interaction module

2 files changed, 124 insertions, 0 deletions

diff --git a/Smoke/interact.c b/Smoke/interact.c
new file mode 100644
index 0000000..13e9a6b
--- /dev/null
+++ b/Smoke/interact.c
@@ -0,0 +1,113 @@
+#include <rfftw.h>
+#include "fluids.h"
+
+#include "renderer_gl.h"
+
+#define MOUSE_SMOKE 0
+#define MOUSE_SCALE_MIN 1
+#define MOUSE_SCALE_MAX 2
+#define MOUSE_CLAMP_MIN 3
+#define MOUSE_CLAMP_MAX 4
+
+int prev_mov_mx = 0;
+int prev_mov_my = 0;
+
+float x_rot = 0.0f;
+float y_rot = 0.0f;
+float z_rot = 0.0f;
+
+int prev_rot_mx = 0;
+int prev_rot_my = 0;
+int prev_rot_mz = 0;
+
+
+void mouse_move(int mx, int my)
+{
+  x_pos += (float)(mx - prev_mov_mx);
+  y_pos -= (float)(my - prev_mov_my);
+
+  prev_mov_mx = mx;
+  prev_mov_my = my;
+}
+
+void mouse_rotate(int mx, int my)
+{
+  x_rot -= ((float)(my - prev_rot_my) / 5.0f);
+  y_rot -= ((float)(mx - prev_rot_mx) / 5.0f);
+
+  prev_rot_mx = mx;
+  prev_rot_my = my;
+}
+
+void mouse_roll(int mz)
+{
+  z_rot -= ((float)(mz -prev_rot_mz) / 5.0f);
+
+  prev_rot_mz = mz;
+}
+
+void click(int button, int state, int mx, int my)
+{
+  /* First check wether we are on the top half, or bottom half of the bar, if neither then
+   * the mouseinput is for the smoke
+   */
+  if (!state)
+  {
+    prev_mov_mx = prev_rot_mx = mx;
+    prev_mov_my = prev_rot_my = my;
+    prev_rot_mz = mx;
+  }
+
+  if (my <25) {
+    /* Click received on button bar */
+    float min, max;
+    if (my <13) {
+      /* Upper half */
+      /* check wether mx is min or max slider */
+      min = colormap_get_scale_min();
+      max = colormap_get_scale_max();
+      if (mx <(rescale_to_winwidth(min +((max - min) /2)))) {
+        active_slider = MOUSE_SCALE_MIN;
+      } else if (mx >(rescale_to_winwidth(max -((max - min) /2)))) {
+        active_slider = MOUSE_SCALE_MAX;
+      }
+    } else {
+      /* Bottom half */
+      min = colormap_get_clamp_min();
+      max = colormap_get_clamp_max();
+      /* check wether mx is min or max slider */
+      if (mx <(rescale_to_winwidth(min +((max - min) /2)))) {
+        active_slider = MOUSE_CLAMP_MIN;
+      } else if (mx >(rescale_to_winwidth(max -((max - min) /2)))) {
+        active_slider = MOUSE_CLAMP_MAX;
+      }
+    }
+	}
+}
+
+// drag: When the user drags with the mouse, add a force that corresponds to the direction of the mouse
+//       cursor movement. Also inject some new matter into the field at the mouse location.
+void drag(int mx, int my)
+{
+		if (my > 25) {
+      fluids_insert_smoke(mx, my);
+		} else {
+			switch (active_slider) {
+				case MOUSE_SCALE_MIN:
+          colormap_set_scale_min((float)mx /winWidth);
+					break;
+				case MOUSE_SCALE_MAX:
+				  colormap_set_scale_max((float)mx /winWidth);
+					break;
+				case MOUSE_CLAMP_MIN:
+					colormap_set_clamp_min((float)mx /winWidth);
+					break;
+				case MOUSE_CLAMP_MAX:
+					colormap_set_clamp_max((float)mx /winWidth);
+					break;
+				case MOUSE_SMOKE:
+				default:
+					break;
+			}
+	 }
+}
diff --git a/Smoke/interact.h b/Smoke/interact.h
new file mode 100644
index 0000000..404a13c
--- /dev/null
+++ b/Smoke/interact.h
@@ -0,0 +1,11 @@
+#ifndef _INTERACT_H
+#define _INTERACT_H
+
+void mouse_move(int mx, int my);
+void mouse_rotate(int mx, int my);
+void mouse_roll(int mz);
+
+void click(int button, int state, int mx, int my);
+void drag(int mx, int my);
+
+#endif