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-rw-r--r--src/render.c72
1 files changed, 72 insertions, 0 deletions
diff --git a/src/render.c b/src/render.c
new file mode 100644
index 0000000..e06c967
--- /dev/null
+++ b/src/render.c
@@ -0,0 +1,72 @@
+/*
+ * render.c
+ *
+ * Created on: 15.01.2018
+ * Author: Superleo1810
+ */
+
+#include "render.h"
+
+void render_init(Config *config, u32 (*sfunc) (double, double, u32))
+{
+ _config = config;
+ _sfunc = sfunc;
+
+ ui_render.window = GTK_WINDOW(gtk_window_new(GTK_WINDOW_TOPLEVEL));
+ gtk_window_set_default_size(ui_render.window, config->width, config->height);
+
+ ui_render.frame = GTK_FRAME(gtk_frame_new(NULL));
+ gtk_container_add(GTK_CONTAINER(ui_render.window), ui_render.frame);
+
+ ui_render.drawing_area = GTK_DRAWING_AREA(gtk_drawing_area_new());
+ gtk_widget_set_size_request(GTK_WIDGET(ui_render.drawing_area), config->width, config->height);
+ g_signal_connect(G_OBJECT(ui_render.drawing_area), "draw", G_CALLBACK(on_draw), NULL);
+ gtk_container_add(GTK_CONTAINER(ui_render.frame), ui_render.drawing_area);
+
+}
+
+void render_show()
+{
+ gtk_widget_show_all(GTK_WIDGET(ui_render.window));
+}
+
+void on_draw(GtkWidget *widget, cairo_t *cr, gpointer data)
+{
+ cairo_surface_t *image;
+ // TODO: MUSS UNBEDINGT SEPARAT GECALLT WERDEN, SONST KEINE 60 FPS
+ image = render_surface();
+ cairo_set_source_surface(cr, image, 0, 0);
+ cairo_paint(cr);
+}
+
+cairo_surface_t *render_surface()
+{
+ cairo_surface_t *result;
+ unsigned char *current_row;
+ int stride;
+ double x_math, y_math;
+ u32 iterations;
+
+ result = cairo_image_surface_create(CAIRO_FORMAT_RGB24, _config->width, _config->height);
+ if (cairo_surface_status(result) != CAIRO_STATUS_SUCCESS)
+ return result;
+
+ cairo_surface_flush(result);
+ current_row = cairo_image_surface_get_data(result);
+ stride = cairo_image_surface_get_stride(result);
+ for (int y = 0; y < _config->height; y++) {
+ u32 *row = (void *) current_row;
+ for (int x = 0; x < _config->width; x++) {
+ x_math = /*x_MIN*/-2.0 + ((double) x * (/*x_MAX*/1.0 - /*x_MIN*/-2.0)) / _config->width;
+ y_math = /*y_MIN*/-1.0 + ((double) (_config->height - y) * (/*y_MAX*/1.0 - /*y_MIN*/-1.0)) / _config->height;
+ iterations = _sfunc(x_math, y_math, _config->iterations);
+ row[x] = (((1<<24)-1)*iterations)/_config->iterations;
+// if (iterations > 1<<8)
+// printf("schon gruen\n");
+ }
+
+ current_row += stride;
+ }
+ cairo_surface_mark_dirty(result);
+ return result;
+}