From b4c035e2ff6053e37734a7f19fb7825a19160f3a Mon Sep 17 00:00:00 2001
From: faiface <faiface@ksp.sk>
Date: Wed, 11 Jan 2017 13:16:27 +0100
Subject: [PATCH] add TrianglesContainer interface
---
graphics.go | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/graphics.go b/graphics.go
index bfcc5aa..9e7de07 100644
--- a/graphics.go
+++ b/graphics.go
@@ -5,6 +5,15 @@ import (
"image/color"
)
+// TrianglesContainer is an extension of Triangles that can accumulate Triangles inside of it using
+// the Append method.
+type TrianglesContainer interface {
+ Triangles
+
+ // Append adds supplied Triangles to the end of the TrianglesContainer.
+ Append(Triangles)
+}
+
// TrianglesData specifies a list of Triangles vertices with three common properties: Position,
// Color and Texture.
type TrianglesData []struct {
@@ -72,6 +81,13 @@ func (td *TrianglesData) Update(t Triangles) {
}
}
+// Append adds supplied Triangles to the end of the TrianglesData.
+func (td *TrianglesData) Append(t Triangles) {
+ newTd := make(TrianglesData, t.Len())
+ newTd.Update(t)
+ *td = append(*td, newTd...)
+}
+
// Position returns the position property of i-th vertex.
func (td *TrianglesData) Position(i int) Vec {
return (*td)[i].Position
@@ -105,6 +121,11 @@ func (td *TrianglesColorData) Update(t Triangles) {
(*TrianglesData)(td).Update(t)
}
+// Append adds supplied Triangles to the end of the TrianglesColorData.
+func (td *TrianglesColorData) Append(t Triangles) {
+ (*TrianglesData)(td).Append(t)
+}
+
// Position returns the position property of i-th vertex.
func (td *TrianglesColorData) Position(i int) Vec {
return (*TrianglesData)(td).Position(i)
@@ -133,6 +154,11 @@ func (td *TrianglesTextureData) Update(t Triangles) {
(*TrianglesData)(td).Update(t)
}
+// Append adds supplied Triangles to the end of the TrianglesTextureData.
+func (td *TrianglesTextureData) Append(t Triangles) {
+ (*TrianglesData)(td).Append(t)
+}
+
// Position returns the position property of i-th vertex.
func (td *TrianglesTextureData) Position(i int) Vec {
return (*TrianglesData)(td).Position(i)
--
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