1 files changed, 97 insertions, 0 deletions

diff --git a/src/libjin/render/image.cpp b/src/libjin/render/image.cpp
new file mode 100644
index 0000000..ac5947a
--- /dev/null
+++ b/src/libjin/render/image.cpp
@@ -0,0 +1,97 @@
+#include "image.h"
+#include "3rdparty/stb/stb_image.h"
+#include "utils/utils.h"
+namespace jin
+{
+namespace render
+{
+    Image::Image(): Drawable(), pixels(0)
+    {
+    }
+
+    Image::~Image()
+    {
+        stbi_image_free(pixels);
+    }
+
+    void Image::init()
+    {
+        Drawable::init();
+        pixels  = 0; 
+    }
+
+    color Image::getPixel(int x, int y)
+    {
+		if (without(x, 0, width) || without(y, 0, height))
+		{
+			return { 0 };
+		}
+        return pixels[x + y * width];
+    }
+    
+    bool Image::loadf(const char* f)
+    {
+        unsigned char* imageData = stbi_load(f, &width, &height, NULL, STBI_rgb_alpha);
+        if (imageData == 0) return false; 
+        pixels = (color*)imageData; 
+
+        glGenTextures(1, &texture);
+        glBindTexture(GL_TEXTURE_2D, texture);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width,
+            height, 0, GL_RGBA, GL_UNSIGNED_BYTE, imageData);
+
+        // set render vertices 
+        Drawable::setVertices(
+            new float [DRAWABLE_V_SIZE] {
+                0, 0,
+                0, (float)height,
+                (float)width, (float)height,
+                (float)width, 0,
+            },
+            new float [DRAWABLE_V_SIZE] {
+                0, 0,
+                0, 1,
+                1, 1,
+                1, 0
+            }
+        );
+
+        return true;
+    }
+
+    bool Image::loadb(const char* b, int size)
+    {
+        // ʹ��stbi_load_from_memory���
+        unsigned char* imageData = stbi_load_from_memory((unsigned char *)b, size, &width, &height, NULL, STBI_rgb_alpha);
+        if (imageData == 0) return false;
+        pixels = (color*)imageData;
+
+        glGenTextures(1, &texture);
+        glBindTexture(GL_TEXTURE_2D, texture);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width,
+            height, 0, GL_RGBA, GL_UNSIGNED_BYTE, imageData);
+
+        // set render vertices 
+        Drawable::setVertices(
+            new float [DRAWABLE_V_SIZE] {
+            0, 0,
+                0, (float)height,
+                (float)width, (float)height,
+                (float)width, 0,
+        },
+            new float [DRAWABLE_V_SIZE] {
+                0, 0,
+                    0, 1,
+                    1, 1,
+                    1, 0
+            }
+            );
+
+        return true; 
+    }
+}
+}
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