radius), (int) (y + radius), color);                          // top
+        Gui.drawRect((int) x + radius, (int) (y + height - radius), (int) (x + width - radius), (int) (y + height), color);      // bottom
+        Gui.drawRect((int) x, (int) y + radius, (int) (x + width), (int) (y + height - radius), color);                          // main
+        drawRegularPolygon(x + radius, y + radius, radius, 80, color, 0d, 4.75d);                    // top left
+        drawRegularPolygon(x + width - radius, y + radius, radius, 80, color, 7.8d, 10d);            // top right
+        drawRegularPolygon(x + radius, y + height - radius, radius, 80, color, 4.7d, 6.3d);          // bottom left
+        drawRegularPolygon(x + width - radius, y + height - radius, radius, 80, color, 6.25d, 7.9d); // bottom right
+        GL11.glDisable(GL11.GL_BLEND);
     }
 
     public static float clamp(float number) {
@@ -49,11 +102,16 @@ public class Renderer extends Gui {
         }
     }
 
+    /**
+     * Return a java.awt.Color object from the given Integer.
+     *
+     * @param color rgba color, parsed into an integer
+     */
     public static Color getColorFromInt(int color) {
-        float f = (float)(color >> 16 & 255) / 255.0F;
-        float f1 = (float)(color >> 8 & 255) / 255.0F;
-        float f2 = (float)(color & 255) / 255.0F;
-        float f3 = (float)(color >> 24 & 255) / 255.0F;
+        float f = (float) (color >> 16 & 255) / 255.0F;
+        float f1 = (float) (color >> 8 & 255) / 255.0F;
+        float f2 = (float) (color & 255) / 255.0F;
+        float f3 = (float) (color >> 24 & 255) / 255.0F;
         return new Color(f, f1, f2, f3);
     }