From 2dca902c183ece31bc0853e1e8b93d09359515e4 Mon Sep 17 00:00:00 2001
From: Matthew Kosarek <matthew@matthewkosarek.xyz>
Date: Sun, 24 Sep 2023 17:14:48 -0400
Subject: Rectangular gradient for the background in AutumnTheme

---
 themes/dist/output.wasm           | Bin 147546 -> 149889 bytes
 themes/src/Renderer2d.cpp         |   8 ++++++++
 themes/src/Renderer2d.h           |   2 ++
 themes/src/autumn/AutumnTheme.cpp |  12 +++++++++++-
 themes/src/autumn/AutumnTheme.hpp |   5 ++++-
 themes/src/shapes_2d.cpp          |  39 ++++++++++++++++++++++++++++++++++++++
 themes/src/shapes_2d.h            |  29 ++++++++++++++++++++++++++++
 7 files changed, 93 insertions(+), 2 deletions(-)
 create mode 100644 themes/src/shapes_2d.cpp
 create mode 100644 themes/src/shapes_2d.h

(limited to 'themes')

diff --git a/themes/dist/output.wasm b/themes/dist/output.wasm
index c5c2a1a..24cbd12 100755
Binary files a/themes/dist/output.wasm and b/themes/dist/output.wasm differ
diff --git a/themes/src/Renderer2d.cpp b/themes/src/Renderer2d.cpp
index 196ef7e..f1d78e3 100644
--- a/themes/src/Renderer2d.cpp
+++ b/themes/src/Renderer2d.cpp
@@ -48,6 +48,14 @@ void Renderer2d::unload() {
 	glDeleteProgram(shader);
 }
 
+f32 Renderer2d::get_width() {
+    return context->width;
+}
+
+f32 Renderer2d::get_height() {
+    return context->height;
+}
+
 
 void Mesh2D::load(Vertex2D* inVertices, u32 inNumVertices, Renderer2d* renderer) {
 	ebo = 0;
diff --git a/themes/src/Renderer2d.h b/themes/src/Renderer2d.h
index 56b79fc..7432894 100644
--- a/themes/src/Renderer2d.h
+++ b/themes/src/Renderer2d.h
@@ -32,6 +32,8 @@ struct Renderer2d {
 	void load(WebglContext* context, const char* vertexShader = NULL, const char* fragmentShader = NULL);
 	void render();
 	void unload();
+    f32 get_width();
+    f32 get_height();
 };
 
 struct Vertex2D {
diff --git a/themes/src/autumn/AutumnTheme.cpp b/themes/src/autumn/AutumnTheme.cpp
index 6e6fe2b..754a841 100644
--- a/themes/src/autumn/AutumnTheme.cpp
+++ b/themes/src/autumn/AutumnTheme.cpp
@@ -1,10 +1,18 @@
 #include "AutumnTheme.hpp"
 #include "../Renderer2d.h"
+#include "../shapes_2d.h"
+#include <memory>
 
 void AutumnTheme::load(Renderer2d* renderer) {
     renderer->clearColor = Vector4(252, 210, 153, 255).toNormalizedColor();
 	auto lr = tree.load(renderer);
 	leafParticles.load(renderer, &lr);
+    background = new RectangularGradient(*renderer,
+                                         Vector4{135, 206, 235, 255}.toNormalizedColor(),
+                                         Vector4(252, 210, 153, 255).toNormalizedColor(),
+                                         renderer->get_width(),
+                                         renderer->get_height(),
+                                         {0, 0});
 }
 
 void AutumnTheme::update(f32 dtSeconds) {
@@ -13,6 +21,7 @@ void AutumnTheme::update(f32 dtSeconds) {
 }
 
 void AutumnTheme::render(Renderer2d* renderer) {
+    background->render();
 	tree.render(renderer);
 	leafParticles.render(renderer);
 }
@@ -20,4 +29,5 @@ void AutumnTheme::render(Renderer2d* renderer) {
 void AutumnTheme::unload()  {
 	tree.unload();
 	leafParticles.unload();
-}
\ No newline at end of file
+    delete background;
+}
diff --git a/themes/src/autumn/AutumnTheme.hpp b/themes/src/autumn/AutumnTheme.hpp
index 18da959..7c1f4f2 100644
--- a/themes/src/autumn/AutumnTheme.hpp
+++ b/themes/src/autumn/AutumnTheme.hpp
@@ -4,12 +4,15 @@
 #include "TreeShape.h"
 #include "LeafParticleRender.h"
 #include "../types.h"
+#include <memory>
 
 struct Renderer2d;
+class RectangularGradient;
 
 struct AutumnTheme {
 	TreeShape tree;
 	LeafParticleRender leafParticles;
+    RectangularGradient* background;
 
 	void load(Renderer2d* renderer);
 	void update(f32 dtSeconds);
@@ -17,4 +20,4 @@ struct AutumnTheme {
 	void unload();
 };
 
-#endif
\ No newline at end of file
+#endif
diff --git a/themes/src/shapes_2d.cpp b/themes/src/shapes_2d.cpp
new file mode 100644
index 0000000..a85e0da
--- /dev/null
+++ b/themes/src/shapes_2d.cpp
@@ -0,0 +1,39 @@
+#include "shapes_2d.h"
+#include "Renderer2d.h"
+#include "mathlib.h"
+
+RectangularGradient::RectangularGradient(Renderer2d& renderer,
+                                         Vector4 top,
+                                         Vector4 bottom,
+                                         f32 width,
+                                         f32 height,
+                                         Vector2 position)
+    : renderer{renderer},
+      top{top},
+      bottom{bottom},
+      width{width},
+      height{height}
+{
+    Vertex2D vertices[6];
+    vertices[0].position = position;
+    vertices[0].color = bottom;
+    vertices[1].position = { position.x + width, position.y };
+    vertices[1].color = bottom;
+    vertices[2].position = { position.x, position.y + height };
+    vertices[2].color = top;
+    vertices[3] = vertices[2];
+    vertices[4] = vertices[1];
+    vertices[5].position = { position.x + width, position.y + height };
+    vertices[5].color = top;
+    mesh.load(vertices, 6, &renderer);
+}
+
+RectangularGradient::~RectangularGradient()
+{
+    mesh.unload();
+}
+
+void RectangularGradient::render()
+{
+    mesh.render(&renderer);
+}
diff --git a/themes/src/shapes_2d.h b/themes/src/shapes_2d.h
new file mode 100644
index 0000000..acb8522
--- /dev/null
+++ b/themes/src/shapes_2d.h
@@ -0,0 +1,29 @@
+#ifndef SHAPES_2D
+#define SHAPES_2D
+
+#include "mathlib.h"
+#include "Renderer2d.h"
+#include "types.h"
+
+class RectangularGradient
+{
+ public:
+    RectangularGradient(Renderer2d& renderer,
+                        Vector4 top,
+                        Vector4 bottom,
+                        f32 width,
+                        f32 height,
+                        Vector2 position);
+    ~RectangularGradient();
+    void render();
+
+ private:
+    Renderer2d& renderer;
+    Vector4 top;
+    Vector4 bottom;
+    f32 width;
+    f32 height;
+    Mesh2D mesh;
+};
+
+#endif
-- 
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