+bitmap

1 files changed, 96 insertions, 0 deletions

diff --git a/src/libjin/Graphics/Bitmap.cpp b/src/libjin/Graphics/Bitmap.cpp
new file mode 100644
index 0000000..93ea1a9
--- /dev/null
+++ b/src/libjin/Graphics/Bitmap.cpp
@@ -0,0 +1,96 @@
+#include "Bitmap.h"
+#include "../3rdparty/stb/stb_image.h"
+#include "../Math/math.h"
+
+using namespace jin::math;
+
+namespace jin
+{
+namespace graphics
+{
+
+    /*static*/ Bitmap* Bitmap::createBitmap(const void* imgData, size_t size)
+    {
+        if (imgData == nullptr)
+            return nullptr; 
+        int w, h;
+        void* data = stbi_load_from_memory((unsigned char *)imgData, size, &w, &h, NULL, STBI_rgb_alpha);
+        if (data == nullptr)
+            return nullptr;
+        Bitmap* bitmap = new Bitmap();
+        bitmap->pixels = (Color*)data; 
+        bitmap->width = w; 
+        bitmap->height = h;
+        return bitmap;
+    }
+
+    /*static*/ Bitmap* Bitmap::createBitmap(int w, int h)
+    {
+        Bitmap* bitmap = new Bitmap(w, h);
+        return bitmap;
+    }
+
+    Bitmap::Bitmap()
+        : width(0)
+        , height(0)
+        , pixels(nullptr)
+    {
+    }
+
+    Bitmap::Bitmap(int w, int h)
+    {
+        width = w; 
+        height = h; 
+        pixels = (Color*)calloc(1, w*h*sizeof(Color));
+    }
+
+    Bitmap::~Bitmap()
+    {
+        stbi_image_free(pixels);
+    }
+
+    void Bitmap::bindPixels(Color* p, int w, int h)
+    {
+        if (pixels != nullptr)
+            delete[] pixels;
+        pixels = p;
+        width = w; 
+        height = h;
+    }
+
+    void Bitmap::setPixels(Color* p, int w, int h)
+    {
+        if (pixels != nullptr)
+            delete[] pixels; 
+        size_t s = w * h * sizeof(Color);
+        pixels = (Color*)calloc(1, s);
+        memcpy(pixels, p, s);
+        width = w; 
+        height = h;
+    }
+
+    void Bitmap::setPixel(const Color& pixel, int x, int y)
+    {
+        if (pixels == nullptr)
+            return;
+        if (without<int>(x, 0, width - 1) || without<int>(y, 0, height - 1))
+            return;
+        pixels[x + y * width] = pixel;
+    }
+    
+    Color Bitmap::getPixel(int x, int y)
+    {
+        if (pixels == nullptr)
+            return Color::BLACK;
+        if (without<int>(x, 0, width - 1) || without<int>(y, 0, height - 1))
+            return Color::BLACK;
+        return pixels[x + y * width];
+    }
+    
+    const Color* Bitmap::getPixels()
+    {
+        return pixels;
+    }
+
+}
+}
\ No newline at end of file