func RenderTexturedRect(cam *Camera, m *v.Matrix4, sizeX, sizeY float32, t *Texture) {
cam.LoadProjection()
cam.LoadModelview(m)
gl.Enable(gl.TEXTURE_2D)
t.tex.Bind(gl.TEXTURE_2D)
gl.Color4ub(255, 255, 255, 255)
gl.Begin(gl.QUADS)
gl.TexCoord2f(0, 1)
gl.Vertex3f(-sizeX, -sizeY, 0)
gl.TexCoord2f(1, 1)
gl.Vertex3f(sizeX, -sizeY, 0)
gl.TexCoord2f(1, 0)
gl.Vertex3f(sizeX, sizeY, 0)
gl.TexCoord2f(0, 0)
gl.Vertex3f(-sizeX, sizeY, 0)
gl.End()
gl.Disable(gl.TEXTURE_2D)
gl.BindTexture(gl.TEXTURE_2D, 0)
}
func RenderLine(camera *Camera, m *v.Matrix4, from, to v.Vector3f, colour Colour) {
camera.LoadProjection()
camera.LoadModelview(m)
gl.Color4ub(colour.R, colour.G, colour.B, colour.A)
gl.Begin(gl.LINES)
gl.Vertex3f(from.X, from.Y, from.Z)
gl.Vertex3f(to.X, to.Y, to.Z)
gl.End()
}
func RenderRect(cam *Camera, m *v.Matrix4, sizeX, sizeY float32, c Colour) {
cam.LoadProjection()
cam.LoadModelview(m)
gl.Color4ub(c.R, c.G, c.B, c.A)
gl.Begin(gl.QUADS)
gl.Vertex3f(-sizeX, -sizeY, 0)
gl.Vertex3f(sizeX, -sizeY, 0)
gl.Vertex3f(sizeX, sizeY, 0)
gl.Vertex3f(-sizeX, sizeY, 0)
gl.End()
}
func RenderWireQuad(camera *Camera, m *v.Matrix4, size float32, colour Colour) {
camera.LoadProjection()
camera.LoadModelview(m)
gl.Color4ub(colour.R, colour.G, colour.B, colour.A)
gl.Begin(gl.LINES)
gl.Vertex3f(-size, -size, 0)
gl.Vertex3f(-size, size, 0)
gl.Vertex3f(-size, size, 0)
gl.Vertex3f(size, size, 0)
gl.Vertex3f(size, size, 0)
gl.Vertex3f(size, -size, 0)
gl.Vertex3f(size, -size, 0)
gl.Vertex3f(-size, -size, 0)
gl.End()
}
func RenderWireRect(cam *Camera, m *v.Matrix4, size_x, size_y float32, colour Colour) {
cam.LoadProjection()
cam.LoadModelview(m)
gl.Color4ub(colour.R, colour.G, colour.B, colour.A)
gl.Begin(gl.LINES)
gl.Vertex3f(-size_x, -size_y, 0)
gl.Vertex3f(-size_x, size_y, 0)
gl.Vertex3f(-size_x, size_y, 0)
gl.Vertex3f(size_x, size_y, 0)
gl.Vertex3f(size_x, size_y, 0)
gl.Vertex3f(size_x, -size_y, 0)
gl.Vertex3f(size_x, -size_y, 0)
gl.Vertex3f(-size_x, -size_y, 0)
gl.End()
gl.Color4ub(255, 255, 255, 255)
}