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interpolate between frozen or lookat direction and current view direction

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This commit is contained in:
mfranz 2007-02-06 16:25:44 +00:00
parent df1bd972f8
commit e034e66c57
1 changed files with 51 additions and 33 deletions
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84
Nasal/dynamic_view.nas
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@ -107,7 +107,7 @@ var ViewManager = {
m.pitch_axis = ViewAxis.new("/sim/current-view/goal-pitch-offset-deg");
m.roll_axis = ViewAxis.new("/sim/current-view/goal-roll-offset-deg");
# accelerations are converted to G (one G is subtracted from z-accel)
# accelerations are converted to G (Earth gravitation is omitted)
m.ax = Input.new("/accelerations/pilot/x-accel-fps_sec", 0.03108095, 0, 0.58, 0);
m.ay = Input.new("/accelerations/pilot/y-accel-fps_sec", 0.03108095, 0, 0.95);
m.az = Input.new("/accelerations/pilot/z-accel-fps_sec", -0.03108095, -1, 0.46);
@ -124,6 +124,14 @@ var ViewManager = {
m.last_heading = m.headingN.getValue();
m.size_factor = getprop("/sim/chase-distance-m") / -25;
# "lookat" blending
m.heading = m.target_heading = 0;
m.pitch = m.target_pitch = 0;
m.roll = m.target_roll = 0;
m.blendN = props.globals.getNode("/sim/view/dynamic/blend", 1);
m.blendN.setDoubleValue(0);
m.frozen = 0;
if (props.globals.getNode("rotors", 0) != nil) {
m.calculate = m.default_helicopter;
} else {
@ -133,7 +141,8 @@ var ViewManager = {
return m;
},
reset : func {
me.lookat_active = 0;
interpolate(me.blendN);
me.blendN.setDoubleValue(0);
me.heading_axis.reset();
me.pitch_axis.reset();
me.roll_axis.reset();
@ -145,39 +154,49 @@ var ViewManager = {
me.roll_axis.add_offset();
},
apply : func {
if (me.elapsedN.getValue() < me.frozen) {
return;
} elsif (me.frozen) {
me.unfreeze();
}
me.pitch = me.pitchN.getValue();
me.roll = me.rollN.getValue();
me.calculate();
if (!me.lookat_active) {
me.heading_axis.apply(me.heading_offset);
me.pitch_axis.apply(me.pitch_offset);
me.roll_axis.apply(me.roll_offset);
var b = me.blendN.getValue();
var B = 1 - b;
me.heading = me.target_heading * b + me.heading_offset * B;
me.pitch = me.target_pitch * b + me.pitch_offset * B;
me.roll = me.target_roll * b + me.roll_offset * B;
me.heading_axis.apply(me.heading);
me.pitch_axis.apply(me.pitch);
me.roll_axis.apply(me.roll);
},
lookat : func(heading = nil, pitch = nil, roll = nil) {
if (heading == nil) {
interpolate(me.blendN, 0, 0.1);
} else {
me.target_heading = heading;
me.target_pitch = pitch;
me.target_roll = roll;
interpolate(me.blendN, 1, 0.1);
}
},
lookat : func(heading = nil, pitch = nil) {
if (heading != nil and pitch != nil) {
if (!me.lookat_active) {
me.save_heading = me.heading_axis.sub_offset();
me.save_pitch = me.pitch_axis.sub_offset();
me.save_roll = me.roll_axis.sub_offset();
}
me.lookat_active = 1;
me.heading_axis.prop.setDoubleValue(heading);
me.pitch_axis.prop.setDoubleValue(pitch);
me.roll_axis.prop.setDoubleValue(0);
} else {
if (me.lookat_active) {
me.heading_axis.prop.setDoubleValue(me.save_heading);
me.pitch_axis.prop.setDoubleValue(me.save_pitch);
me.roll_axis.prop.setDoubleValue(me.save_roll);
me.add_offset();
}
me.lookat_active = 0;
me.heading_axis.apply(me.heading_offset);
me.pitch_axis.apply(me.pitch_offset);
me.roll_axis.apply(me.roll_offset);
freeze : func {
if (!me.frozen) {
me.target_heading = me.heading;
me.target_pitch = me.pitch;
me.target_roll = me.roll;
me.blendN.setDoubleValue(1);
}
me.frozen = me.elapsedN.getValue() + 2;
},
unfreeze : func {
me.frozen = 0;
me.lookat();
},
};
@ -246,7 +265,7 @@ var main_loop = func(id) {
if (cockpit_view and !panel_visible) {
if (mouse_button) {
freeze();
} elsif (elapsedN.getValue() > mouse_freeze) {
} else {
view_manager.apply();
}
}
@ -255,7 +274,7 @@ var main_loop = func(id) {
var freeze = func {
if (mouse_mode == 0) {
mouse_freeze = elapsedN.getValue() + 2;
view_manager.freeze();
}
}
@ -267,8 +286,8 @@ var reset = func {
view_manager.reset();
}
var lookat = func(heading = nil, pitch = nil) {
view_manager.lookat(heading, pitch);
var lookat = func(heading = nil, pitch = nil, roll = nil) {
view_manager.lookat(heading, pitch, roll);
}
@ -282,7 +301,6 @@ var panel_visible = nil; # whether 2D panel is visible
var elapsedN = nil;
var mouse_mode = nil;
var mouse_button = nil;
var mouse_freeze = 0;
var loop_id = 0;