*去掉文件前缀je_

1 files changed, 78 insertions, 0 deletions

diff --git a/src/libjin/graphics/mesh.cpp b/src/libjin/graphics/mesh.cpp
new file mode 100644
index 0000000..71ebf62
--- /dev/null
+++ b/src/libjin/graphics/mesh.cpp
@@ -0,0 +1,78 @@
+#include "../math/math.h"
+
+#include "mesh.h"
+#include "shaders/shader.h"
+
+using namespace JinEngine::Math;
+using namespace JinEngine::Graphics::Shaders;
+
+namespace JinEngine
+{
+    namespace Graphics
+    {
+
+        Mesh::Mesh()
+            : mGraphic(nullptr)
+        {
+        }
+
+        void Mesh::setGraphic(const Graphic* graphic)
+        {
+            mGraphic = graphic;
+        }
+
+        void Mesh::pushVertex(float x, float y, float u, float v, Color color)
+        {
+            Vertex vert;
+            vert.xy.x() = x; vert.xy.y() = y;
+            vert.uv.u() = u; vert.uv.v() = v;
+            vert.color = color;
+            pushVertex(vert);
+        }
+
+        void Mesh::pushVertex(const Vertex& vert)
+        {
+            mVertices.push_back(vert);
+            // Update bound
+            if (mVertices.size() == 2)
+            {
+                const Vertex& v0 = mVertices[0];
+                mBound.l = min(v0.xy.x(), vert.xy.x());
+                mBound.r = max(v0.xy.x(), vert.xy.x());
+                mBound.t = min(v0.xy.y(), vert.xy.y());
+                mBound.b = max(v0.xy.y(), vert.xy.y());
+            }
+            else
+            {
+                float x = vert.xy.x(), y = vert.xy.y();
+                mBound.l = x < mBound.l ? x : mBound.l;
+                mBound.r = x > mBound.r ? x : mBound.r;
+                mBound.t = y < mBound.t ? y : mBound.t;
+                mBound.b = y > mBound.b ? y : mBound.b;
+            }
+        }
+
+        void Mesh::render(float x, float y, float sx, float sy, float r, float ox, float oy) const
+        {
+            if (mGraphic == nullptr || mVertices.size() == 0)
+                return;
+
+            Math::Matrix modelViewMatrix = gl.getModelViewMatrix(x, y, sx, sy, r, ox, oy);
+
+            Shader* shader = gl.getShader();
+            shader->begin()
+                .sendMatrix4(SHADER_MODELVIEW_MATRIX, &modelViewMatrix)
+                .sendMatrix4(SHADER_PROJECTION_MATRIX, &gl.getProjectionMatrix())
+                .uploadVertices(2, GL_FLOAT, sizeof(Vertex), &(mVertices[0].xy))
+                .uploadUV(2, GL_FLOAT, sizeof(Vertex), &(mVertices[0].uv))
+                .uploadColor(4, GL_UNSIGNED_BYTE, sizeof(Vertex), &(mVertices[0].color), GL_TRUE);
+
+            gl.bindTexture2D(mGraphic->getGLTexture());
+            gl.drawArrays(GL_POLYGON, 0, mVertices.size());
+            
+
+            shader->end();
+        };
+
+    } // namespace Graphics
+} // namespace JinEngine
\ No newline at end of file