*camera

1 files changed, 79 insertions, 8 deletions

diff --git a/src/extend/camera.c b/src/extend/camera.c
index 377a09e..f349006 100644
--- a/src/extend/camera.c
+++ b/src/extend/camera.c
@@ -1,16 +1,31 @@
 #include "camera.h"
 
-void camera_init(Camera* cam) {
+// A unity editor style camera
+
+void camera_init(Camera* cam, wog_Window* wnd) {
 	cam->is_viewdirty = cam->is_projdirty = TRUE;
+
+	// camera local = world
 	cam->transform.parent = NULL ;
 	cam->transform.localposition = vec3_make(0, 0, 800);
 	cam->transform.localscale = vec3_make(1, 1, 1);
 	cam->transform.localrotation = quat_make(0, 0, 0);
+
 	cam->near = 1; 
-	cam->far = 1500;
+	cam->far = 5500;
 	cam->aspect = 600/500.f;
-	cam->fov = 90;
-	cam->zoom_speed = 20;
+	cam->fov = 60;
+	cam->zoom_speed = 4000;
+
+	cam->look_around = FALSE;
+	cam->move_around = FALSE;
+	cam->rotate_sensitivity.x = 5;
+	cam->rotate_sensitivity.y = 5;
+	cam->move_sensitivity.x = 150;
+	cam->move_sensitivity.y = 100;
+	cam->euler.yaw = cam->euler.pitch = cam->euler.roll = 0;
+
+	cam->wnd = wnd;
 }
 
 void camera_getmatrix(Camera* cam, Mat4* view, Mat4* proj) {
@@ -38,18 +53,74 @@ void camera_getprojmatrix(Camera* cam, Mat4* out) {
 	cam->is_projdirty = FALSE;
 }
 
-static void _onwheelscroll(Camera* cam, int wheel) {
+static void _onwheelscroll(Camera* cam, int wheel, float dt) {
 	Quat rot; transform_getrotation(&cam->transform, &rot);
 	Vec3 forward = {0,0,-1};
 	quat_applytovec3(&rot, &forward, &forward);
-	vec3_scale(&forward, cam->zoom_speed * wheel, &forward);
+	vec3_scale(&forward, cam->zoom_speed * wheel * dt, &forward);
 	vec3_plus(&forward, &cam->transform.localposition, &cam->transform.localposition);
 	cam->is_viewdirty = TRUE;
 }
 
-void camera_onevent(Camera* cam, wog_Event* e) {
+static void _onlookaround(Camera* cam,float dt) {
+	if(!cam->look_around) return;
+	static Quat rot;
+	static Euler angle;
+	int x, y; 
+	wog_getMouse(cam->wnd, &x, &y);
+	float dx = cam->mouse_prev.x - x, dy = y - cam->mouse_prev.y;
+	angle.x = dy * cam->rotate_sensitivity.y * dt;
+	angle.y = dx * cam->rotate_sensitivity.x * dt;
+	cam->euler.pitch += angle.x;
+	cam->euler.yaw += angle.y;
+	//printf("%f    %f\n", cam->euler.pitch, cam->euler.yaw);
+	quat_fromeuler(&cam->euler, &cam->transform.localrotation);
+	cam->mouse_prev.x = x; cam->mouse_prev.y = y;
+	cam->is_viewdirty = TRUE;
+}
+
+static void _onmovearound(Camera* cam, float dt) {
+	if(!cam->move_around) return ;	
+	int x, y;
+	wog_getMouse(cam->wnd, &x, &y);
+	Vec3 dd = { cam->mouse_prev.x - x, y - cam->mouse_prev.y , 0};
+	dd.x *= cam->move_sensitivity.x * dt;
+	dd.y *= cam->move_sensitivity.y * dt;
+	quat_applytovec3(&cam->transform.localrotation, &dd, &dd);
+	//printf("%f   %f   %f\n", dd.x, dd.y, dd.z);
+	vec3_plus(&cam->transform.localposition, &dd, &cam->transform.localposition);
+	cam->mouse_prev.x = x; cam->mouse_prev.y = y;
+	cam->is_viewdirty = TRUE;
+}
+
+void camera_onevent(Camera* cam, wog_Event* e, float dt) {
 	if(e == NULL) return ;
 	if (e->type == WOG_EMOUSEWHEEL) {//zoom in\zoom out
-		_onwheelscroll(cam, e->wheel);
+		_onwheelscroll(cam, e->wheel, dt);
+	}
+	else if (e->type == WOG_EMOUSEBUTTONDOWN) {
+		if (!cam->look_around && e->button == WOG_MOUSE_RBUTTON) {
+			cam->look_around = TRUE;
+			cam->mouse_prev.x = e->pos.x; 
+			cam->mouse_prev.y = e->pos.y;
+		}
+		if (!cam->move_around && e->button == WOG_MOUSE_MIDDLE) {
+			cam->move_around = TRUE; 
+			cam->mouse_prev.x = e->pos.x;
+			cam->mouse_prev.y = e->pos.y;
+		}
+	}
+	else if (e->type == WOG_EMOUSEBUTTONUP) {
+		if (e->button == WOG_MOUSE_RBUTTON)
+			cam->look_around = FALSE;
+		if (e->button == WOG_MOUSE_MIDDLE)
+			cam->move_around = FALSE;
 	}
 }
+
+void camera_onupdate(Camera* cam, float dt) {
+	if (cam->look_around)
+		_onlookaround(cam, dt);
+	if (cam->move_around)
+		_onmovearound(cam, dt);
+}
\ No newline at end of file