func (img *glImage) DrawColoredAtXY(x, y int, color [4]float32) {
// TODO have the state knwon globally somewhere so this does not need to be
// called all the time
gl.Enable(gl.TEXTURE_2D)
gl.BindTexture(gl.TEXTURE_2D, img.id)
gl.Begin(gl.QUADS)
gl.Color4f(color[0], color[1], color[2], color[3])
gl.TexCoord2f(img.left, img.top)
gl.Vertex2i(int32(x), int32(y))
gl.Color4f(color[0], color[1], color[2], color[3])
gl.TexCoord2f(img.right, img.top)
gl.Vertex2i(int32(x+img.Width), int32(y))
gl.Color4f(color[0], color[1], color[2], color[3])
gl.TexCoord2f(img.right, img.bottom)
gl.Vertex2i(int32(x+img.Width), int32(y+img.Height))
gl.Color4f(color[0], color[1], color[2], color[3])
gl.TexCoord2f(img.left, img.bottom)
gl.Vertex2i(int32(x), int32(y+img.Height))
gl.End()
}
func drawRoom(room *Room) {
h := float64(room.Box.GetAsBox().Height)
w := float64(room.Box.GetAsBox().Width)
x1 := float64(0 - w*0.5)
y1 := float64(0 - h*0.5)
x2 := float64(0 + w*0.5)
y2 := float64(0 - h*0.5)
x3 := float64(0 + w*0.5)
y3 := float64(0 + h*0.5)
x4 := float64(0 - w*0.5)
y4 := float64(0 + h*0.5)
gl.Begin(gl.POLYGON)
gl.Color4f(
room.Color.X(),
room.Color.Y(),
room.Color.Z(),
room.Color.W(),
)
gl.Vertex2d(x1, y1)
gl.Vertex2d(x2, y2)
gl.Vertex2d(x3, y3)
gl.Vertex2d(x4, y4)
gl.End()
gl.Begin(gl.LINE_LOOP)
gl.Color4f(.3, .3, 1, .9)
gl.LineWidth(1.0)
gl.Vertex2d(x1, y1)
gl.Vertex2d(x2, y2)
gl.Vertex2d(x3, y3)
gl.Vertex2d(x4, y4)
gl.End()
}
func glRect(x, y, w, h, r, g, b, a float32) {
gl.Disable(gl.TEXTURE_2D) // TODO do this once and remember the state
gl.Begin(gl.QUADS)
gl.Color4f(r, g, b, a)
gl.Vertex2f(x, y)
gl.Color4f(r, g, b, a)
gl.Vertex2f(x+w, y)
gl.Color4f(r, g, b, a)
gl.Vertex2f(x+w, y+h)
gl.Color4f(r, g, b, a)
gl.Vertex2f(x, y+h)
gl.End()
}
func (m *menu) draw() {
return // TODO
gl.Disable(gl.TEXTURE_2D)
gl.Begin(gl.QUADS)
gl.Color4f(m.color.r, m.color.g, m.color.b, m.color.a)
gl.Vertex2f(m.pos.x, m.pos.y)
gl.Color4f(m.color.r, m.color.g, m.color.b, m.color.a)
gl.Vertex2f(m.pos.x+m.pos.w, m.pos.y)
gl.Color4f(m.color.r, m.color.g, m.color.b, m.color.a)
gl.Vertex2f(m.pos.x+m.pos.w, m.pos.y+m.pos.h)
gl.Color4f(m.color.r, m.color.g, m.color.b, m.color.a)
gl.Vertex2f(m.pos.x, m.pos.y+m.pos.h)
gl.End()
}
// OpenGL draw function
func draw() {
gl.Clear(gl.COLOR_BUFFER_BIT)
gl.Enable(gl.BLEND)
gl.Enable(gl.POINT_SMOOTH)
gl.Enable(gl.LINE_SMOOTH)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
gl.LoadIdentity()
player := game.Player
//Transform screen.
gl.PushMatrix()
gl.Translatef((1280/2)-float32((player.Body.Position().X)), 0, 0.0)
gl.Begin(gl.LINES)
gl.Color3f(.2, .5, .2)
for _, segment := range game.Level.GetChipmunkSegments() {
x := segment.GetAsSegment().A.X
y := segment.GetAsSegment().A.Y
gl.Vertex3f(float32(x), float32(y), 0)
x = segment.GetAsSegment().B.X
y = segment.GetAsSegment().B.Y
gl.Vertex3f(float32(x), float32(y), 0)
}
gl.End()
gl.Color4f(.9, .1, 1, .9)
// draw balls
for _, enemy := range game.Enemies {
gl.PushMatrix()
pos := enemy.Body.Position()
rot := enemy.Body.Angle() * game.DegreeConst
gl.Translatef(float32(pos.X), float32(pos.Y), 0.0)
gl.Rotatef(float32(rot), 0, 0, 1)
drawCircle(float64(enemy.Radius), 60)
gl.PopMatrix()
}
gl.Color4f(.3, .3, 1, .8)
//Draw Player
gl.PushMatrix()
pos := player.Body.Position()
rot := player.Body.Angle() * game.DegreeConst
gl.Translatef(float32(pos.X), float32(pos.Y), 0.0)
gl.Rotatef(float32(rot), 0, 0, 1)
drawCircle(float64(player.Radius), 60)
gl.PopMatrix()
gl.PopMatrix()
}
// OpenGL draw function
func draw() {
gl.Clear(gl.COLOR_BUFFER_BIT)
gl.Enable(gl.BLEND)
gl.Enable(gl.POINT_SMOOTH)
gl.Enable(gl.LINE_SMOOTH)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
gl.LoadIdentity()
gl.Begin(gl.LINES)
gl.Color3f(.2, .2, .2)
for i := range staticLines {
x := staticLines[i].GetAsSegment().A.X
y := staticLines[i].GetAsSegment().A.Y
gl.Vertex3f(float32(x), float32(y), 0)
x = staticLines[i].GetAsSegment().B.X
y = staticLines[i].GetAsSegment().B.Y
gl.Vertex3f(float32(x), float32(y), 0)
}
gl.End()
gl.Color4f(.3, .3, 1, .8)
// draw balls
for _, ball := range balls {
gl.PushMatrix()
pos := ball.Body.Position()
rot := ball.Body.Angle() * chipmunk.DegreeConst
gl.Translatef(float32(pos.X), float32(pos.Y), 0.0)
gl.Rotatef(float32(rot), 0, 0, 1)
drawCircle(float64(ballRadius), 60)
gl.PopMatrix()
}
}
func draw() {
gl.Clear(gl.COLOR_BUFFER_BIT)
gl.Enable(gl.BLEND)
gl.Enable(gl.POINT_SMOOTH)
gl.Enable(gl.LINE_SMOOTH)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
gl.LoadIdentity()
//Transform screen to keep player in middle. Added intentation to make obvious the push matrix is like a block
gl.PushMatrix()
// gl.Translatef((1280/2)-float32(player.x), 0, 0.0)
// gl.Begin(gl.LINES)
// gl.Color3f(.2, .5, .2)
// for i := range staticLines {
// x := staticLines[i].GetAsSegment().A.X
// y := staticLines[i].GetAsSegment().A.Y
// gl.Vertex3f(float32(x), float32(y), 0)
// x = staticLines[i].GetAsSegment().B.X
// y = staticLines[i].GetAsSegment().B.Y
// gl.Vertex3f(float32(x), float32(y), 0)
// }
// gl.End()
gl.Color4f(player.color_r, player.color_g, player.color_b, player.color_a)
//Draw Player
gl.PushMatrix()
rot := player.rot
pos_x := player.x
pos_y := player.y
gl.Translatef(pos_x, pos_y, 0.0)
gl.Rotatef(float32(rot), 0, 0, 1)
drawCircle(float64(BALL_RADIUS), 20)
gl.PopMatrix()
//Draw the grapple
gl.PushMatrix()
gl.Translatef(player.hook.x_end, player.hook.y_end, 0.0)
drawCircle(float64(5), 5)
gl.PopMatrix()
//Grapple Line
gl.LineWidth(2.5)
gl.Color3f(1.0, 0.0, 0.0)
gl.Begin(gl.LINES)
gl.Vertex3f(player.x, player.y, 0.0)
gl.Vertex3f(player.hook.x_end, player.hook.y_end, 0)
gl.End()
//Second Pop
gl.PopMatrix()
}
func Render() {
gl.ClearColor(0, 0, 0, 1)
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
gl.Color4f(1, 1, 1, 1)
gl.BindTexture(gl.TEXTURE_2D, game.Texture)
gl.PushMatrix()
gl.Translatef(20-float32(game.PlayerX), 15-float32(game.PlayerY), 0)
gl.Begin(gl.TRIANGLES)
for i := 0; i < game.Width; i++ {
for j := 0; j < game.Height; j++ {
renderTile(game.Tiles[(j*game.Width)+i], float32(i), float32(j))
}
}
// Player
gl.Color4f(1, 0, 0, 1)
renderTile(4, float32(game.PlayerX), float32(game.PlayerY))
gl.End()
gl.PopMatrix()
}
func (e *Element) Render() {
gl.Color4f(e.color.R, e.color.G, e.color.B, e.color.A)
gl.Begin(gl.QUADS)
gl.Vertex3f(e.x, e.y, 0)
gl.Vertex3f(e.x, e.y+e.height, 0)
gl.Vertex3f(e.x+e.width, e.y+e.height, 0)
gl.Vertex3f(e.x+e.width, e.y, 0)
gl.End()
}
func (o openGLCanvas) FillRect(what color.Color, where image.Rectangle) {
return //this does not work at all... makes the whole image red
drawX := float32(where.Min.X) * o.scaleX
drawY := float32(where.Min.Y) * o.scaleY
endX := float32(where.Max.X) * o.scaleX
endY := float32(where.Max.Y) * o.scaleY
r, g, b, a := what.RGBA()
gl.Color4f(float32(r)/0xFF, float32(g)/0xFF, float32(b)/0xFF, float32(a)/0xFF)
gl.Begin(gl.QUADS)
{
gl.Vertex3f(drawX, drawY, 0)
gl.Vertex3f(drawX, endX, 0)
gl.Vertex3f(endX, endY, 0)
gl.Vertex3f(endX, drawY, 0)
}
gl.End()
}
func drawScene() {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
gl.MatrixMode(gl.MODELVIEW)
gl.LoadIdentity()
gl.Translatef(0, 0, -3.0)
gl.Rotatef(rotationX, 1, 0, 0)
gl.Rotatef(rotationY, 0, 1, 0)
rotationX += 0.5
rotationY += 0.5
gl.BindTexture(gl.TEXTURE_2D, texture)
gl.Color4f(1, 1, 1, 1)
gl.Begin(gl.QUADS)
gl.Normal3f(0, 0, 1)
gl.TexCoord2f(0, 0)
gl.Vertex3f(-1, -1, 1)
gl.TexCoord2f(1, 0)
gl.Vertex3f(1, -1, 1)
gl.TexCoord2f(1, 1)
gl.Vertex3f(1, 1, 1)
gl.TexCoord2f(0, 1)
gl.Vertex3f(-1, 1, 1)
gl.Normal3f(0, 0, -1)
gl.TexCoord2f(1, 0)
gl.Vertex3f(-1, -1, -1)
gl.TexCoord2f(1, 1)
gl.Vertex3f(-1, 1, -1)
gl.TexCoord2f(0, 1)
gl.Vertex3f(1, 1, -1)
gl.TexCoord2f(0, 0)
gl.Vertex3f(1, -1, -1)
gl.Normal3f(0, 1, 0)
gl.TexCoord2f(0, 1)
gl.Vertex3f(-1, 1, -1)
gl.TexCoord2f(0, 0)
gl.Vertex3f(-1, 1, 1)
gl.TexCoord2f(1, 0)
gl.Vertex3f(1, 1, 1)
gl.TexCoord2f(1, 1)
gl.Vertex3f(1, 1, -1)
gl.Normal3f(0, -1, 0)
gl.TexCoord2f(1, 1)
gl.Vertex3f(-1, -1, -1)
gl.TexCoord2f(0, 1)
gl.Vertex3f(1, -1, -1)
gl.TexCoord2f(0, 0)
gl.Vertex3f(1, -1, 1)
gl.TexCoord2f(1, 0)
gl.Vertex3f(-1, -1, 1)
gl.Normal3f(1, 0, 0)
gl.TexCoord2f(1, 0)
gl.Vertex3f(1, -1, -1)
gl.TexCoord2f(1, 1)
gl.Vertex3f(1, 1, -1)
gl.TexCoord2f(0, 1)
gl.Vertex3f(1, 1, 1)
gl.TexCoord2f(0, 0)
gl.Vertex3f(1, -1, 1)
gl.Normal3f(-1, 0, 0)
gl.TexCoord2f(0, 0)
gl.Vertex3f(-1, -1, -1)
gl.TexCoord2f(1, 0)
gl.Vertex3f(-1, -1, 1)
gl.TexCoord2f(1, 1)
gl.Vertex3f(-1, 1, 1)
gl.TexCoord2f(0, 1)
gl.Vertex3f(-1, 1, -1)
gl.End()
}
func MakeRect(X, Y, Width, Height int32) Rect {
rect := Rect{X, Y, Width, Height, MakeColor(255, 255, 255), NumPropertySet{0, 0, 0, 0}}
x := rect.X
y := rect.Y
width := rect.X2
height := rect.Y2
radius := rect.BorderRadius.LEFT
//TODO edit corner radius builder to use NumPropertySet for each corner
if radius > 0 {
gl.Color4f(1, 0, 0, 0.5)
gl.Begin(gl.QUADS)
gl.Vertex2i(x+radius, y+height) //4
gl.Vertex2i(x+(width-radius), y+height) //5
gl.Vertex2i(x+(width-radius), y) //10
gl.Vertex2i(x+radius, y) //11
gl.End()
gl.Begin(gl.QUADS)
gl.Vertex2i(x, y+radius) //1
gl.Vertex2i(x, y+(height-radius)) //2
gl.Vertex2i(x+radius, y+(height-radius)) //3
gl.Vertex2i(x+radius, y+radius) //12
gl.End()
gl.Begin(gl.QUADS)
gl.Vertex2i(x+(width-radius), y+(height-radius)) //6
gl.Vertex2i(x+width, y+(height-radius)) //7
gl.Vertex2i(x+width, y+radius) //8
gl.Vertex2i(x+(width-radius), y+radius) //9
gl.End()
gl.Begin(gl.TRIANGLE_FAN)
orginx := x
orginy := y
x = orginx + radius
y = orginy + radius
//gl.Translatef(float32(-x), float32(-y), 0)
var triangleAmount = float64(48.0) //# of triangles used to draw circle
//GLfloat radius = 0.8f; //radius
twicePi := float64(0.5) * float64(3.14)
gl.Vertex2f(float32(x), float32(y)) // center of circle
for i := float64(144); i >= triangleAmount+48; i-- {
gl.Vertex2f(float32(float64(x)+(float64(radius)*Cos(i*twicePi/triangleAmount))), float32(float64(y)+(float64(radius)*Sin(i*twicePi/triangleAmount))))
}
gl.End()
y = orginy + height - radius
gl.Begin(gl.TRIANGLE_FAN)
gl.Vertex2f(float32(x), float32(y)) // center of circle
for i := float64(96); i >= triangleAmount; i-- {
gl.Vertex2f(float32(float64(x)+(float64(radius)*Cos(i*twicePi/triangleAmount))), float32(float64(y)+(float64(radius)*Sin(i*twicePi/triangleAmount))))
}
gl.End()
x = orginx + width - radius
gl.Begin(gl.TRIANGLE_FAN)
gl.Vertex2f(float32(x), float32(y)) // center of circle
for i := float64(0); i <= triangleAmount; i++ {
gl.Vertex2f(float32(float64(x)+(float64(radius)*Cos(i*twicePi/triangleAmount))), float32(float64(y)+(float64(radius)*Sin(i*twicePi/triangleAmount))))
}
gl.End()
y = orginy + radius
gl.Begin(gl.TRIANGLE_FAN)
gl.Vertex2f(float32(x), float32(y)) // center of circle
for i := float64(192); i >= triangleAmount+96; i-- {
gl.Vertex2f(float32(float64(x)+(float64(radius)*Cos(i*twicePi/triangleAmount))), float32(float64(y)+(float64(radius)*Sin(i*twicePi/triangleAmount))))
}
gl.End()
} else {
gl.Begin(gl.QUADS)
gl.Vertex2i(x, y)
gl.Vertex2i(x, y+height)
gl.Vertex2i(x+width, y+height)
gl.Vertex2i(x+width, y)
gl.End()
}
// if rect.Stroke.BOTTOM.Width < 1 || rect.Stroke.LEFT.Width < 1 || rect.Stroke.RIGHT.Width < 1 || rect.Stroke.TOP.Width < 1 {
// //BOTTOM
// if rect.Stroke.BOTTOM.Width < 1 {
// gl.Begin(gl.LINE)
// gl.Color4f(float32(float32(rect.Stroke.BOTTOM.Fill.R)*0.0039), float32(float32(rect.Stroke.BOTTOM.Fill.G)*0.0039), float32(float32(rect.Stroke.BOTTOM.Fill.B)*0.0039), float32(float32(rect.Stroke.BOTTOM.Fill.A)*0.0039))
// gl.Vertex2i(x, y+height)
// gl.Vertex2i(x+width, y+height)
// gl.End()
// } else if rect.Stroke.LEFT.Width < 1 {
// gl.Begin(gl.LINE)
// gl.Color4f(float32(float32(rect.Stroke.LEFT.Fill.R)*0.0039), float32(float32(rect.Stroke.LEFT.Fill.G)*0.0039), float32(float32(rect.Stroke.LEFT.Fill.B)*0.0039), float32(float32(rect.Stroke.LEFT.Fill.A)*0.0039))
// gl.Vertex2i(x, y)
// gl.Vertex2i(x, y+height)
// gl.End()
// } else if rect.Stroke.TOP.Width < 1 {
// gl.Begin(gl.LINE)
// gl.Color4f(float32(float32(rect.Stroke.TOP.Fill.R)*0.0039), float32(float32(rect.Stroke.TOP.Fill.G)*0.0039), float32(float32(rect.Stroke.TOP.Fill.B)*0.0039), float32(float32(rect.Stroke.TOP.Fill.A)*0.0039))
// gl.Vertex2i(x, y)
// gl.Vertex2i(x+width, y)
// gl.End()
// } else if rect.Stroke.RIGHT.Width < 1 {
// gl.Begin(gl.LINE)
// gl.Color4f(float32(float32(rect.Stroke.RIGHT.Fill.R)*0.0039), float32(float32(rect.Stroke.RIGHT.Fill.G)*0.0039), float32(float32(rect.Stroke.RIGHT.Fill.B)*0.0039), float32(float32(rect.Stroke.RIGHT.Fill.A)*0.0039))
// gl.Vertex2i(x+width, y)
// gl.Vertex2i(x+width, y+height)
// gl.End()
// }
// //LEFT
// //TOP
// //RIGHT
// gl.Begin(gl.LINES)
// gl.Vertex2i(x, y)
// gl.Vertex2i(x, y+height)
// gl.Vertex2i(x+width, y+height)
// gl.Vertex2i(x+width, y)
// }
return rect
}
func MakeColorRGBA(r, g, b, a byte) Color {
color := Color{r, g, b, a}
gl.Color4f(float32(float32(color.R)*0.0039), float32(float32(color.G)*0.0039), float32(float32(color.B)*0.0039), float32(float32(color.A)*0.0039))
return color
}
func Color(r, g, b byte) XColor {
color := XColor{r, g, b, 255}
gl.Color4f(float32(float32(color.R)*0.0039), float32(float32(color.G)*0.0039), float32(float32(color.B)*0.0039), float32(float32(color.A)*0.0039))
return color
}
// OpenGL draw function
func draw(window *glfw.Window) {
gl.Clear(gl.COLOR_BUFFER_BIT)
gl.Enable(gl.BLEND)
gl.Enable(gl.POINT_SMOOTH)
gl.Enable(gl.LINE_SMOOTH)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
gl.LoadIdentity()
gl.PushMatrix()
gl.Disable(gl.LIGHTING)
width, height := window.GetSize()
x := float64(width)
y := float64(height)
h := 0
gl.Color4f(.1, .1, .1, .8)
gl.LineWidth(1.0)
// x方向
var x0, x1, y0, y1 float64
var deltaX, deltaY float64
d := width / 2
x0 = -x
x1 = -x
y0 = -y
y1 = y
deltaX = ((2 * x) / float64(d))
for i := 0; i < d; i++ {
x0 = x0 + deltaX
gl.Begin(gl.LINES)
gl.Vertex3f(float32(x0), float32(y0), float32(h))
gl.Vertex3f(float32(x0), float32(y1), float32(h))
gl.End()
}
// y方向
x0 = -x
x1 = x
deltaY = ((2 * y) / float64(d))
for i := 0; i < d; i++ {
y0 = y0 + deltaY
gl.Begin(gl.LINES)
gl.Vertex3f(float32(x0), float32(y0), float32(h))
gl.Vertex3f(float32(x1), float32(y0), float32(h))
gl.End()
}
gl.PopMatrix()
// draw boxes
for _, room := range rooms {
gl.PushMatrix()
rot := room.Box.Body.Angle() * chipmunk.DegreeConst
gl.Rotatef(float32(rot), 0, 0, 1.0)
x := roundm(float64(room.Box.Body.Position().X), 4.0)
y := roundm(float64(room.Box.Body.Position().Y), 4.0)
gl.Translated(x, y, 0.0)
drawRoom(room)
gl.PopMatrix()
}
}
